mirror of
https://github.com/MariaDB/server.git
synced 2025-01-18 04:53:01 +01:00
35b1f54450
Fixed output from mysqlbinlog when using --skip-comments Fixed warnings from valgrind Fixed ref_length when used with HEAP tables More efficent need_conversion() Fixed error handling in UPDATE with not updateable tables Fixed bug in null handling in CAST to signed/unsigned client/client_priv.h: cleanup & added OPT_COMPACT client/mysqldump.c: Added option --compact to get a compact readable dump. Ensure that SET CHARACTER_SET_CLIENT is not done if we have not remembered the old character set Print optimization comments even if --skip-comments are given as these are not true comments. (Before these where only printed at end, which was a bug) mysql-test/r/cast.result: More cast tests mysql-test/r/derived.result: Removed warnings mysql-test/r/mysqldump.result: Update results after fixing mysqlbinlog mysql-test/r/query_cache.result: Make test usable with --extern more tests mysql-test/r/rpl_until.result: Make test repeatable under valgrind mysql-test/r/sql_mode.result: Fix test result mysql-test/r/subselect.result: Make test smaller. Update wrong results mysql-test/t/cast.test: More cast tests mysql-test/t/derived.test: Removed warnings mysql-test/t/query_cache.test: Make test usable with --extern more tests mysql-test/t/rpl_until.test: fix for valgrind. Becasue of unknown reason one got 'Slave_SQL_Running=yes' in this setup mysql-test/t/subselect.test: Make test case smaller sql/field.cc: Updated need_conversion() to use new arguments sql/ha_heap.cc: Moved initialization of ref_length to right place. This fixed problem that we had a ref_length of 8 for heap tables, which was not efficent. sql/item_func.cc: Cleanup sql/item_func.h: Fixed bug in null_handling for cast to signed/unsigned sql/item_strfunc.cc: Optimized/cleaned up Item_func_conv_charset3 sql/item_sum.cc: Cleanup. Ensure that some flag variables are cleared in cleanup() sql/item_sum.h: Fixed references to uninitialized memory sql/opt_range.cc: Fixed spelling error sql/sql_class.cc: Fixed wrong return code, which could case protocol problems sql/sql_class.h: After merge fix sql/sql_prepare.cc: Added comments sql/sql_show.cc: Cleanup sql/sql_string.cc: Optimzed usage of need_conversion(). - Removed not used argument - Save diff lenght in 'offset' to not have to recalculate length several times. Cleaned up comment Optimized copy_aligned() based on the knowledge that it's only called when you have wrong data sql/sql_string.h: Updated need_conversion() and copy_aligned() to use new arguments sql/sql_update.cc: Fixed error handling with non-updateable tables sql/sql_yacc.yy: Ensure that lex->lock_options are set correctly (to get rid of warnings from valgrind) Ensure that cast_type sets lex->charset and lex->length. Without these CONVERT() didn't work properly
609 lines
16 KiB
Text
609 lines
16 KiB
Text
-- source include/have_query_cache.inc
|
||
|
||
#
|
||
# Tests with query cache
|
||
#
|
||
set GLOBAL query_cache_size=1355776;
