1712 lines
69 KiB
Plaintext
1712 lines
69 KiB
Plaintext
CREATE TABLE wp(
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FTS_DOC_ID BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
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title VARCHAR(255) NOT NULL DEFAULT '',
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text MEDIUMTEXT NOT NULL,
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dummy INTEGER,
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PRIMARY KEY (FTS_DOC_ID),
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UNIQUE KEY FTS_DOC_ID_INDEX (FTS_DOC_ID),
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FULLTEXT KEY idx (title,text)
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) ENGINE=InnoDB DEFAULT CHARSET=latin1;
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Warnings:
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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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INSERT INTO wp (title, text) VALUES
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('MySQL Tutorial','DBMS stands for MySQL DataBase ...'),
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('How To Use MySQL Well','After you went through a ...'),
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('Optimizing MySQL','In this tutorial we will show ...'),
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('1001 MySQL Tricks','1. Never run mysqld as root. 2. ...'),
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('MySQL vs. YourSQL','In the following database to database comparison ...'),
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('MySQL Security','When configured properly, MySQL ...');
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CREATE TABLE t1 (i INTEGER);
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INSERT INTO t1 SELECT FTS_DOC_ID FROM wp;
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ANALYZE TABLE t1;
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ANALYZE TABLE wp;
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SELECT FTS_DOC_ID, title, MATCH(title, text) AGAINST ('database') AS score1,
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MATCH(title, text) AGAINST ('mysql') AS score2
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FROM wp;
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FTS_DOC_ID title score1 score2
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1 MySQL Tutorial 0.22764469683170319 0.000000003771856604828372
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2 How To Use MySQL Well 0 0.000000001885928302414186
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3 Optimizing MySQL 0 0.000000001885928302414186
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4 1001 MySQL Tricks 0 0.000000001885928302414186
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5 MySQL vs. YourSQL 0.45528939366340637 0.000000001885928302414186
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6 MySQL Security 0 0.000000003771856604828372
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No sorting for this query
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score DESC;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Sort_merge_passes 0
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Sort_range 0
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Sort_rows 0
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Sort_scan 0
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No sorting for this query even if MATCH is part of an expression
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database') > 0.1
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ORDER BY score DESC;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Sort_merge_passes 0
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Sort_range 0
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Sort_rows 0
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Sort_scan 0
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No sorting even if there are several MATCH expressions as long as the
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right one is used in ORDER BY
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score1,
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MATCH(title, text) AGAINST ('mysql') AS score2
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score1 DESC;
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title score1 score2
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MySQL vs. YourSQL 0.45528939366340637 0.000000001885928302414186
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MySQL Tutorial 0.22764469683170319 0.000000003771856604828372
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Sort_merge_passes 0
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Sort_range 0
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Sort_rows 0
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Sort_scan 0
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No Sorting since FT table is first table in query
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp, t1
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WHERE MATCH(title, text) AGAINST ('database') AND FTS_DOC_ID = t1.i
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ORDER BY score DESC;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 0
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Sorting since there is no WHERE clause
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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ORDER BY score DESC;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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How To Use MySQL Well 0
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Optimizing MySQL 0
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1001 MySQL Tricks 0
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MySQL Security 0
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 6
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Sorting since ordering on multiple columns
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score DESC, FTS_DOC_ID;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 2
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Sorting since ordering is not descending
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score ASC;
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title score
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MySQL Tutorial 0.22764469683170319
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MySQL vs. YourSQL 0.45528939366340637
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 2
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Sorting because one is ordering on a different MATCH expression
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('mysql') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score DESC;
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title score
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MySQL Tutorial 0.000000003771856604828372
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MySQL vs. YourSQL 0.000000001885928302414186
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 2
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No sorting for this query
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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ORDER BY score DESC LIMIT 2;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Sort%';
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Variable_name Value
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Sort_merge_passes 0
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Sort_range 0
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Sort_rows 0
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Sort_scan 0
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Revert to table scan and sorting for this query since not
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enough matching rows to satisfy LIMIT clause
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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ORDER BY score DESC LIMIT 3;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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How To Use MySQL Well 0
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SHOW SESSION STATUS LIKE 'Handler_read%';
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Variable_name Value
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Handler_read_first 1
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Handler_read_key 4
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Handler_read_last 0
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Handler_read_next 0
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Handler_read_prev 0
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Handler_read_rnd 3
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Handler_read_rnd_next 7
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 3
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Sorting since no LIMIT clause
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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ORDER BY score DESC;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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How To Use MySQL Well 0
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Optimizing MySQL 0
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1001 MySQL Tricks 0
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MySQL Security 0
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 6
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Sorting since there is a WHERE clause
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FLUSH STATUS;
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SELECT title, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE dummy IS NULL
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ORDER BY score DESC LIMIT 2;
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title score
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MySQL vs. YourSQL 0.45528939366340637
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MySQL Tutorial 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 2
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Sorting since ordering is not on a simple MATCH expressions
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FLUSH STATUS;
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SELECT title, (MATCH(title, text) AGAINST ('database')) * 100 AS score
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FROM wp
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ORDER BY score DESC LIMIT 2;
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title score
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MySQL vs. YourSQL 45.52893936634064
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MySQL Tutorial 22.76446968317032
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SHOW SESSION STATUS LIKE 'Sort_rows%';
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Variable_name Value
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Sort_rows 2
