mirror of
https://github.com/MariaDB/server.git
synced 2025-11-03 14:33:32 +03:00
643 lines
14 KiB
Plaintext
643 lines
14 KiB
Plaintext
flush query cache;
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flush query cache;
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reset query cache;
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flush status;
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drop table if exists t1,t2,t3;
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drop database if exists mysqltest;
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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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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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select sql_no_cache * 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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select length(now()) from t1;
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length(now())
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19
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19
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19
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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_inserts";
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Variable_name Value
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Qcache_inserts 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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drop table t1;
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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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create table t1 (a int not null);
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insert into t1 values (1),(2),(3);
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create table t2 (a int not null);
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insert into t2 values (4),(5),(6);
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create table t3 (a int not null) type=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
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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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3
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4
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5
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6
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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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3
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4
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5
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6
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 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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insert into t2 values (7);
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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 * 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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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_hits";
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Variable_name Value
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Qcache_hits 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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insert into t3 values (8);
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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 * from t3;
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a
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1
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2
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3
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8
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4
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5
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6
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7
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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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update t2 set a=9 where a=7;
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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 * 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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8
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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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update t3 set a=10 where a=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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select * from t3;
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a
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10
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2
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3
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8
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4
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5
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6
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9
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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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delete from t2 where a=9;
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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 * from t1;
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a
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10
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2
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3
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8
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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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delete from t3 where a=10;
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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, t2, t3;
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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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create table t2 (a int not null);
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insert into t2 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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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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insert into t1 values (4);
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show status like "Qcache_free_blocks";
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Variable_name Value
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Qcache_free_blocks 2
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flush query cache;
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show status like "Qcache_free_blocks";
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Variable_name Value
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Qcache_free_blocks 1
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drop table t1, t2;
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create table t1 (a text not null);
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create table t11 (a text not null);
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create table t2 (a text not null);
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create table t21 (a text not null);
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create table t3 (a text not null);
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insert into t1 values("1111111111111111111111111111111111111111111111111111");
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t11 select * from t1;
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insert into t21 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t3 select * from t1;
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insert into t3 select * from t2;
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insert into t3 select * from t1;
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select * from t11;
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select * from t21;
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show status like "Qcache_total_blocks";
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Variable_name Value
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Qcache_total_blocks 7
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show status like "Qcache_free_blocks";
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Variable_name Value
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Qcache_free_blocks 1
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insert into t11 values("");
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select * from t3;
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show status like "Qcache_total_blocks";
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Variable_name Value
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Qcache_total_blocks 8
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show status like "Qcache_free_blocks";
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Variable_name Value
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Qcache_free_blocks 1
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flush query cache;
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show status like "Qcache_total_blocks";
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Variable_name Value
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Qcache_total_blocks 7
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show status like "Qcache_free_blocks";
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Variable_name Value
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Qcache_free_blocks 1
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drop table t1, t2, t3, t11, t21;
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set query_cache_type=demand;
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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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select sql_cache * from t1 union 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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set query_cache_type=2;
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select sql_cache * from t1 union 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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select * from t1 union select sql_cache * 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_hits";
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Variable_name Value
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Qcache_hits 4
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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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set query_cache_type=on;
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reset query cache;
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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_no_cache * 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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create table t1 (a text not null);
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select CONNECTION_ID() from t1;
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CONNECTION_ID()
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select FOUND_ROWS();
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FOUND_ROWS()
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0
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select NOW() from t1;
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NOW()
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select CURDATE() from t1;
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CURDATE()
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select CURTIME() from t1;
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CURTIME()
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select DATABASE() from t1;
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DATABASE()
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select ENCRYPT("test") from t1;
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ENCRYPT("test")
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select LAST_INSERT_ID() from t1;
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last_insert_id()
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select RAND() from t1;
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RAND()
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select UNIX_TIMESTAMP() from t1;
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UNIX_TIMESTAMP()
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select USER() from t1;
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USER()
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select benchmark(1,1) from t1;
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benchmark(1,1)
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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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create table t2 (a text not null);
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insert into t1 values("1111111111111111111111111111111111111111111111111111");
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 4