|
||
|
||
# Reset query cache variables.
|
||
|
||
flush query cache; # This crashed in some versions
|
||
flush query cache; # This crashed in some versions
|
||
reset query cache;
|
||
flush status;
|
||
--disable_warnings
|
||
drop table if exists t1,t2,t3,t4,t11,t21;
|
||
drop database if exists mysqltest;
|
||
--enable_warnings
|
||
|
||
#
|
||
# First simple test
|
||
#
|
||
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
select * from t1;
|
||
select * from t1;
|
||
select sql_no_cache * from t1;
|
||
select length(now()) from t1;
|
||
|
||
# Only check the variables that are independent of the machine and startup
|
||
# options
|
||
|
||
show status like "Qcache_queries_in_cache";
|
||
show status like "Qcache_inserts";
|
||
show status like "Qcache_hits";
|
||
|
||
drop table t1;
|
||
|
||
show status like "Qcache_queries_in_cache";
|
||
|
||
#
|
||
# MERGE TABLES with INSERT/UPDATE and DELETE
|
||
#
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
create table t2 (a int not null);
|
||
insert into t2 values (4),(5),(6);
|
||
create table t3 (a int not null) engine=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
|
||
# insert
|
||
select * from t3;
|
||
select * from t3;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
insert into t2 values (7);
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from t1;
|
||
select * from t1;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
insert into t3 values (8);
|
||
show status like "Qcache_queries_in_cache";
|
||
# update
|
||
select * from t3;
|
||
show status like "Qcache_queries_in_cache";
|
||
update t2 set a=9 where a=7;
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
update t3 set a=10 where a=1;
|
||
show status like "Qcache_queries_in_cache";
|
||
#delete
|
||
select * from t3;
|
||
show status like "Qcache_queries_in_cache";
|
||
delete from t2 where a=9;
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
delete from t3 where a=10;
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1, t2, t3;
|
||
#
|
||
# FLUSH QUERY CACHE
|
||
#
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
create table t2 (a int not null);
|
||
insert into t2 values (1),(2),(3);
|
||
select * from t1;
|
||
select * from t2;
|
||
insert into t1 values (4);
|
||
show status like "Qcache_free_blocks";
|
||
flush query cache;
|
||
show status like "Qcache_free_blocks";
|
||
drop table t1, t2;
|
||
# With join results...
|
||
create table t1 (a text not null);
|
||
create table t11 (a text not null);
|
||
create table t2 (a text not null);
|
||
create table t21 (a text not null);
|
||
create table t3 (a text not null);
|
||
insert into t1 values("1111111111111111111111111111111111111111111111111111");
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
# t11 and t21 must be over 4Kb (QUERY_CACHE_MIN_RESULT_DATA_SIZE)
|
||
insert into t11 select * from t1;
|
||
insert into t21 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
#results of t3 must be > 0.5Mb
|
||
insert into t3 select * from t1;
|
||
insert into t3 select * from t2;
|
||
insert into t3 select * from t1;
|
||
disable_result_log;
|
||
select * from t11;
|
||
select * from t21;
|
||
enable_result_log;
|
||
show status like "Qcache_total_blocks";
|
||
show status like "Qcache_free_blocks";
|
||
disable_result_log;
|
||
insert into t11 values("");
|
||
select * from t3;
|
||
enable_result_log;
|
||
show status like "Qcache_total_blocks";
|
||
show status like "Qcache_free_blocks";
|
||
flush query cache;
|
||
show status like "Qcache_total_blocks";
|
||
show status like "Qcache_free_blocks";
|
||
drop table t1, t2, t3, t11, t21;
|
||
#
|
||
# SELECT SQL_CACHE ...
|
||
#
|
||
set query_cache_type=demand;
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
select sql_cache * from t1 union select * from t1;
|
||
set query_cache_type=2;
|
||
select sql_cache * from t1 union select * from t1;
|
||
select * from t1 union select sql_cache * from t1;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
set query_cache_type=on;
|
||
#
|
||
# RESET QUERY CACHE
|
||
#
|
||
reset query cache;
|
||
show status like "Qcache_queries_in_cache";
|
||
#
|
||
# SELECT SQL_NO_CACHE
|
||
#
|
||
select sql_no_cache * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1;