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No ordinary handler accesses when only accessing FTS_DOC_ID and MATCH
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database');
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docid score
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5 0.45528939366340637
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1 0.22764469683170319
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SHOW SESSION STATUS LIKE 'Handler_read%';
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Variable_name Value
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Handler_read_first 0
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Handler_read_key 0
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Handler_read_last 0
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Handler_read_next 0
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Handler_read_prev 0
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Handler_read_rnd 0
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Handler_read_rnd_next 0
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Still no handler accesses when adding FTS_DOC_ID to WHERE clause
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database') AND FTS_DOC_ID > 2;
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docid score
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5 0.45528939366340637
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SHOW SESSION STATUS LIKE 'Handler_read%';
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Variable_name Value
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Handler_read_first 0
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Handler_read_key 0
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Handler_read_last 0
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Handler_read_next 0
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Handler_read_prev 0
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Handler_read_rnd 0
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Handler_read_rnd_next 0
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Still no handler accesses when ordering by MATCH expression
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score;
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docid score
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1 0.22764469683170319
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5 0.45528939366340637
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SHOW SESSION STATUS LIKE 'Handler_read%';
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Variable_name Value
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Handler_read_first 0
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Handler_read_key 2
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Handler_read_last 0
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Handler_read_next 0
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Handler_read_prev 0
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Handler_read_rnd 2
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Handler_read_rnd_next 0
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Optimization is disabled when ordering on FTS_DOC_ID
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY 1 DESC;
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docid score
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5 0.45528939366340637
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1 0.22764469683170319
|
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SHOW SESSION STATUS LIKE 'Handler_read%';
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Variable_name Value
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Handler_read_first 0
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||
Handler_read_key 2
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Handler_read_last 0
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Handler_read_next 0
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Handler_read_prev 0
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Handler_read_rnd 2
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Handler_read_rnd_next 0
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Optimization also work with several MATCH expressions
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score1,
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MATCH(title, text) AGAINST ('mysql') AS score2
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database');
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docid score1 score2
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5 0.45528939366340637 0.000000001885928302414186
|
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1 0.22764469683170319 0.000000003771856604828372
|
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SHOW SESSION STATUS LIKE 'Handler_read%';
|
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Variable_name Value
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||
Handler_read_first 0
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||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
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||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
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Optimization does not apply if sorting on a different MATCH expressions
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from the one used to access the
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score1,
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MATCH(title, text) AGAINST ('mysql') AS score2
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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ORDER BY score2 DESC;
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docid score1 score2
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1 0.22764469683170319 0.000000003771856604828372
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5 0.45528939366340637 0.000000001885928302414186
|
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SHOW SESSION STATUS LIKE 'Handler_read%';
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Variable_name Value
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||
Handler_read_first 0
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||
Handler_read_key 2
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Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
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||
Handler_read_rnd 2
|
||
Handler_read_rnd_next 0
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||
FLUSH STATUS;
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Optimization does not apply for GROUP BY
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SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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WHERE MATCH(title, text) AGAINST ('database')
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GROUP BY score;
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FTS_DOC_ID score
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5 0.45528939366340637
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1 0.22764469683170319
|
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SHOW SESSION STATUS LIKE 'Handler_read%';
|
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Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 3
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No sorting and no table access with LIMIT clause and only information
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from FTS result
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FLUSH STATUS;
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SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
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FROM wp
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ORDER BY score DESC LIMIT 2;
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docid score
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5 0.45528939366340637
|
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1 0.22764469683170319
|
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SHOW STATUS LIKE 'Handler_read%';
|
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Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
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If count optimization applies, EXPLAIN shows
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"Select tables optimized away."
|
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EXPLAIN SELECT COUNT(*)
|
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FROM wp
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WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
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id select_type table partitions type possible_keys key key_len ref rows filtered Extra
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1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
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Warnings:
|
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Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database'))
|
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FLUSH STATUS;
|
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SELECT COUNT(*)
|
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FROM wp
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WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
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COUNT(*)
|
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2
|
||
Verify that there was no table access
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
Optimization applies also to COUNT(expr) as long as expr is not nullable
|
||
EXPLAIN SELECT COUNT(title)
|
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FROM wp
|
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WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(`test`.`wp`.`title`) AS `COUNT(title)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database'))
|
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SELECT COUNT(title)
|
||
FROM wp
|
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WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
||
COUNT(title)
|
||
2
|
||
Optimization does not apply if not a single table query.
|
||
EXPLAIN SELECT count(*)
|
||
FROM wp, t1
|
||
WHERE MATCH(title, text) AGAINST ('database');
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE wp NULL fulltext idx idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using index
|
||
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 6 100.00 NULL
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`wp` join `test`.`t1` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database'))
|
||
SELECT count(*)
|
||
FROM wp, t1
|
||
WHERE MATCH(title, text) AGAINST ('database');
|
||
count(*)
|
||
12
|
||
Optimization does not apply if MATCH is part of an expression
|
||
EXPLAIN SELECT COUNT(title)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE) > 0;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE wp NULL fulltext idx idx 0 const 1 100.00 Using where; Ft_hints: rank > 0
