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Added key cache assignment mi_locking.c: Added key cache assignment: correction my_sys.h: Added key cache variable structure include/my_sys.h: Added key cache variable structure include/my_base.h: Added key cache assignment include/myisam.h: Added key cache assignment include/my_global.h: Added key cache assignment isam/_page.c: Added key cache assignment isam/close.c: Added key cache assignment isam/isamchk.c: Added key cache assignment isam/isamlog.c: Added key cache assignment isam/panic.c: Added key cache assignment isam/_locking.c: Added key cache assignment isam/test2.c: Added key cache assignment isam/test3.c: Added key cache assignment myisam/myisamdef.h: Added key cache assignment myisam/mi_check.c: Added key cache assignment myisam/mi_close.c: Added key cache assignment myisam/mi_extra.c: Added key cache assignment myisam/mi_page.c: Added key cache assignment myisam/mi_panic.c: Added key cache assignment myisam/mi_preload.c: Added key cache assignment myisam/mi_test1.c: Added key cache assignment myisam/mi_test2.c: Added key cache assignment myisam/mi_test3.c: Added key cache assignment myisam/myisamchk.c: Added key cache assignment myisam/myisamlog.c: Added key cache assignment myisam/mi_delete_all.c: Added key cache assignment myisam/mi_locking.c: Added key cache assignment: correction myisam/mi_keycache.c: Added key cache assignment sql/handler.h: Added key cache assignment sql/mysql_priv.h: Added key cache assignment sql/set_var.h: Added key cache assignment sql/table.h: Added key cache assignment sql/ha_myisam.cc: Added key cache assignment sql/ha_myisammrg.cc: Added key cache assignment sql/handler.cc: Added key cache assignment sql/mysqld.cc: Added key cache assignment sql/set_var.cc: Added key cache assignment sql/sql_base.cc: Added key cache assignment sql/sql_table.cc: Added key cache assignment sql/sql_test.cc: Added key cache assignment sql/sql_yacc.yy: Added key cache assignment mysys/mf_keycache.c: Added key cache assignment mysql-test/t/key_cache.test: Added key cache assignment mysql-test/r/key_cache.result: Added key cache assignment
This commit is contained in:
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@ -35,9 +35,200 @@ SELECT @@small.key_buffer_size;
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1048576
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SELECT @@medium.key_buffer_size;
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@@medium.key_buffer_size
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4194304
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0
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SET @@global.key_buffer_size=@save_key_buffer;
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SELECT @@default.key_buffer_size;
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ERROR 42000: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use near 'default.key_buffer_size' at line 1
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SELECT @@skr.table_type="test";
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ERROR HY000: Variable 'table_type' is not a variable component (Can't be used as XXXX.variable_name)
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select @@keycache1.key_cache_block_size;
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@@keycache1.key_cache_block_size
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0
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select @@keycache1.key_buffer_size;
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@@keycache1.key_buffer_size
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0
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set global keycache1.key_cache_block_size=2048;
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select @@keycache1.key_buffer_size;
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@@keycache1.key_buffer_size
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0
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select @@keycache1.key_cache_block_size;
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@@keycache1.key_cache_block_size
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2048
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set global keycache1.key_buffer_size=1*1024*1024;
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select @@keycache1.key_buffer_size;
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@@keycache1.key_buffer_size
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1048576
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select @@keycache1.key_cache_block_size;
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@@keycache1.key_cache_block_size
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2048
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set global keycache2.key_buffer_size=4*1024*1024;
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select @@keycache2.key_buffer_size;
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@@keycache2.key_buffer_size
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4194304
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select @@keycache2.key_cache_block_size;
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@@keycache2.key_cache_block_size
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1024
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set global keycache1.key_buffer_size=0;
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select @@keycache1.key_buffer_size;
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@@keycache1.key_buffer_size
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0
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select @@keycache1.key_cache_block_size;
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@@keycache1.key_cache_block_size
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0
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select @@key_buffer_size;
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@@key_buffer_size
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16777216
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select @@key_cache_block_size;
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@@key_cache_block_size
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1024
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drop table if exists t1, t2;
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create table t1 (p int primary key, a char(10));
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create table t2 (p int primary key, i int, a char(10), key k1(i), key k2(a));
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insert into t1 values (1, 'qqqq'), (11, 'yyyy');
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insert into t2 values (1, 1, 'qqqq'), (2, 1, 'pppp'),
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(3, 1, 'yyyy'), (4, 3, 'zzzz');
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select * from t1;
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p a
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1 qqqq
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11 yyyy
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select * from t2;
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p i a
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1 1 qqqq
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2 1 pppp
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3 1 yyyy
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4 3 zzzz
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update t1 set p=2 where p=1;
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update t2 set i=2 where i=1;
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cache index t1 keys in keycache1;
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Table Op Msg_type Msg_text
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test.t1 assign_to_keycache status OK
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explain select p from t1;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index NULL PRIMARY 4 NULL 2 Using index