|
||
#
|
||
# Check that queries that uses NOW(), LAST_INSERT_ID()... are not cached.
|
||
#
|
||
create table t1 (a text not null);
|
||
select CONNECTION_ID() from t1;
|
||
#GET_LOCK
|
||
#RELEASE_LOCK
|
||
#LOAD_FILE
|
||
select FOUND_ROWS();
|
||
select NOW() from t1;
|
||
select CURDATE() from t1;
|
||
select CURTIME() from t1;
|
||
select DATABASE() from t1;
|
||
select ENCRYPT("test") from t1;
|
||
select LAST_INSERT_ID() from t1;
|
||
select RAND() from t1;
|
||
select UNIX_TIMESTAMP() from t1;
|
||
select USER() from t1;
|
||
select benchmark(1,1) from t1;
|
||
explain extended select benchmark(1,1) from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
#
|
||
# Tests when the cache is filled
|
||
#
|
||
create table t2 (a text not null);
|
||
insert into t1 values("1111111111111111111111111111111111111111111111111111");
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2; # 2
|
||
insert into t2 select * from t1; # 3
|
||
insert into t1 select * from t2; # 5
|
||
insert into t2 select * from t1; # 8
|
||
insert into t1 select * from t2; # 13
|
||
insert into t2 select * from t1; # 21
|
||
insert into t1 select * from t2; # 34
|
||
insert into t2 select * from t1; # 55
|
||
insert into t1 select * from t2; # 89
|
||
insert into t2 select * from t1; # 144
|
||
insert into t1 select * from t2; # 233
|
||
insert into t2 select * from t1; # 357
|
||
insert into t1 select * from t2; # 610
|
||
insert into t2 select * from t1; # 987
|
||
insert into t1 select * from t2; # 1597
|
||
insert into t2 select * from t1; # 2584
|
||
insert into t1 select * from t2; # 4181
|
||
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_lowmem_prunes";
|
||
disable_result_log;
|
||
select a as a1, a as a2 from t1;
|
||
select a as a2, a as a3 from t1;
|
||
select a as a3, a as a4 from t1;
|
||
# next query must be out of 1Mb cache
|
||
select a as a1, a as a2 from t1;
|
||
enable_result_log;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
show status like "Qcache_lowmem_prunes";
|
||
reset query cache;
|
||
#
|
||
# Query bigger then query_cache_limit
|
||
#
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
insert into t2 select * from t1;
|
||
insert into t1 select * from t2;
|
||
disable_result_log;
|
||
select * from t1;
|
||
enable_result_log;
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1,t2;
|
||
|
||
#
|
||
# noncachable ODBC work around (and prepare cache for drop database)
|
||
#
|
||
create database mysqltest;
|
||
create table mysqltest.t1 (i int not null auto_increment, a int, primary key (i));
|
||
insert into mysqltest.t1 (a) values (1);
|
||
select * from mysqltest.t1 where i is null;
|
||
|
||
#
|
||
# drop db
|
||
#
|
||
create table t1(a int);
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from mysqltest.t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
drop database mysqltest;
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1;
|
||
|
||
#
|
||
# Charset convertion (cp1251_koi8 always present)
|
||
#
|
||
create table t1 (a char(1) not null collate koi8r_general_ci);
|
||
insert into t1 values(_koi8r"<22>");
|
||
set CHARACTER SET koi8r;
|
||
select * from t1;
|
||
set CHARACTER SET cp1251_koi8;
|
||
select * from t1;
|
||
set CHARACTER SET DEFAULT;
|
||
show status like "Qcache_queries_in_cache";
|
||
show status like "Qcache_hits";
|
||
drop table t1;
|
||
|
||
# The following tests can't be done as the values differen on 32 and 64 bit
|
||
# machines :(
|
||
#show variables like "query_cache_size";
|
||
#show status like "Qcache_free_memory";
|
||
|
||
#
|
||
# same tables in different db
|
||
#
|
||
create database if not exists mysqltest;
|
||
create table mysqltest.t1 (i int not null);
|
||
create table t1 (i int not null);
|
||
insert into mysqltest.t1 (i) values (1);
|
||
insert into t1 (i) values (2);
|
||
|
||
select * from t1;
|
||
use mysqltest;
|
||
select * from t1;
|
||
select * from t1;
|
||
use test;
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
show status like "Qcache_hits";
|
||
|
||
drop database mysqltest;
|
||
drop table t1;
|
||
|
||
#
|
||
# FOUND_ROWS()
|
||
#
|
||
|
||
create table t1 (i int not null);
|
||
insert into t1 (i) values (1),(2),(3),(4);
|
||
|
||
select SQL_CALC_FOUND_ROWS * from t1 limit 2;
|
||
select FOUND_ROWS();
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
|
||
select * from t1 where i=1;
|
||
select FOUND_ROWS();
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
|
||
select SQL_CALC_FOUND_ROWS * from t1 limit 2;
|
||
select FOUND_ROWS();
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
|
||
select * from t1 where i=1;
|
||
select FOUND_ROWS();
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1;
|
||
|
||
#
|
||
# Test insert delayed
|
||
#
|
||
|
||
flush query cache;
|
||
reset query cache;
|
||
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
select * from t1;
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
insert delayed into t1 values (4);
|
||
--sleep 5 # Wait for insert delayed to be executed.