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(`test`.`wp`.`title`) AS `COUNT(title)` from `test`.`wp` where ((match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database')) > 0)
|
||
SELECT COUNT(title)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE) > 0;
|
||
COUNT(title)
|
||
2
|
||
Optimization does not apply if MATCH is part of an expression
|
||
EXPLAIN SELECT COUNT(title)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE) > 0;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE wp NULL fulltext idx idx 0 const 1 100.00 Using where; Ft_hints: rank > 0
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(`test`.`wp`.`title`) AS `COUNT(title)` from `test`.`wp` where ((match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database')) > 0)
|
||
SELECT COUNT(title)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE) > 0;
|
||
COUNT(title)
|
||
2
|
||
Optimization does not apply if COUNT expression is nullable
|
||
EXPLAIN SELECT COUNT(dummy)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE wp NULL fulltext idx idx 0 const 1 100.00 Using where; Ft_hints: no_ranking
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(`test`.`wp`.`dummy`) AS `COUNT(dummy)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database'))
|
||
SELECT COUNT(dummy)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
||
COUNT(dummy)
|
||
0
|
||
FLUSH STATUS;
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('database' WITH QUERY EXPANSION) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('database' WITH QUERY EXPANSION)
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL vs. YourSQL 2.2718474864959717
|
||
MySQL Tutorial 1.6663280725479126
|
||
Optimizing MySQL 0.22764469683170319
|
||
MySQL Security 0.000000003771856604828372
|
||
How To Use MySQL Well 0.000000001885928302414186
|
||
1001 MySQL Tricks 0.000000001885928302414186
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('database' WITH QUERY EXPANSION) AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 2;
|
||
title score
|
||
MySQL vs. YourSQL 2.2718474864959717
|
||
MySQL Tutorial 1.6663280725479126
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid,
|
||
MATCH(title, text) AGAINST ('database' WITH QUERY EXPANSION) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('database');
|
||
docid score
|
||
5 2.2718474864959717
|
||
1 1.6663280725479126
|
||
SHOW SESSION STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid,
|
||
MATCH(title, text) AGAINST ('database' WITH QUERY EXPANSION) AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 2;
|
||
docid score
|
||
5 2.2718474864959717
|
||
1 1.6663280725479126
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
EXPLAIN SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' WITH QUERY EXPANSION);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database' with query expansion))
|
||
FLUSH STATUS;
|
||
SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' WITH QUERY EXPANSION);
|
||
COUNT(*)
|
||
6
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
FLUSH STATUS;
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE)
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL Security 0.000000003771856604828372
|
||
How To Use MySQL Well 0.000000001885928302414186
|
||
Optimizing MySQL 0.000000001885928302414186
|
||
1001 MySQL Tricks 0.000000001885928302414186
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 2;
|
||
title score
|
||
MySQL Security 0.000000003771856604828372
|
||
How To Use MySQL Well 0.000000001885928302414186
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid,
|
||
MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('+MySQL -database');
|
||
docid score
|
||
5 0
|
||
1 0
|
||
6 0.000000003771856604828372
|
||
2 0.000000001885928302414186
|
||
3 0.000000001885928302414186
|
||
4 0.000000001885928302414186
|
||
SHOW SESSION STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid,
|
||
MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 2;
|
||
docid score
|
||
6 0.000000003771856604828372
|
||
2 0.000000001885928302414186
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
EXPLAIN SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('+MySQL -database' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('+MySQL -database' in boolean mode))
|
||
FLUSH STATUS;
|
||
SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('+MySQL -database' IN BOOLEAN MODE);
|
||
COUNT(*)
|
||
4
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
FLUSH STATUS;
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE)
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL Tutorial 0.22764469683170319
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 1;
|
||
title score
|
||
MySQL Tutorial 0.22764469683170319
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid,
|
||
MATCH(title, text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('"MySQL database"@5');
|
||
docid score
|
||
1 0.22764469683170319
|
||
SHOW SESSION STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid,
|
||
MATCH(title, text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 1;
|
||
docid score
|
||
1 0.22764469683170319
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
EXPLAIN SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('"MySQL database"@5' in boolean mode))
|
||
FLUSH STATUS;
|
||
SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE);
|
||
COUNT(*)
|
||
1
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('database') AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('database' WITH QUERY EXPANSION)
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL vs. YourSQL 0.45528939366340637
|
||
MySQL Tutorial 0.22764469683170319
|
||
How To Use MySQL Well 0
|
||
Optimizing MySQL 0
|
||
1001 MySQL Tricks 0
|
||
MySQL Security 0
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('MySQL database' WITH QUERY EXPANSION)
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL Security 0.000000003771856604828372
|
||
How To Use MySQL Well 0.000000001885928302414186
|
||
Optimizing MySQL 0.000000001885928302414186
|
||
1001 MySQL Tricks 0.000000001885928302414186
|
||
MySQL Tutorial 0
|
||
MySQL vs. YourSQL 0
|
||
SELECT title,
|
||
MATCH(title, text) AGAINST ('+MySQL -database' IN BOOLEAN MODE) AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('"MySQL database"@5' IN BOOLEAN MODE)
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL Tutorial 0
|
||
ALTER TABLE wp ENGINE=myisam;
|
||
FLUSH STATUS;
|
||
SELECT title, MATCH(title, text) AGAINST ('database') AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('database')
|
||
ORDER BY score DESC;
|
||
title score
|
||
MySQL vs. YourSQL 0.9562782645225525
|
||
MySQL Tutorial 0.5756555199623108
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 0
|
||
Sort_scan 0
|
||
FLUSH STATUS;
|
||
SELECT title, MATCH(title, text) AGAINST ('database') AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 2;
|
||
title score
|
||
MySQL vs. YourSQL 0.9562782645225525
|
||
MySQL Tutorial 0.5756555199623108
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 2
|
||
Sort_scan 1
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
|
||
FROM wp
|
||
WHERE MATCH(title, text) AGAINST ('database');
|
||
docid score
|
||
5 0.9562782645225525
|
||
1 0.5756555199623108
|
||
SHOW SESSION STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 3
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
FLUSH STATUS;
|
||
SELECT FTS_DOC_ID docid, MATCH(title, text) AGAINST ('database') AS score
|
||
FROM wp
|
||
ORDER BY score DESC LIMIT 2;
|
||
docid score
|
||
5 0.9562782645225525
|
||
1 0.5756555199623108
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 0
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 2
|
||
Handler_read_rnd_next 7
|
||
SHOW SESSION STATUS LIKE 'Sort%';
|
||
Variable_name Value
|
||
Sort_merge_passes 0
|
||
Sort_range 0
|
||
Sort_rows 2
|
||
Sort_scan 1
|
||
EXPLAIN SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE wp NULL fulltext idx idx 0 const 1 100.00 Using where
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`wp` where (match `test`.`wp`.`title`,`test`.`wp`.`text` against ('database'))
|
||
FLUSH STATUS;
|
||
SELECT COUNT(*)
|
||
FROM wp
|
||
WHERE MATCH(title,text) AGAINST ('database' IN NATURAL LANGUAGE MODE);
|
||
COUNT(*)
|
||
2
|
||
SHOW STATUS LIKE 'Handler_read%';
|
||
Variable_name Value
|
||
Handler_read_first 0
|
||
Handler_read_key 0
|
||
Handler_read_last 0
|
||
Handler_read_next 3
|
||
Handler_read_prev 0
|
||
Handler_read_rnd 0
|
||
Handler_read_rnd_next 0
|
||
DROP TABLE wp, t1;
|
||
CREATE TABLE t1
|
||
(
|
||
FTS_DOC_ID BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
|
||
title VARCHAR(255) DEFAULT '',
|
||
text MEDIUMTEXT ,
|
||
PRIMARY KEY (FTS_DOC_ID),
|
||
UNIQUE KEY FTS_DOC_ID_INDEX (FTS_DOC_ID),
|
||
FULLTEXT KEY ft_idx (title,text)
|
||
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
|
||
Warnings:
|
||
Warning 1681 Integer display width is deprecated and will be removed in a future release.
|
||
INSERT INTO t1 (title, text) VALUES
|
||
('MySQL Tutorial','DBMS stands for MySQL DataBase ...'),
|
||
('How To Use MySQL Well','After you went through a ...'),
|
||
('Optimizing MySQL','In this tutorial we will show ...'),
|
||
('1001 MySQL Tricks','1. Never run mysqld as root. 2. ...'),
|
||
('MySQL vs. YourSQL database','In the following database to database comparison ...'),
|
||
('MySQL Security','When configured properly, MySQL ...'),
|
||
('InnoDB', 'InnoDB is a transaction-safe (ACID compliant) storage engine'),
|
||
('MySQL is a database management system', 'A database is a structured collection of data...'),
|
||
('MySQL databases are relational', 'A relational database stores data in separate tables rather than putting all the data in one big storeroom...'),
|
||
('MySQL software is Open Source', 'Open Source means that it is possible for anyone to use and modify the software...'),
|
||
('The MySQL Database Server is very fast, reliable, scalable, and easy to use', 'MySQL Server can run comfortably on a desktop or laptop...'),
|
||
('MySQL Server works in client/server enviornment ......', 'The MySQL Database Software is a client/server system...'),
|
||
('MyISAM', 'MyISAM is based on the older (and no longer available) ISAM storage engine but has many useful extensions'),
|
||
('A large amount of contributed MySQL software is available', 'MySQL Server has a practical set of features developed in close cooperation with our users'),
|
||
(NULL,NULL);
|
||
ANALYZE TABLE t1;
|
||
# No ranking
|
||
EXPLAIN
|
||
SELECT count(*) FROM t1 WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database'))
|
||
SELECT count(*) FROM t1 WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE);
|
||
count(*)
|
||
6
|
||
EXPLAIN
|
||
SELECT count(*) FROM t1 WHERE MATCH (title, text) AGAINST ('data*' IN BOOLEAN MODE) ORDER BY title LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('data*' in boolean mode)) limit 3
|
||
SELECT count(*) FROM t1 WHERE MATCH (title, text) AGAINST ('data*' IN BOOLEAN MODE) ORDER BY title LIMIT 3;
|
||
count(*)
|
||
6
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+fast +database' in boolean mode))
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE);
|
||
FTS_DOC_ID title
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion))
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION);
