88 lines
3.6 KiB
Plaintext
88 lines
3.6 KiB
Plaintext
CREATE TABLE t1 (id int(11) NOT NULL PRIMARY KEY, name varchar(20),
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INDEX (name)) charset utf8mb4 ENGINE=InnoDB;
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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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CREATE TABLE t2 (id int(11) NOT NULL PRIMARY KEY, fkey int(11),
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FOREIGN KEY (fkey) REFERENCES t2(id)) ENGINE=InnoDB;
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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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Warning 1681 Integer display width is deprecated and will be removed in a future release.
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INSERT INTO t1 VALUES (1,'A1'),(2,'A2'),(3,'B');
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INSERT INTO t2 VALUES (1,1),(2,2),(3,2),(4,3),(5,3);
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ANALYZE TABLE t1;
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ANALYZE TABLE t2;
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EXPLAIN
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SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
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WHERE t1.name LIKE 'A%';
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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 t1 NULL range PRIMARY,name name 83 NULL 2 100.00 Using where; Using index
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1 SIMPLE t2 NULL ref fkey fkey 5 test.t1.id 1 100.00 Using index
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Warnings:
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Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`t2` join `test`.`t1` where ((`test`.`t2`.`fkey` = `test`.`t1`.`id`) and (`test`.`t1`.`name` like 'A%'))
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EXPLAIN
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SELECT COUNT(*) FROM t2 LEFT JOIN t1 ON t2.fkey = t1.id
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WHERE t1.name LIKE 'A%' OR FALSE;
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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 t1 NULL range PRIMARY,name name 83 NULL 2 100.00 Using where; Using index
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1 SIMPLE t2 NULL ref fkey fkey 5 test.t1.id 1 100.00 Using index
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Warnings:
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Note 1003 /* select#1 */ select count(0) AS `COUNT(*)` from `test`.`t2` join `test`.`t1` where ((`test`.`t2`.`fkey` = `test`.`t1`.`id`) and (`test`.`t1`.`name` like 'A%'))
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DROP TABLE t1,t2;
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#
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# BUG#58456: Assertion 0 in QUICK_INDEX_MERGE_SELECT::need_sorted_output
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# in opt_range.h
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#
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CREATE TABLE t1 (
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col_int INT,
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col_int_key INT,
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pk INT NOT NULL,
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PRIMARY KEY (pk),
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KEY col_int_key (col_int_key)
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) ENGINE=XENGINE;
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INSERT INTO t1 VALUES (NULL,1,1), (6,2,2), (5,3,3), (NULL,4,4);
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INSERT INTO t1 VALUES (1,NULL,6), (8,5,7), (NULL,8,8), (8,NULL,5);
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ANALYZE TABLE t1;
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CREATE TABLE t2 (
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pk INT PRIMARY KEY
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) ENGINE=XENGINE;
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EXPLAIN SELECT t1.pk
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FROM t2 LEFT JOIN t1 ON t2.pk = t1.col_int
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WHERE t1.col_int_key BETWEEN 5 AND 6
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AND t1.pk IS NULL OR t1.pk IN (5)
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ORDER BY pk;
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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 t1 NULL const PRIMARY,col_int_key PRIMARY 4 const 1 100.00 Using where
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1 SIMPLE t2 NULL eq_ref PRIMARY PRIMARY 4 test.t1.col_int 1 100.00 Using index
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Warnings:
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Note 1003 /* select#1 */ select `test`.`t1`.`pk` AS `pk` from `test`.`t2` join `test`.`t1` where ((`test`.`t2`.`pk` = `test`.`t1`.`col_int`) and (((`test`.`t1`.`col_int_key` between 5 and 6) and (`test`.`t1`.`pk` is null)) or (`test`.`t1`.`pk` = 5))) order by `test`.`t1`.`pk`
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SELECT t1.pk
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FROM t2 LEFT JOIN t1 ON t2.pk = t1.col_int
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WHERE t1.col_int_key BETWEEN 5 AND 6
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AND t1.pk IS NULL OR t1.pk IN (5)
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ORDER BY pk;
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pk
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DROP TABLE t1,t2;
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# End BUG#58456
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#
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# Bug #20939184:INNODB: UNLOCK ROW COULD NOT FIND A 2 MODE LOCK ON THE
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# RECORD
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#
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CREATE TABLE t1 (c1 INT, c2 INT, c3 INT, PRIMARY KEY (c1,c2) );
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CREATE TABLE t2 (c1 INT, c2 INT, c3 INT, PRIMARY KEY (c1), KEY (c2));
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INSERT INTO t1 VALUES (1,2,3),(2,3,4),(3,4,5);
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INSERT INTO t2 SELECT * FROM t1;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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START TRANSACTION;
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SELECT * FROM t1 LEFT JOIN t2 ON t1.c2=t2.c2 AND t2.c1=1 FOR UPDATE;
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c1 c2 c3 c1 c2 c3
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1 2 3 1 2 3
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2 3 4 NULL NULL NULL
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3 4 5 NULL NULL NULL
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UPDATE t1 LEFT JOIN t2 ON t1.c1 = t2.c2 AND t2.c1 = 3 SET t1.c3 = RAND()*10;
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COMMIT;
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SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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DROP TABLE t1,t2;
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