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mirror of https://github.com/MariaDB/server.git synced 2025-11-10 23:02:54 +03:00
Files
mariadb/mysql-test/r/query_cache.result
unknown 87e6c2ba77 added code covarage for functions convert(), nullif(), crc32(), is_used_lock(), char_lengtrh(), bit_xor()
added string length for more speed
made code covarage for print() method of Item
fixed printability of some items (SCRUM) (WL#1274)


mysql-test/r/auto_increment.result:
  print() code coverage
mysql-test/r/bench_count_distinct.result:
  print() code coverage
mysql-test/r/case.result:
  print() code coverage
mysql-test/r/cast.result:
  print() code coverage
mysql-test/r/ctype_collate.result:
  print() code coverage
mysql-test/r/ctype_many.result:
  convert with 3 arguments code covarage
  print() code coverage
mysql-test/r/ctype_utf8.result:
  char_length code coverage
mysql-test/r/date_formats.result:
  print() code coverage
mysql-test/r/fulltext.result:
  print() code coverage
mysql-test/r/func_compress.result:
  print() code coverage
mysql-test/r/func_gconcat.result:
  print() code coverage
mysql-test/r/func_group.result:
  bit_xor() code coverage
  print() code coverage
mysql-test/r/func_if.result:
  nullif() code coverage
  print() code coverage
mysql-test/r/func_in.result:
  print() code coverage
mysql-test/r/func_math.result:
  print() code coverage
mysql-test/r/func_op.result:
  print() code coverage
mysql-test/r/func_regexp.result:
  print() code coverage
mysql-test/r/func_set.result:
  print() code coverage
mysql-test/r/func_str.result:
  crc32() code coverage
  print() code coverage
mysql-test/r/func_system.result:
  print() code coverage
mysql-test/r/func_test.result:
  print() code coverage
mysql-test/r/func_time.result:
  print() code coverage
mysql-test/r/group_by.result:
  print() code coverage
mysql-test/r/having.result:
  print() code coverage
mysql-test/r/insert_update.result:
  print() code coverage
mysql-test/r/null.result:
  print() code coverage
mysql-test/r/olap.result:
  print() code coverage
mysql-test/r/query_cache.result:
  print() code coverage
mysql-test/r/row.result:
  print() code coverage
mysql-test/r/rpl000001.result:
  print() code coverage
mysql-test/r/rpl_get_lock.result:
  print() code coverage
mysql-test/r/rpl_master_pos_wait.result:
  print() code coverage
mysql-test/r/select.result:
  print() code coverage
mysql-test/r/subselect.result:
  print() code coverage
mysql-test/r/type_blob.result:
  print() code coverage
mysql-test/r/varbinary.result:
  print() code coverage
mysql-test/r/variables.result:
  print() code coverage
mysql-test/t/auto_increment.test:
  print() code coverage
mysql-test/t/bench_count_distinct.test:
  print() code coverage
mysql-test/t/case.test:
  print() code coverage
mysql-test/t/cast.test:
  print() code coverage
mysql-test/t/ctype_collate.test:
  print() code coverage
mysql-test/t/ctype_many.test:
  convert with 3 arguments code covarage
  print() code coverage
mysql-test/t/ctype_utf8.test:
  char_length code coverage
mysql-test/t/date_formats.test:
  print() code coverage
mysql-test/t/fulltext.test:
  print() code coverage
mysql-test/t/func_compress.test:
  print() code coverage
mysql-test/t/func_gconcat.test:
  print() code coverage
mysql-test/t/func_group.test:
  bit_xor() code coverage
  print() code coverage
mysql-test/t/func_if.test:
  nullif() code coverage
  print() code coverage
mysql-test/t/func_in.test:
  print() code coverage
mysql-test/t/func_math.test:
  print() code coverage
mysql-test/t/func_op.test:
  print() code coverage
mysql-test/t/func_regexp.test:
  print() code coverage
mysql-test/t/func_set.test:
  print() code coverage
mysql-test/t/func_str.test:
  crc32() code covarage
  print() code coverage
mysql-test/t/func_system.test:
  print() code coverage
mysql-test/t/func_test.test:
  print() code coverage
mysql-test/t/func_time.test:
  print() code coverage
mysql-test/t/group_by.test:
  print() code coverage
mysql-test/t/having.test:
  print() code coverage
mysql-test/t/insert_update.test:
  print() code coverage
mysql-test/t/null.test:
  print() code coverage
mysql-test/t/olap.test:
  print() code coverage
mysql-test/t/query_cache.test:
  print() code coverage
mysql-test/t/row.test:
  print() code coverage
mysql-test/t/rpl000001.test:
  print() code coverage
mysql-test/t/rpl_get_lock.test:
  print() code coverage
mysql-test/t/rpl_master_pos_wait.test:
  print() code coverage
mysql-test/t/select.test:
  print() code coverage
mysql-test/t/type_blob.test:
  print() code coverage
mysql-test/t/varbinary.test:
  print() code coverage
mysql-test/t/variables.test:
  print() code coverage
sql/item.cc:
  added string length for more speed
  layout fix
  fixed string printability
sql/item.h:
  added string length for more speed
sql/item_cmpfunc.cc:
  added string length for more speed
sql/item_cmpfunc.h:
  fixed printability
sql/item_create.cc:
  fixed printability
sql/item_func.cc:
  fixed printability