|
||
FTS_DOC_ID title
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
12 MySQL Server works in client/server enviornment ......
|
||
10 MySQL software is Open Source
|
||
4 1001 MySQL Tricks
|
||
14 A large amount of contributed MySQL software is available
|
||
2 How To Use MySQL Well
|
||
13 MyISAM
|
||
5 MySQL vs. YourSQL database
|
||
8 MySQL is a database management system
|
||
1 MySQL Tutorial
|
||
9 MySQL databases are relational
|
||
6 MySQL Security
|
||
3 Optimizing MySQL
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('"very fast"@3' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('"very fast"@3' in boolean mode))
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('"very fast"@3' IN BOOLEAN MODE);
|
||
FTS_DOC_ID title
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+for' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+for' in boolean mode))
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+for' IN BOOLEAN MODE);
|
||
FTS_DOC_ID
|
||
# No sorting by rank
|
||
EXPLAIN SELECT FTS_DOC_ID, TITLE FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY title;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `TITLE` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) order by `test`.`t1`.`title`
|
||
SELECT FTS_DOC_ID, TITLE FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY title;
|
||
FTS_DOC_ID TITLE
|
||
9 MySQL databases are relational
|
||
8 MySQL is a database management system
|
||
12 MySQL Server works in client/server enviornment ......
|
||
1 MySQL Tutorial
|
||
5 MySQL vs. YourSQL database
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+fast +database' in boolean mode))
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE);
|
||
FTS_DOC_ID
|
||
11
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) ORDER BY title;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) order by `test`.`t1`.`title`
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) ORDER BY title;
|
||
FTS_DOC_ID title
|
||
4 1001 MySQL Tricks
|
||
14 A large amount of contributed MySQL software is available
|
||
2 How To Use MySQL Well
|
||
13 MyISAM
|
||
9 MySQL databases are relational
|
||
8 MySQL is a database management system
|
||
6 MySQL Security
|
||
12 MySQL Server works in client/server enviornment ......
|
||
10 MySQL software is Open Source
|
||
1 MySQL Tutorial
|
||
5 MySQL vs. YourSQL database
|
||
3 Optimizing MySQL
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('"very fast"@3' IN BOOLEAN MODE) ORDER BY title;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('"very fast"@3' in boolean mode)) order by `test`.`t1`.`title`
|
||
SELECT FTS_DOC_ID, title FROM t1 WHERE MATCH(title, text) AGAINST ('"very fast"@3' IN BOOLEAN MODE) ORDER BY title;
|
||
FTS_DOC_ID title
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
# LIMIT optimization
|
||
EXPLAIN SELECT FTS_DOC_ID, TITLE FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, limit = 3
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `TITLE` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) limit 3
|
||
SELECT FTS_DOC_ID, TITLE FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
LIMIT 3;
|
||
FTS_DOC_ID TITLE
|
||
11 The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
5 MySQL vs. YourSQL database
|
||
8 MySQL is a database management system
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE)
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+fast +database' in boolean mode)) limit 3
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE)
|
||
LIMIT 3;
|
||
FTS_DOC_ID
|
||
11
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE)
|
||
ORDER BY title
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+fast +database' in boolean mode)) order by `test`.`t1`.`title` limit 3
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+fast +database' IN BOOLEAN MODE)
|
||
ORDER BY title
|
||
LIMIT 3;
|
||
FTS_DOC_ID
|
||
11
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) ORDER BY title LIMIT 1;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) order by `test`.`t1`.`title` limit 1
|
||
SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) ORDER BY title LIMIT 1;
|
||
FTS_DOC_ID
|
||
4
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ('"very fast"@3' IN BOOLEAN MODE) ORDER BY title LIMIT 1;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('"very fast"@3' in boolean mode)) order by `test`.`t1`.`title` limit 1
|
||
SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ('"very fast"@3' IN BOOLEAN MODE) ORDER BY title LIMIT 1;
|
||
FTS_DOC_ID
|
||
11
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) as `rank`
|
||
FROM t1 WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY `rank`
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) AS `rank` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) order by `rank` limit 3
|
||
SELECT FTS_DOC_ID, MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) as `rank`
|
||
FROM t1 WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY `rank`
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
1 0.15835624933242798
|
||
9 0.15835624933242798
|
||
12 0.15835624933242798
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID, MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) as `rank`
|
||
FROM t1 WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) AS `rank` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) order by `rank` desc limit 3
|
||
SELECT FTS_DOC_ID, MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) as `rank`
|
||
FROM t1 WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
11 1.5415468215942383
|
||
5 0.47506874799728394
|
||
8 0.31671249866485596
|
||
EXPLAIN SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext NULL ft_idx 262 NULL 15 100.00 Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) AS `rank` from `test`.`t1` order by `rank` desc limit 3
|
||
SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
5 0.47506874799728394
|
||
8 0.31671249866485596
|
||
1 0.15835624933242798
|
||