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select p from t1;
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p
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2
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11
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explain select i from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL k1 5 NULL 4 Using index
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select i from t2;
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i
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2
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2
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2
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3
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explain select count(*) from t1, t2 where t1.p = t2.i;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 2 Using index
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1 SIMPLE t2 index k1 k1 5 NULL 4 Using where; Using index
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select count(*) from t1, t2 where t1.p = t2.i;
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count(*)
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3
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cache index t2 keys in keycache1;
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Table Op Msg_type Msg_text
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test.t2 assign_to_keycache status OK
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update t2 set p=p+1000, i=2 where a='qqqq';
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cache index t2 keys in keycache2;
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Table Op Msg_type Msg_text
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test.t2 assign_to_keycache status OK
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insert into t2 values (2000, 3, 'yyyy');
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cache index t2 keys in keycache1;
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Table Op Msg_type Msg_text
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test.t2 assign_to_keycache status OK
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update t2 set p=3000 where a='zzzz';
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select * from t2;
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p i a
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1001 2 qqqq
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2 2 pppp
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3 2 yyyy
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3000 3 zzzz
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2000 3 yyyy
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explain select p from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL PRIMARY 4 NULL 5 Using index
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select p from t2;
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p
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2
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3
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1001
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2000
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3000
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explain select i from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL k1 5 NULL 5 Using index
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select i from t2;
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i
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2
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2
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2
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3
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3
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explain select a from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL k2 11 NULL 5 Using index
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select a from t2;
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a
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pppp
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qqqq
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yyyy
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yyyy
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zzzz
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select @@keycache2.key_buffer_size;
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@@keycache2.key_buffer_size
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4194304
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select @@keycache2.key_cache_block_size;
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@@keycache2.key_cache_block_size
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1024
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set global keycache2.key_buffer_size=0;
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select @@keycache2.key_buffer_size;
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@@keycache2.key_buffer_size
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0
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select @@keycache2.key_cache_block_size;
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@@keycache2.key_cache_block_size
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0
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update t2 set p=4000 where a='zzzz';
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update t1 set p=p+1;
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set global keycache1.key_buffer_size=0;
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select * from t2;
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p i a
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1001 2 qqqq
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2 2 pppp
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3 2 yyyy
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4000 3 zzzz
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2000 3 yyyy
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select p from t2;
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p
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2
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3
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1001
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2000
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4000
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explain select i from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL k1 5 NULL 5 Using index
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select i from t2;
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i
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2
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2
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2
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3
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3
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explain select a from t2;
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t2 index NULL k2 11 NULL 5 Using index
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select a from t2;
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a
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pppp
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qqqq
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yyyy
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yyyy
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zzzz
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select * from t1;
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p a
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3 qqqq
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12 yyyy
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select p from t1;
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p
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3
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12
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