207 lines
5.2 KiB
Plaintext
207 lines
5.2 KiB
Plaintext
####################################
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# SETUP
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####################################
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CREATE DATABASE statements_digest;
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USE statements_digest;
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CREATE TABLE t1(a int);
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CREATE TABLE t2(a int);
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CREATE TABLE t3(a int, b int);
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CREATE TABLE t4(a int, b int);
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CREATE TABLE t5(a int, b int, c int);
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CREATE TABLE t6(a int, b int, c int, d int);
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CREATE TABLE t11 (c CHAR(4));
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CREATE TABLE t12 (c CHAR(4));
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TRUNCATE TABLE performance_schema.events_statements_summary_by_digest;
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####################################
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# EXECUTION
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####################################
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SELECT 1 FROM t1;
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1
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SELECT 1 FROM `t1`;
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1
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SELECT 1,2 FROM t1;
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1 2
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SELECT 1, 2, 3, 4 FROM t1;
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1 2 3 4
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SELECT 1 FROM t2;
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1
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SELECT 1,2 FROM t2;
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1 2
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SELECT 1, 2, 3, 4 FROM t2;
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1 2 3 4
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INSERT INTO t1 VALUES (1);
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INSERT INTO t2 VALUES (1);
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INSERT INTO t3 VALUES (1, 2);
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INSERT INTO t4 VALUES (1, 2);
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INSERT INTO t5 VALUES (1, 2, 3);
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INSERT INTO t1 VALUES (1), (2), (3);
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INSERT INTO t1 VALUES (1), (2), (3), (4);
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INSERT INTO t3 VALUES (1, 2), (3, 4), (5, 6);
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INSERT INTO t5 VALUES (1, 2, 3), (4, 5, 6), (7, 8, 9);
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SELECT * FROM t1 WHERE a IN (1);
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a
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1
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1
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1
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SELECT * FROM t1 WHERE a IN (1, 2, 3);
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a
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1
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1
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2
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3
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1
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2
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3
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INSERT INTO t1 VALUES (NULL);
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INSERT INTO t3 VALUES (NULL,NULL);
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INSERT INTO t3 VALUES (1,NULL);
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INSERT INTO t3 VALUES (NULL,1);
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INSERT INTO t6 VALUES (NULL, NULL, NULL, NULL);
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INSERT INTO t6 VALUES (1, NULL, NULL, NULL);
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INSERT INTO t6 VALUES (NULL, 2, NULL, NULL);
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INSERT INTO t6 VALUES (1, 2, 3, NULL);
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INSERT INTO t6 VALUES (1, 2, NULL, 4);
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SELECT 1 + 1;
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1 + 1
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2
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SELECT 1;
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1
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1
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SELECT 1 /* This is an inline comment */ + 1;
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1 /* This is an inline comment */ + 1
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2
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SELECT 1+
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/*
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this is a
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multiple-line comment
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*/
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1;
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1+
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/*
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this is a
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multiple-line comment
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*/
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1
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2
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CREATE SCHEMA statements_digest_temp;
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DROP SCHEMA statements_digest_temp;
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CREATE DATABASE statements_digest_temp;
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DROP DATABASE statements_digest_temp;
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SELECT 1 FROM no_such_table;
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ERROR 42S02: Table 'statements_digest.no_such_table' doesn't exist
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CREATE TABLE dup_table (c char(4));
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CREATE TABLE dup_table (c char(4));
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ERROR 42S01: Table 'dup_table' already exists
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DROP TABLE dup_table;
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INSERT IGNORE INTO t11 VALUES("MySQL");
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Warnings:
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Warning 1265 Data truncated for column 'c' at row 1
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PREPARE stmt FROM "SELECT * FROM t12";
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EXECUTE stmt;
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c
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EXECUTE stmt;
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c
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DEALLOCATE PREPARE stmt;
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CREATE PROCEDURE p1() BEGIN SELECT * FROM t12; END//
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CALL p1();
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c
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CALL p1();