EXPLAIN SELECT FTS_DOC_ID, MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) as `rank`
|
||
FROM t1
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext NULL ft_idx 262 NULL 15 100.00 Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) AS `rank` from `test`.`t1` order by `rank` desc limit 3
|
||
SELECT FTS_DOC_ID, MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) as `rank`
|
||
FROM t1
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
11 1.5415468215942383
|
||
5 0.47506874799728394
|
||
8 0.31671249866485596
|
||
EXPLAIN SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE)
|
||
ORDER BY MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) AS `rank` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) desc limit 3
|
||
SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE)
|
||
ORDER BY MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
5 0.47506874799728394
|
||
8 0.31671249866485596
|
||
1 0.15835624933242798
|
||
EXPLAIN SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) and FTS_DOC_ID > 1
|
||
ORDER BY MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext PRIMARY,FTS_DOC_ID_INDEX,ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) AS `rank` from `test`.`t1` where ((match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) and (`test`.`t1`.`FTS_DOC_ID` > 1)) order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) desc limit 3
|
||
SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) and FTS_DOC_ID > 1
|
||
ORDER BY MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
5 0.47506874799728394
|
||
8 0.31671249866485596
|
||
9 0.15835624933242798
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID,MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
ORDER BY `rank`
|
||
LIMIT 1;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) AS `rank` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) order by `rank` limit 1
|
||
SELECT FTS_DOC_ID,MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
ORDER BY `rank`
|
||
LIMIT 1;
|
||
FTS_DOC_ID rank
|
||
3 0.009391550906002522
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID,MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
ORDER BY `rank` DESC
|
||
LIMIT 1;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, limit = 1; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) AS `rank` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) order by `rank` desc limit 1
|
||
SELECT FTS_DOC_ID,MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
ORDER BY `rank` DESC
|
||
LIMIT 1;
|
||
FTS_DOC_ID rank
|
||
11 15.345823287963867
|
||
EXPLAIN
|
||
SELECT FTS_DOC_ID,MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
ORDER BY MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
LIMIT 1;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) AS `rank` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+very +fast' with query expansion)) limit 1
|
||
SELECT FTS_DOC_ID,MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) as `rank`
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION)
|
||
ORDER BY MATCH(title, text) AGAINST ('+very +fast' WITH QUERY EXPANSION) DESC
|
||
LIMIT 1;
|
||
FTS_DOC_ID rank
|
||
11 15.345823287963867
|
||
# WHERE optimization on MATCH > 'some_rank'
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) > 0.1;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, rank > 0.1; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where ((match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) > 0.1)
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) > 0.1;
|
||
FTS_DOC_ID
|
||
11
|
||
5
|
||
8
|
||
1
|
||
9
|
||
12
|
||
# additional test for correct behaviour
|
||
EXPLAIN SELECT * FROM t1 ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC LIMIT 10;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL ALL NULL NULL NULL NULL 15 100.00 Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title`,`test`.`t1`.`text` AS `text` from `test`.`t1` order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) desc limit 10
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) AND
|
||
MATCH (title, text) AGAINST ('mysql' IN NATURAL LANGUAGE MODE)
|
||
LIMIT 6;
|
||
FTS_DOC_ID
|
||
11
|
||
5
|
||
8
|
||
1
|
||
9
|
||
12
|
||
# test OR condition
|
||
SELECT FTS_DOC_ID
|
||
FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('database')
|
||
OR MATCH(title, text) AGAINST ('mysql')
|
||
ORDER BY MATCH(title, text) AGAINST ('database') DESC;
|
||
FTS_DOC_ID
|
||
5
|
||
8
|
||
1
|
||
9
|
||
11
|
||
12
|
||
2
|
||
3
|
||
4
|
||
6
|
||
10
|
||
14
|
||
EXPLAIN SELECT FTS_DOC_ID
|
||
FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('database')
|
||
OR MATCH(title, text) AGAINST ('mysql')
|
||
ORDER BY MATCH(title, text) AGAINST ('database') DESC;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL index NULL FTS_DOC_ID_INDEX 8 NULL 15 20.99 Using where; Using index; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where ((match `test`.`t1`.`title`,`test`.`t1`.`text` against ('database')) or (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('mysql'))) order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('database')) desc
|
||
# MATCH and GROUP BY, DISTINCT
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
GROUP BY FTS_DOC_ID
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext PRIMARY,FTS_DOC_ID_INDEX,ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) group by `test`.`t1`.`FTS_DOC_ID` order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) desc limit 3
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
GROUP BY FTS_DOC_ID
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID
|
||
11
|
||
5
|
||
8
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
GROUP BY title
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using temporary; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) group by `test`.`t1`.`title` order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) desc limit 3
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
GROUP BY title
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID
|
||
11