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show status like "Qcache_lowmem_prunes";
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Variable_name Value
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Qcache_lowmem_prunes 0
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select a as a1, a as a2 from t1;
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select a as a2, a as a3 from t1;
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select a as a3, a as a4 from t1;
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select a as a1, a as a2 from t1;
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 4
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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_lowmem_prunes";
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Variable_name Value
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Qcache_lowmem_prunes 2
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reset query cache;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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insert into t2 select * from t1;
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insert into t1 select * from t2;
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select * from t1;
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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,t2;
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create database mysqltest;
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create table mysqltest.t1 (i int not null auto_increment, a int, primary key (i));
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insert into mysqltest.t1 (a) values (1);
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select * from mysqltest.t1 where i is null;
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i a
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1 1
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select * from mysqltest.t1;
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i a
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1 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 1
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drop database mysqltest;
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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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create table t1 (a char(1) not null);
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insert into t1 values("<22>");
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select * from t1;
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a
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<EFBFBD>
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set CHARACTER SET cp1251_koi8;
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select * from t1;
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a
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<EFBFBD>
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set CHARACTER SET DEFAULT;
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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 4
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drop table t1;
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create database if not exists mysqltest;
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create table mysqltest.t1 (i int not null);
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create table t1 (i int not null);
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insert into mysqltest.t1 (i) values (1);
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insert into t1 (i) values (2);
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select * from t1;
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i
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2
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use mysqltest;
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select * from t1;
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i
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1
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select * from t1;
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i
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1
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use test;
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select * from t1;
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i
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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 6
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drop database mysqltest;
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drop table t1;
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create table t1 (i int not null);
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insert into t1 (i) values (1),(2),(3),(4);
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select SQL_CALC_FOUND_ROWS * from t1 limit 2;
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i
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1
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2
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select FOUND_ROWS();
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FOUND_ROWS()
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4
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 6
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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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select * from t1 where i=1;
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i
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1
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select FOUND_ROWS();
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FOUND_ROWS()
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1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 6
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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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select SQL_CALC_FOUND_ROWS * from t1 limit 2;
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i
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1
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2
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select FOUND_ROWS();
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FOUND_ROWS()
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4
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 7
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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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select * from t1 where i=1;
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i
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1
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select FOUND_ROWS();
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FOUND_ROWS()
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1
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show status like "Qcache_hits";
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Variable_name Value
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Qcache_hits 8
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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 t1;
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flush query cache;
|
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reset query cache;
|
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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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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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insert delayed into t1 values (4);
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select a 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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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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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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create table t1 (a int);
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set GLOBAL query_cache_size=1000;
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show global variables like "query_cache_size";
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Variable_name Value
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query_cache_size 0
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select * from t1;
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a
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set GLOBAL query_cache_size=1024;
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show global variables like "query_cache_size";
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Variable_name Value
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query_cache_size 0
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select * from t1;
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a
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set GLOBAL query_cache_size=10240;
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show global variables like "query_cache_size";
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Variable_name Value
|
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query_cache_size 0
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select * from t1;
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a
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set GLOBAL query_cache_size=20480;
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show global variables like "query_cache_size";
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Variable_name Value
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query_cache_size 0
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select * from t1;
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a
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set GLOBAL query_cache_size=40960;
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show global variables like "query_cache_size";
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Variable_name Value
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query_cache_size 0
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select * from t1;
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||
a
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set GLOBAL query_cache_size=51200;
|
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show global variables like "query_cache_size";
|
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Variable_name Value
|
||
query_cache_size 51200
|
||
select * from t1;
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||
a
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set GLOBAL query_cache_size=61440;
|
||
show global variables like "query_cache_size";
|
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Variable_name Value
|
||
query_cache_size 61440
|
||
select * from t1;
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||
a
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||
set GLOBAL query_cache_size=81920;
|
||
show global variables like "query_cache_size";
|
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Variable_name Value
|
||
query_cache_size 81920
|
||
select * from t1;
|
||
a
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||
set GLOBAL query_cache_size=102400;
|
||
show global variables like "query_cache_size";
|
||
Variable_name Value
|
||
query_cache_size 102400
|
||
select * from t1;
|
||
a
|
||
drop table t1;
|
||
set GLOBAL query_cache_size=1048576;
|
||
create table t1 (i int not null);
|
||
create table t2 (i int not null);
|
||
select * from t1;
|
||
i
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 1
|
||
create temporary table t3 (i int not null);
|
||
select * from t2;
|
||
i
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 2
|
||
select * from t3;
|
||
i
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 2
|
||
drop table t1, t2, t3;
|
||
use mysql;
|
||
select * from db;
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 0
|
||
use test;
|
||
select * from mysql.db;
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 0
|
||
create table t1(id int auto_increment primary key);
|
||
insert into t1 values (NULL), (NULL), (NULL);
|
||
select * from t1 where id=2;
|
||
id
|
||
2
|
||
alter table t1 rename to t2;
|
||
select * from t1 where id=2;
|
||
Table 'test.t1' doesn't exist
|
||
drop table t2;
|
||
select * from t1 where id=2;
|
||
Table 'test.t1' doesn't exist
|
||
create table t1 (word char(20) not null);
|
||
select * from t1;
|
||
word
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 1
|
||
load data infile '../../std_data/words.dat' into table t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 0
|
||
drop table t1;
|
||
drop table if exists t1;
|
||
create table t1 (a int);
|
||
insert into t1 values (1),(2),(3);
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 0
|
||
select * from t1 into outfile "query_caceh.out.file";
|
||
select * from t1 limit 1 into dumpfile "query_cache.dump.file";
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 0
|
||
drop table t1;
|
||
create table t1 (a int);
|
||
insert into t1 values (1),(2);
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 0
|
||
select * from t1;
|
||
a
|
||
1
|
||
2
|
||
SET OPTION SQL_SELECT_LIMIT=1;
|
||
select * from t1;
|
||
a
|
||
1
|
||
show status like "Qcache_queries_in_cache";
|
||
Variable_name Value
|
||
Qcache_queries_in_cache 2
|
||
SET OPTION SQL_SELECT_LIMIT=DEFAULT;
|
||
drop table t1;
|