|
||
select a from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
|
||
#
|
||
# Test of min result data unit size changing
|
||
#
|
||
show global variables like "query_cache_min_res_unit";
|
||
set GLOBAL query_cache_min_res_unit=1001;
|
||
show global variables like "query_cache_min_res_unit";
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
create table t2 (a int not null);
|
||
insert into t2 values (1),(2),(3);
|
||
select * from t1;
|
||
select * from t1;
|
||
select * from t2;
|
||
select * from t2;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1;
|
||
select a from t2;
|
||
select a from t2;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t2;
|
||
set GLOBAL query_cache_min_res_unit=default;
|
||
show global variables like "query_cache_min_res_unit";
|
||
|
||
#
|
||
# Case sensitive test
|
||
#
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1);
|
||
select "aaa" from t1;
|
||
select "AAA" from t1;
|
||
drop table t1;
|
||
|
||
#
|
||
# Test of query cache resizing
|
||
#
|
||
create table t1 (a int);
|
||
set GLOBAL query_cache_size=1000;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=1024;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=10240;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=20480;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=40960;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=51200;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=61440;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=81920;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
set GLOBAL query_cache_size=102400;
|
||
show global variables like "query_cache_size";
|
||
select * from t1;
|
||
drop table t1;
|
||
|
||
#
|
||
# Temporary tables
|
||
#
|
||
set GLOBAL query_cache_size=1048576;
|
||
create table t1 (i int not null);
|
||
create table t2 (i int not null);
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
create temporary table t3 (i int not null);
|
||
select * from t2;
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from t3;
|
||
show status like "Qcache_queries_in_cache";
|
||
update t1 set i=(select distinct 1 from (select * from t2) a);
|
||
drop table t1, t2, t3;
|
||
|
||
#
|
||
# system databse test
|
||
#
|
||
use mysql;
|
||
disable_result_log;
|
||
select * from db;
|
||
enable_result_log;
|
||
show status like "Qcache_queries_in_cache";
|
||
use test;
|
||
disable_result_log;
|
||
select * from mysql.db;
|
||
enable_result_log;
|
||
show status like "Qcache_queries_in_cache";
|
||
|
||
#
|
||
# simple rename test
|
||
#
|
||
create table t1(id int auto_increment primary key);
|
||
insert into t1 values (NULL), (NULL), (NULL);
|
||
select * from t1 where id=2;
|
||
alter table t1 rename to t2;
|
||
-- error 1146
|
||
select * from t1 where id=2;
|
||
drop table t2;
|
||
-- error 1146
|
||
select * from t1 where id=2;
|
||
|
||
#
|
||
# Load data invalidation test
|
||
#
|
||
create table t1 (word char(20) not null);
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
--replace_result $MYSQL_TEST_DIR TEST_DIR
|
||
eval load data infile '$MYSQL_TEST_DIR/std_data/words.dat' into table t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
select count(*) from t1;
|
||
drop table t1;
|
||
|
||
#
|
||
# INTO OUTFILE/DUMPFILE test
|
||
#
|
||
create table t1 (a int);
|
||
insert into t1 values (1),(2),(3);
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from t1 into outfile "query_cache.out.file";
|
||
--error 1086
|
||
select * from t1 into outfile "query_cache.out.file";
|
||
select * from t1 limit 1 into dumpfile "query_cache.dump.file";
|
||
show status like "Qcache_queries_in_cache";
|
||
drop table t1;
|
||
|
||
#
|
||