|
||
5
|
||
8
|
||
EXPLAIN SELECT MAX(FTS_DOC_ID) FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select max(`test`.`t1`.`FTS_DOC_ID`) AS `MAX(FTS_DOC_ID)` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) limit 3
|
||
SELECT MAX(FTS_DOC_ID) FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
MAX(FTS_DOC_ID)
|
||
12
|
||
EXPLAIN SELECT DISTINCT(title) FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using temporary; Using filesort
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select distinct `test`.`t1`.`title` AS `title` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) desc limit 3
|
||
SELECT DISTINCT(title) FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
title
|
||
The MySQL Database Server is very fast, reliable, scalable, and easy to use
|
||
MySQL vs. YourSQL database
|
||
MySQL is a database management system
|
||
EXPLAIN SELECT DISTINCT(FTS_DOC_ID) FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext PRIMARY,FTS_DOC_ID_INDEX,ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select distinct `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) order by (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('fast database')) desc limit 3
|
||
SELECT DISTINCT(FTS_DOC_ID) FROM t1
|
||
WHERE MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE)
|
||
ORDER BY MATCH (title, text) AGAINST ('fast database' IN NATURAL LANGUAGE MODE) DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID
|
||
11
|
||
5
|
||
8
|
||
# FTS index access
|
||
SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
FTS_DOC_ID rank
|
||
5 0.47506874799728394
|
||
8 0.31671249866485596
|
||
1 0.15835624933242798
|
||
EXPLAIN SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) as `rank`
|
||
FROM t1
|
||
ORDER BY `rank` DESC
|
||
LIMIT 3;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext NULL ft_idx 262 NULL 15 100.00 Ft_hints: sorted, limit = 3; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) AS `rank` from `test`.`t1` order by `rank` desc limit 3
|
||
SELECT a.FTS_DOC_ID, b.FTS_DOC_ID
|
||
FROM t1 a, t1 b
|
||
WHERE MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE) and
|
||
MATCH(b.title, b.text) AGAINST ('+mysql' IN BOOLEAN MODE) and
|
||
a.FTS_DOC_ID = b.FTS_DOC_ID;
|
||
FTS_DOC_ID FTS_DOC_ID
|
||
5 5
|
||
8 8
|
||
1 1
|
||
9 9
|
||
11 11
|
||
12 12
|
||
EXPLAIN SELECT a.FTS_DOC_ID, b.FTS_DOC_ID
|
||
FROM t1 a, t1 b
|
||
WHERE MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE) and
|
||
MATCH(b.title, b.text) AGAINST ('+mysql' IN BOOLEAN MODE) and
|
||
a.FTS_DOC_ID = b.FTS_DOC_ID;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE a NULL fulltext PRIMARY,FTS_DOC_ID_INDEX,ft_idx ft_idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using index
|
||
1 SIMPLE b NULL eq_ref PRIMARY,FTS_DOC_ID_INDEX,ft_idx PRIMARY 8 test.a.FTS_DOC_ID 1 11.11 Using where; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`a`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`b`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` `a` join `test`.`t1` `b` where ((`test`.`b`.`FTS_DOC_ID` = `test`.`a`.`FTS_DOC_ID`) and (match `test`.`a`.`title`,`test`.`a`.`text` against ('+database' in boolean mode)) and (match `test`.`b`.`title`,`test`.`b`.`text` against ('+mysql' in boolean mode)))
|
||
SELECT a.FTS_DOC_ID, MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE),
|
||
b.FTS_DOC_ID, MATCH(b.title, b.text) AGAINST ('+database' IN BOOLEAN MODE)
|
||
FROM t1 a, t1 b
|
||
WHERE MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE) and
|
||
MATCH(b.title, b.text) AGAINST ('+database' IN BOOLEAN MODE);
|
||
FTS_DOC_ID MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE) FTS_DOC_ID MATCH(b.title, b.text) AGAINST ('+database' IN BOOLEAN MODE)
|
||
5 0.47506874799728394 5 0.47506874799728394
|
||
5 0.47506874799728394 8 0.31671249866485596
|
||
5 0.47506874799728394 1 0.15835624933242798
|
||
5 0.47506874799728394 9 0.15835624933242798
|
||
5 0.47506874799728394 11 0.15835624933242798
|
||
5 0.47506874799728394 12 0.15835624933242798
|
||
8 0.31671249866485596 5 0.47506874799728394
|
||
8 0.31671249866485596 8 0.31671249866485596
|
||
8 0.31671249866485596 1 0.15835624933242798
|
||
8 0.31671249866485596 9 0.15835624933242798
|
||
8 0.31671249866485596 11 0.15835624933242798
|
||
8 0.31671249866485596 12 0.15835624933242798
|
||
1 0.15835624933242798 5 0.47506874799728394
|
||
1 0.15835624933242798 8 0.31671249866485596
|
||
1 0.15835624933242798 1 0.15835624933242798
|
||
1 0.15835624933242798 9 0.15835624933242798
|
||
1 0.15835624933242798 11 0.15835624933242798
|
||
1 0.15835624933242798 12 0.15835624933242798
|
||
9 0.15835624933242798 5 0.47506874799728394
|
||
9 0.15835624933242798 8 0.31671249866485596
|
||
9 0.15835624933242798 1 0.15835624933242798
|
||
9 0.15835624933242798 9 0.15835624933242798
|
||
9 0.15835624933242798 11 0.15835624933242798
|
||
9 0.15835624933242798 12 0.15835624933242798
|
||
11 0.15835624933242798 5 0.47506874799728394
|
||
11 0.15835624933242798 8 0.31671249866485596
|
||
11 0.15835624933242798 1 0.15835624933242798
|
||
11 0.15835624933242798 9 0.15835624933242798
|
||
11 0.15835624933242798 11 0.15835624933242798
|
||
11 0.15835624933242798 12 0.15835624933242798
|
||
12 0.15835624933242798 5 0.47506874799728394
|
||
12 0.15835624933242798 8 0.31671249866485596
|
||
12 0.15835624933242798 1 0.15835624933242798
|
||
12 0.15835624933242798 9 0.15835624933242798
|
||
12 0.15835624933242798 11 0.15835624933242798
|
||
12 0.15835624933242798 12 0.15835624933242798
|
||
EXPLAIN SELECT a.FTS_DOC_ID, MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE),
|
||
b.FTS_DOC_ID, MATCH(b.title, b.text) AGAINST ('+database' IN BOOLEAN MODE)
|
||
FROM t1 a, t1 b
|
||
WHERE MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE) and
|
||
MATCH(b.title, b.text) AGAINST ('+database' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE a NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using index
|
||
