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				https://github.com/MariaDB/server.git
				synced 2025-11-03 14:33:32 +03:00 
			
		
		
		
	
		
			
				
	
	
		
			223 lines
		
	
	
		
			5.1 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
			
		
		
	
	
			223 lines
		
	
	
		
			5.1 KiB
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
SET SESSION STORAGE_ENGINE = InnoDB;
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drop table if exists t1,t2,t3;
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flush status;
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set autocommit=0;
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create table t1 (a int not null);
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insert into t1 values (1),(2),(3);
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select * from t1;
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a
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1
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2
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3
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	0
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drop table t1;
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commit;
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set autocommit=1;
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begin;
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create table t1 (a int not null);
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insert into t1 values (1),(2),(3);
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select * from t1;
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a
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1
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2
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3
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	1
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drop table t1;
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commit;
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create table t1 (a int not null);
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create table t2 (a int not null);
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create table t3 (a int not null);
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insert into t1 values (1),(2);
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insert into t2 values (1),(2);
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insert into t3 values (1),(2);
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select * from t1;
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a
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1
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2
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select * from t2;
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a
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1
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2
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select * from t3;
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a
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1
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2
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	3
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show status like "Qcache_hits";
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Variable_name	Value
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Qcache_hits	0
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begin;
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select * from t1;
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a
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1
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2
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select * from t2;
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a
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1
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2
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select * from t3;
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a
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1
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2
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	6
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show status like "Qcache_hits";
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Variable_name	Value
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Qcache_hits	0
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insert into t1 values (3);
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insert into t2 values (3);
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insert into t1 values (4);
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select * from t1;
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a
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1
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2
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3
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4
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select * from t2;
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a
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1
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2
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3
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select * from t3;
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a
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1
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2
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	2
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show status like "Qcache_hits";
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Variable_name	Value
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Qcache_hits	1
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commit;
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	2
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drop table t3,t2,t1;
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CREATE TABLE t1 (id int(11) NOT NULL auto_increment, PRIMARY KEY  (id));
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select count(*) from t1;
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count(*)
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0
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insert into t1 (id) values (0);
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select count(*) from t1;
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count(*)
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1
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drop table t1;
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set GLOBAL query_cache_size=1355776;
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CREATE TABLE t1 ( id int(10) NOT NULL auto_increment, a varchar(25) default NULL, PRIMARY KEY  (id), UNIQUE KEY a (a));
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CREATE TABLE t2 ( id int(10) NOT NULL auto_increment, b varchar(25) default NULL, PRIMARY KEY  (id), UNIQUE KEY b (b));
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CREATE TABLE t3 ( id int(10) NOT NULL auto_increment, t1_id int(10) NOT NULL default '0', t2_id int(10) NOT NULL default '0', state int(11) default NULL, PRIMARY KEY  (id), UNIQUE KEY t1_id (t1_id,t2_id), KEY t2_id (t2_id,t1_id), CONSTRAINT `t3_ibfk_1` FOREIGN KEY (`t1_id`) REFERENCES `t1` (`id`), CONSTRAINT `t3_ibfk_2` FOREIGN KEY (`t2_id`) REFERENCES `t2` (`id`));
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INSERT INTO t1 VALUES (1,'me');
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INSERT INTO t2 VALUES (1,'you');
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INSERT INTO t3 VALUES (2,1,1,2);
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delete from t3 where t1_id = 1 and t2_id = 1;
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select t1.* from t1, t2, t3 where t3.state & 1 = 0 and t3.t1_id = t1.id and t3.t2_id = t2.id and t1.id = 1 order by t1.a asc;
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id	a
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begin;
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insert into t3 VALUES ( NULL, 1, 1, 2 );
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insert into t3 VALUES ( NULL, 1, 1, 2 );
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ERROR 23000: Duplicate entry '1-1' for key 't1_id'
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commit;
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select t1.* from t1, t2, t3 where t3.state & 1 = 0 and t3.t1_id = t1.id and t3.t2_id = t2.id and t1.id = 1 order by t1.a asc;
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id	a
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1	me
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drop table t3,t2,t1;
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SET SESSION STORAGE_ENGINE = InnoDB;
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SET @@autocommit=1;
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connection default
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SHOW VARIABLES LIKE 'have_query_cache';
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Variable_name	Value
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have_query_cache	YES
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SET GLOBAL query_cache_size = 200000;
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flush status;
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SET @@autocommit=1;
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SET SESSION STORAGE_ENGINE = InnoDB;
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CREATE TABLE t2 (s1 int, s2 varchar(1000), key(s1));
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INSERT INTO t2 VALUES (1,repeat('a',10)),(2,repeat('a',10)),(3,repeat('a',10)),(4,repeat('a',10));
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COMMIT;
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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0
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UPDATE t2 SET s2 = 'w' WHERE s1 = 3;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	0
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connection connection1
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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0
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INSERT INTO t2 VALUES (5,'w');
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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COMMIT;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	0
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connection default
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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COMMIT;
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	0
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	1
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connection connection1
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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INSERT INTO t2 VALUES (6,'w');
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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3
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connection default
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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START TRANSACTION;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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DELETE from t2 WHERE s1=3;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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1
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COMMIT;
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connection connection1
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COMMIT;
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SELECT sql_cache count(*) FROM t2 WHERE s2 = 'w';
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count(*)
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2
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show status like "Qcache_queries_in_cache";
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Variable_name	Value
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Qcache_queries_in_cache	1
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show status like "Qcache_hits";
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Variable_name	Value
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Qcache_hits	1
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set GLOBAL query_cache_size=1048576;
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drop table t2;
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