# test of SQL_SELECT_LIMIT
|
||
#
|
||
create table t1 (a int);
|
||
insert into t1 values (1),(2);
|
||
show status like "Qcache_queries_in_cache";
|
||
select * from t1;
|
||
SET OPTION SQL_SELECT_LIMIT=1;
|
||
select * from t1;
|
||
show status like "Qcache_queries_in_cache";
|
||
SET OPTION SQL_SELECT_LIMIT=DEFAULT;
|
||
drop table t1;
|
||
|
||
#
|
||
# query cache crash on using same table twice in one query test
|
||
#
|
||
flush query cache;
|
||
reset query cache;
|
||
flush status;
|
||
set GLOBAL query_cache_size=1048576;
|
||
|
||
create table t1 (a int not null);
|
||
insert into t1 values (1),(2),(3);
|
||
create table t2 (a text not null);
|
||
create table t3 (a text not null);
|
||
insert into t3 values("1111111111111111111111111111111111111111111111111111");
|
||
insert into t2 select * from t3;
|
||
insert into t3 select * from t2;
|
||
insert into t2 select * from t3;
|
||
insert into t3 select * from t2;
|
||
insert into t2 select * from t3;
|
||
insert into t3 select * from t2;
|
||
insert into t2 select * from t3;
|
||
insert into t3 select * from t2;
|
||
insert into t2 select * from t3;
|
||
insert into t3 select * from t2;
|
||
drop table t2;
|
||
create table t2 (a int not null);
|
||
insert into t2 values (1),(2),(3);
|
||
create table t4 (a int not null);
|
||
insert into t4 values (1),(2),(3);
|
||
|
||
disable_result_log;
|
||
select * from t4;
|
||
select * from t2;
|
||
select * from t1 as tt, t1 as ttt where tt.a=1 and ttt.a=2;
|
||
select * from t2;
|
||
select * from t4;
|
||
select * from t1 as tt, t1 as ttt where tt.a=1 and ttt.a=2;
|
||
select * from t2;
|
||
select * from t4;
|
||
select * from t1 as tt, t1 as ttt where tt.a=1 and ttt.a=2;
|
||
|
||
delete from t2 where a=1;
|
||
flush query cache;
|
||
select * from t3;
|
||
enable_result_log;
|
||
delete from t4 where a=1;
|
||
flush query cache;
|
||
|
||
drop table t1,t2,t3,t4;
|
||
|
||
#
|
||
# Test character set related variables:
|
||
# character_set_result
|
||
# character_set_client
|
||
# charactet_set_connection/collation_connection
|
||
# If at least one of the above variables has changed,
|
||
# the cached query can't be reused. In the below test
|
||
# absolutely the same query is used several times,
|
||
# SELECT should fetch different results for every instance.
|
||
# No hits should be produced.
|
||
# New cache entry should appear for every SELECT.
|
||
#
|
||
SET NAMES koi8r;
|
||
CREATE TABLE t1 (a char(1) character set koi8r);
|
||
INSERT INTO t1 VALUES (_koi8r'<27>'),(_koi8r'<27>');
|
||
#
|
||
# Run select
|
||
#
|
||
SELECT a,'<27>','<27>'='<27>' FROM t1;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
#
|
||
# Change collation_connection and run the same query again
|
||
#
|
||
set collation_connection=koi8r_bin;
|
||
SELECT a,'<27>','<27>'='<27>' FROM t1;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
#
|
||
# Now change character_set_client and run the same query again
|
||
#
|
||
set character_set_client=cp1251;
|
||
SELECT a,'<27>','<27>'='<27>' FROM t1;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
#
|
||
# And finally change character_set_results and run the same query again
|
||
#
|
||
set character_set_results=cp1251;
|
||
SELECT a,'<27>','<27>'='<27>' FROM t1;
|
||
show status like "Qcache_hits";
|
||
show status like "Qcache_queries_in_cache";
|
||
#
|
||
# Keep things tidy
|
||
#
|
||
DROP TABLE t1;
|
||
|
||
#
|
||
# DROP current database test
|
||
#
|
||
CREATE TABLE t1 (a int(1));
|
||
CREATE DATABASE mysqltest;
|
||
USE mysqltest;
|
||
DROP DATABASE mysqltest;
|
||
SELECT * FROM test.t1;
|
||
USE test;
|
||
DROP TABLE t1;
|
||
|
||
|
||
SET GLOBAL query_cache_size=0;
|