1 SIMPLE b NULL fulltext ft_idx ft_idx 0 const 1 100.00 Using where; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`a`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`a`.`title`,`test`.`a`.`text` against ('+database' in boolean mode)) AS `MATCH(a.title, a.text) AGAINST ('+database' IN BOOLEAN MODE)`,`test`.`b`.`FTS_DOC_ID` AS `FTS_DOC_ID`,(match `test`.`b`.`title`,`test`.`b`.`text` against ('+database' in boolean mode)) AS `MATCH(b.title, b.text) AGAINST ('+database' IN BOOLEAN MODE)` from `test`.`t1` `a` join `test`.`t1` `b` where ((match `test`.`a`.`title`,`test`.`a`.`text` against ('+database' in boolean mode)) and (match `test`.`b`.`title`,`test`.`b`.`text` against ('+database' in boolean mode)))
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ("data*" IN BOOLEAN MODE) * 100;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL index NULL FTS_DOC_ID_INDEX 8 NULL 15 100.00 Using where; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (0 <> ((match `test`.`t1`.`title`,`test`.`t1`.`text` against ('data*' in boolean mode)) * 100))
|
||
SELECT FTS_DOC_ID, MATCH(title, text) AGAINST ("data*" IN BOOLEAN MODE) * 100
|
||
FROM t1 WHERE MATCH(title, text) AGAINST ("data*" IN BOOLEAN MODE) * 100;
|
||
FTS_DOC_ID MATCH(title, text) AGAINST ("data*" IN BOOLEAN MODE) * 100
|
||
1 4.92168664932251
|
||
5 14.76505994796753
|
||
8 9.84337329864502
|
||
9 4.92168664932251
|
||
11 4.92168664932251
|
||
12 4.92168664932251
|
||
SELECT * FROM t1 WHERE title IS NULL AND text IS NULL;
|
||
FTS_DOC_ID title text
|
||
15 NULL NULL
|
||
CREATE TABLE t2 SELECT FTS_DOC_ID as doc_id, title, text FROM t1;
|
||
ALTER TABLE t2 ADD PRIMARY KEY (doc_id);
|
||
ALTER TABLE t2 ADD FULLTEXT KEY ft_idx (title,text);
|
||
Warnings:
|
||
Warning 124 InnoDB rebuilding table to add column FTS_DOC_ID
|
||
ANALYZE TABLE t2;
|
||
EXPLAIN SELECT DOC_ID FROM t2 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) * 100;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t2 NULL ALL NULL NULL NULL NULL 15 100.00 Using where
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t2`.`doc_id` AS `DOC_ID` from `test`.`t2` where (0 <> ((match `test`.`t2`.`title`,`test`.`t2`.`text` against ('+database' in boolean mode)) * 100))
|
||
SELECT DOC_ID FROM t2 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) * 100;
|
||
DOC_ID
|
||
1
|
||
5
|
||
8
|
||
9
|
||
11
|
||
12
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) * 100;
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL index NULL FTS_DOC_ID_INDEX 8 NULL 15 100.00 Using where; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (0 <> ((match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+database' in boolean mode)) * 100))
|
||
SELECT FTS_DOC_ID FROM t1 WHERE MATCH(title, text) AGAINST ('+database' IN BOOLEAN MODE) * 100;
|
||
FTS_DOC_ID
|
||
1
|
||
5
|
||
8
|
||
9
|
||
11
|
||
12
|
||
DROP TABLE t1, t2;
|
||
"Check hints with uft8 charset for 2 cases"
|
||
SET NAMES utf8mb4;
|
||
CREATE TABLE t1 (
|
||
FTS_DOC_ID BIGINT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
|
||
title VARCHAR(200),
|
||
text TEXT
|
||
) CHARACTER SET = utf8, ENGINE=InnoDB;
|
||
Warnings:
|
||
Warning 3719 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
|
||
INSERT INTO t1 (title, text) VALUES
|
||
('Я могу есть стекло', 'оно мне не вредит'),
|
||
('Мога да ям стъкло', 'то не ми вреди'),
|
||
('Μπορῶ νὰ φάω σπασμένα' ,'γυαλιὰ χωρὶς νὰ πάθω τίποτα'),
|
||
('Příliš žluťoučký kůň', 'úpěl ďábelské kódy'),
|
||
('Sævör grét', 'áðan því úlpan var ónýt'),
|
||
('うゐのおくやま','けふこえて'),
|
||
('いろはにほへど ちりぬる','あさきゆめみじ ゑひもせず');
|
||
CREATE FULLTEXT INDEX idx on t1 (title, text);
|
||
# No ranking
|
||
EXPLAIN
|
||
SELECT count(*) FROM t1 WHERE MATCH (title, text) AGAINST ('вредит' IN NATURAL LANGUAGE MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL NULL Select tables optimized away
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select count(0) AS `count(*)` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('вредит'))
|
||
SELECT count(*) FROM t1 WHERE MATCH (title, text) AGAINST ('вредит' IN NATURAL LANGUAGE MODE);
|
||
count(*)
|
||
1
|
||
EXPLAIN
|
||
SELECT * FROM t1 WHERE MATCH(title, text) AGAINST ("оно" WITH QUERY EXPANSION);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext idx idx 0 const 1 100.00 Using where; Ft_hints: sorted
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID`,`test`.`t1`.`title` AS `title`,`test`.`t1`.`text` AS `text` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('оно' with query expansion))
|
||
SELECT * FROM t1 WHERE MATCH(title, text) AGAINST ("оно" WITH QUERY EXPANSION);
|
||
FTS_DOC_ID title text
|
||
1 Я могу есть стекло оно мне не вредит
|
||
# No sorting by rank
|
||
EXPLAIN SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+(Мога τίποτα)' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext idx idx 0 const 1 100.00 Using where; Ft_hints: no_ranking; Using index
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select `test`.`t1`.`FTS_DOC_ID` AS `FTS_DOC_ID` from `test`.`t1` where (match `test`.`t1`.`title`,`test`.`t1`.`text` against ('+(Мога τίποτα)' in boolean mode))
|
||
SELECT FTS_DOC_ID FROM t1
|
||
WHERE MATCH(title, text) AGAINST ('+(Мога τίποτα)' IN BOOLEAN MODE);
|
||
FTS_DOC_ID
|
||
2
|
||
3
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug #18924341 CRASH IN TEST_IF_SKIP_SORT_ORDER, GROUP BY MATCH AGAINST DESC
|
||
#
|
||
CREATE TABLE t1 (f1 CHAR(1), FULLTEXT KEY (f1));
|
||
SELECT 1 FROM t1 NATURAL JOIN t1 a GROUP BY MATCH(t1.f1) AGAINST ("1")
|
||
ORDER BY MATCH(t1.f1) AGAINST ("1") DESC;
|
||
1
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#20261601 ASSERTION FAILED: !FIRST_QEP_TAB->TABLE()->NO_KEYREAD
|
||
#
|
||
CREATE TABLE t1(a INT PRIMARY KEY);
|
||
INSERT INTO t1 VALUES(1),(2);
|
||
SELECT (SELECT MATCH(`a`)AGAINST('1') FROM t1) FROM t1;
|
||
ERROR HY000: Can't find FULLTEXT index matching the column list
|
||
SELECT 1, a IN (SELECT a FROM t1) FROM t1;
|
||
1 a IN (SELECT a FROM t1)
|
||
1 1
|
||
1 1
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#20442572 ASSERTION `!FIRST_QEP_TAB->TABLE()->NO_KEYREAD' FAILED.