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c
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DROP PROCEDURE p1;
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CREATE FUNCTION `func`(a INT, b INT) RETURNS int(11) RETURN a+b //
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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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select func(3,4);
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func(3,4)
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7
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select func(13,42);
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func(13,42)
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55
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DROP FUNCTION func;
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CREATE TRIGGER trg BEFORE INSERT ON t12 FOR EACH ROW SET @a:=1;
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INSERT INTO t12 VALUES ("abc");
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INSERT INTO t12 VALUES ("def");
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DROP TRIGGER trg;
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DELETE FROM t1;
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INSERT INTO t1 VALUES (1),(2);
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SELECT * FROM (SELECT a,1,1 FROM t1) AS dt (x,y,z);
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x y z
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1 1 1
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2 1 1
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SELECT * FROM (SELECT a,2,2 FROM t1) AS dt (x,y,z);
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x y z
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1 2 2
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2 2 2
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WITH cte (x,y,z)AS (SELECT a,1,1 FROM t1) SELECT 1, cte.* FROM cte;
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1 x y z
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1 1 1 1
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1 2 1 1
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WITH cte (x,y,z)AS (SELECT a,2,2 FROM t1) SELECT 2, cte.* FROM cte;
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2 x y z
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2 1 2 2
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2 2 2 2
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WITH cte (x,y,z)AS (SELECT a,1,1 FROM t1) SELECT 1, cte.*, cte2.* FROM cte, cte AS cte2;
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1 x y z x y z
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1 2 1 1 1 1 1
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1 1 1 1 1 1 1
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1 2 1 1 2 1 1
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1 1 1 1 2 1 1
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WITH cte (x,y,z)AS (SELECT a,2,2 FROM t1) SELECT 2, cte.*, cte2.* FROM cte, cte AS cte2;
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2 x y z x y z
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2 2 2 2 1 2 2
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2 1 2 2 1 2 2
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2 2 2 2 2 2 2
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2 1 2 2 2 2 2
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WITH RECURSIVE cte (x,y,z) AS
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(SELECT a,1,1 FROM t1 UNION ALL SELECT a+1,a*1,11 FROM t1 WHERE 0)
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SELECT 1, cte.*, cte2.* FROM cte, cte AS cte2;
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1 x y z x y z
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1 2 1 1 1 1 1
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1 1 1 1 1 1 1
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1 2 1 1 2 1 1
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1 1 1 1 2 1 1
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WITH RECURSIVE cte (x,y,z) AS
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(SELECT a,2,2 FROM t1 UNION ALL SELECT a+2,a*2,22 FROM t1 WHERE 0)
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SELECT 2, cte.*, cte2.* FROM cte, cte AS cte2;
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2 x y z x y z
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2 2 2 2 1 2 2
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2 1 2 2 1 2 2
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2 2 2 2 2 2 2
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2 1 2 2 2 2 2
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####################################
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# QUERYING PS STATEMENT DIGEST
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####################################
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SELECT SCHEMA_NAME, DIGEST, DIGEST_TEXT, COUNT_STAR, SUM_ROWS_AFFECTED, SUM_WARNINGS,
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SUM_ERRORS FROM performance_schema.events_statements_summary_by_digest;
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SCHEMA_NAME DIGEST DIGEST_TEXT COUNT_STAR SUM_ROWS_AFFECTED SUM_WARNINGS SUM_ERRORS
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NULL NULL NULL 69 43 2 2
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statements_digest 4e91b9f5348133d42dd06d63880cc54e216216572e93da2b13f150f9aeb1e02c TRUNCATE TABLE `performance_schema` . `events_statements_summary_by_digest` 1 0 0 0
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SHOW GLOBAL VARIABLES LIKE "performance_schema_digests_size";
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Variable_name Value
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performance_schema_digests_size 2
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SELECT COUNT(*) FROM performance_schema.events_statements_summary_by_digest;
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COUNT(*)
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2
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select count(*)
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from performance_schema.events_statements_histogram_by_digest;
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count(*)
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900
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select SCHEMA_NAME, DIGEST IS NULL, BUCKET_NUMBER
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from performance_schema.events_statements_histogram_by_digest
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where BUCKET_NUMBER= 1;
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SCHEMA_NAME DIGEST IS NULL BUCKET_NUMBER
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NULL 1 1
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statements_digest 0 1
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####################################
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# CLEANUP
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####################################
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DROP TABLE IF EXISTS t1;
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DROP TABLE IF EXISTS t2;
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DROP TABLE IF EXISTS t3;
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DROP TABLE IF EXISTS t4;
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DROP TABLE IF EXISTS t5;
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DROP TABLE IF EXISTS t6;
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DROP TABLE IF EXISTS t11;
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DROP TABLE IF EXISTS t12;
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DROP DATABASE IF EXISTS statements_digest;
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