|
||
# Bug#75688 Assertion `!first_qep_tab->table()->no_keyread' failed.
|
||
#
|
||
CREATE TABLE t1(a INT,b POINT NOT NULL,KEY(a));
|
||
HANDLER t1 OPEN;
|
||
select * from t1 where MATCH a,b AGAINST('"Now sUPPort"' IN BOOLEAN MODE);
|
||
ERROR HY000: Can't find FULLTEXT index matching the column list
|
||
prepare stmt1 from "truncate t1";
|
||
SELECT a IN(SELECT a FROM t1)FROM t1;
|
||
a IN(SELECT a FROM t1)
|
||
deallocate prepare stmt1;
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug #20685427 INVALID WRITE OF FREED MEMORY IN ITEM_FUNC_MATCH::CLEANUP
|
||
#
|
||
CREATE TABLE t1(a TEXT CHARSET LATIN1, FULLTEXT KEY(a)) ENGINE=INNODB;
|
||
SELECT MATCH(a) AGAINST ('') FROM (SELECT a FROM t1 LIMIT 1) q;
|
||
ERROR HY000: The used table type doesn't support FULLTEXT indexes
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#21140067 EXPLAIN .. MATCH AGAINST: ASSERTION FAILED: TO <= END
|
||
#
|
||
CREATE TABLE t1(f1 CHAR(1) CHARSET latin1, FULLTEXT(f1)) ENGINE=INNODB;
|
||
EXPLAIN SELECT 1 FROM t1 WHERE 1.238585e+308 <= MATCH(f1) AGAINST ('1' IN BOOLEAN MODE);
|
||
id select_type table partitions type possible_keys key key_len ref rows filtered Extra
|
||
1 SIMPLE t1 NULL fulltext f1 f1 0 const 1 100.00 Using where; Ft_hints: rank >= 1e+308
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select 1 AS `1` from `test`.`t1` where (1.238585e+308 <= (match `test`.`t1`.`f1` against ('1' in boolean mode)))
|
||
EXPLAIN FORMAT = JSON SELECT 1 FROM t1 WHERE 1.238585e+308 <= MATCH(f1) AGAINST ('1' IN BOOLEAN MODE);
|
||
EXPLAIN
|
||
{
|
||
"query_block": {
|
||
"select_id": 1,
|
||
"cost_info": {
|
||
"query_cost": "0.35"
|
||
},
|
||
"table": {
|
||
"table_name": "t1",
|
||
"access_type": "fulltext",
|
||
"possible_keys": [
|
||
"f1"
|
||
],
|
||
"key": "f1",
|
||
"used_key_parts": [
|
||
"f1"
|
||
],
|
||
"key_length": "0",
|
||
"ref": [
|
||
"const"
|
||
],
|
||
"rows_examined_per_scan": 1,
|
||
"rows_produced_per_join": 1,
|
||
"filtered": "100.00",
|
||
"ft_hints": "rank >= 1e+308",
|
||
"cost_info": {
|
||
"read_cost": "0.25",
|
||
"eval_cost": "0.10",
|
||
"prefix_cost": "0.35",
|
||
"data_read_per_join": "8"
|
||
},
|
||
"used_columns": [
|
||
"f1"
|
||
],
|
||
"attached_condition": "(1.238585e+308 <= (match `test`.`t1`.`f1` against ('1' in boolean mode)))"
|
||
}
|
||
}
|
||
}
|
||
Warnings:
|
||
Note 1003 /* select#1 */ select 1 AS `1` from `test`.`t1` where (1.238585e+308 <= (match `test`.`t1`.`f1` against ('1' in boolean mode)))
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#21140088 MATCH AGAINST: ASSERTION FAILED: !TABLE || (!TABLE->READ_SET || BITMAP_IS_SET
|
||
#
|
||
SET sql_mode='';
|
||
CREATE TABLE t1(a INT) ENGINE=INNODB;
|
||
CREATE TABLE t2(b TEXT CHARSET LATIN1, FULLTEXT(b), PRIMARY KEY(b(10))) ENGINE=INNODB;
|
||
INSERT INTO t2 VALUES ('a'),('b');
|
||
SELECT NOT EXISTS (SELECT MATCH(b) AGAINST ('1') FROM t1) FROM t2 GROUP BY "a";
|
||
ERROR HY000: Incorrect arguments to MATCH
|
||
DROP TABLE t1, t2;
|
||
CREATE TABLE t1(a INT) ENGINE=MyISAM;
|
||
CREATE TABLE t2(b TEXT CHARSET LATIN1, FULLTEXT(b), PRIMARY KEY(b(10))) ENGINE=MyISAM;
|
||
INSERT INTO t2 VALUES ('a'),('b');
|
||
SELECT NOT EXISTS (SELECT MATCH(b) AGAINST ('1' in BOOLEAN MODE) FROM t1) FROM t2 GROUP BY "a";
|
||
ERROR HY000: Incorrect arguments to MATCH
|
||
DROP TABLE t1, t2;
|
||
SET sql_mode=default;
|
||
#
|
||
# Bug#21140039 ASSERTION FAILED: !FIRST_QEP_TAB->TABLE()->NO_KEYREAD MATCH AGAINST.....
|
||
#
|
||
CREATE TABLE t1
|
||
(
|
||
a INT,
|
||
b INT,
|
||
c CHAR(1) CHARSET latin1,
|
||
PRIMARY KEY (b,a),
|
||
FULLTEXT KEY (c)
|
||
) ENGINE=INNODB;
|
||
SELECT "a" NOT IN(SELECT b FROM t1 WHERE MATCH(c) AGAINST ('a' IN BOOLEAN MODE));
|
||
"a" NOT IN(SELECT b FROM t1 WHERE MATCH(c) AGAINST ('a' IN BOOLEAN MODE))
|
||
1
|
||
DROP TABLE t1;
|
||
#
|
||
# Bug#21300774 ASSERT `!INIT_FTFUNCS(THD, SELECT_LEX)` IN JOIN::RESET AT SQL/SQL_SELECT.CC:874
|
||
#
|
||
CREATE TABLE t1 (f1 INT);
|
||
INSERT INTO t1 VALUES (1);
|
||
INSERT INTO t1 VALUES (2);
|
||
CREATE TABLE t2 (ft TEXT, FULLTEXT KEY ft(ft));
|
||
INSERT INTO t2 VALUES ('abc');
|
||
INSERT INTO t2 VALUES ('def');
|
||
UPDATE t1 SET f1 =
|
||
(SELECT t1.f1 FROM t2 WHERE NOT TRUE AND
|
||
MATCH (ft) AGAINST ((SELECT 'xyz' FROM t2)));
|
||
ERROR 21000: Subquery returns more than 1 row
|
||
DROP TABLE t1, t2;
|
||
#
|
||
# Bug#22679209: FULL-TEXT QUERIES WITH ADDITIONAL SECONDARY INDEX
|
||
# GIVES NULL OR ZERO ROWS
|
||
#
|
||
CREATE TABLE t1 (
|
||
f1 INTEGER,
|
||
title varchar(255),
|
||
body mediumtext,
|
||
KEY f1 (f1),
|
||
FULLTEXT KEY title (title),
|
||
FULLTEXT KEY body (body)
|
||
) ENGINE=InnoDB;
|
||
INSERT INTO t1 VALUES
|
||
(1, 'Insert into table', 'insert into table select from'),
|
||
(1, 'Delete from table', 'insert into table select from'),
|
||
(1, 'Update', 'perform update'),
|
||
(2, 'Insert into table', 'insert into table select from'),
|
||
( 2, 'Delete from table', 'some body text here'),
|
||
( 2, 'Update', 'perform update'),
|
||
( 3, 'Insert into table', 'insert into table select from'),
|
||
( 3, 'Delete from table', 'some body text here');
|
||
SELECT f1 FROM t1 WHERE f1=1 AND
|
||
(MATCH (title) AGAINST ('table' IN BOOLEAN MODE) OR
|
||
MATCH (body) AGAINST ('table' IN BOOLEAN MODE));
|
||
f1
|
||
1
|
||
1
|
||
DROP TABLE t1;
|
||
# End of test for Bug#22679209
|