  added string length for more speed
sql/item_func.h:
  fixed printability
sql/item_strfunc.cc:
  fixed printability
  added string length for more speed
sql/item_strfunc.h:
  fixed printability
sql/item_subselect.cc:
  added string length for more speed
sql/item_sum.cc:
  added string length for more speed
sql/item_timefunc.cc:
  added string length for more speed
sql/item_timefunc.h:
  fixed printability
sql/item_uniq.h:
  added string length for more speed
sql/key.cc:
  added string length for more speed
sql/sql_lex.cc:
  added string length for more speed
sql/sql_parse.cc:
  after merge fix
sql/sql_repl.cc:
  string changed with character for more speed
sql/sql_select.cc:
  added string length for more speed
sql/sql_show.cc:
  added string length for more speed
2003-10-30 12:57:26 +02:00

772 lines
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flush query cache;
flush query cache;
reset query cache;
flush status;
drop table if exists t1,t2,t3;
drop database if exists mysqltest;
create table t1 (a int not null);
insert into t1 values (1),(2),(3);
select * from t1;
a
1
2
3
select * from t1;
a
1
2
3
select sql_no_cache * from t1;
a
1
2
3
select length(now()) from t1;
length(now())
19
19
19
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_inserts";
Variable_name Value
Qcache_inserts 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 1
drop table t1;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
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) type=MERGE UNION=(t1,t2) INSERT_METHOD=FIRST;
select * from t3;
a
1
2
3
4
5
6
select * from t3;
a
1
2
3
4
5
6
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 2
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
insert into t2 values (7);
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select * from t1;
a
1
2
3
select * from t1;
a
1
2
3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
insert into t3 values (8);
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select * from t3;
a
1
2
3
8
4
5
6
7
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
update t2 set a=9 where a=7;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select * from t1;
a
1
2
3
8
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
update t3 set a=10 where a=1;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select * from t3;
a
10
2
3
8
4
5
6
9
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
delete from t2 where a=9;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select * from t1;
a
10
2
3
8
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
delete from t3 where a=10;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
drop table t1, t2, t3;
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;
a
1
2
3
select * from t2;
a
1
2
3
insert into t1 values (4);
show status like "Qcache_free_blocks";
Variable_name Value
Qcache_free_blocks 2
flush query cache;
show status like "Qcache_free_blocks";
Variable_name Value
Qcache_free_blocks 1
drop table t1, t2;
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;
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;
insert into t3 select * from t1;
insert into t3 select * from t2;
insert into t3 select * from t1;
select * from t11;
select * from t21;
show status like "Qcache_total_blocks";
Variable_name Value
Qcache_total_blocks 7
show status like "Qcache_free_blocks";
Variable_name Value
Qcache_free_blocks 1
insert into t11 values("");
select * from t3;
show status like "Qcache_total_blocks";
Variable_name Value
Qcache_total_blocks 8
show status like "Qcache_free_blocks";
Variable_name Value
Qcache_free_blocks 1
flush query cache;
show status like "Qcache_total_blocks";
Variable_name Value
Qcache_total_blocks 7
show status like "Qcache_free_blocks";
Variable_name Value
Qcache_free_blocks 1
drop table t1, t2, t3, t11, t21;
set query_cache_type=demand;
create table t1 (a int not null);
insert into t1 values (1),(2),(3);
select * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select sql_cache * from t1 union select * from t1;
a
1
2
3
set query_cache_type=2;
select sql_cache * from t1 union select * from t1;
a
1
2
3
select * from t1 union select sql_cache * from t1;
a
1
2
3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 4
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
set query_cache_type=on;
reset query cache;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
select sql_no_cache * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
drop table t1;
create table t1 (a text not null);
select CONNECTION_ID() from t1;
CONNECTION_ID()
select FOUND_ROWS();
FOUND_ROWS()
0
select NOW() from t1;
NOW()
select CURDATE() from t1;
CURDATE()
select CURTIME() from t1;
CURTIME()
select DATABASE() from t1;
DATABASE()
select ENCRYPT("test") from t1;
ENCRYPT("test")
select LAST_INSERT_ID() from t1;
last_insert_id()
select RAND() from t1;
RAND()
select UNIX_TIMESTAMP() from t1;
UNIX_TIMESTAMP()
select USER() from t1;
USER()
select benchmark(1,1) from t1;
benchmark(1,1)
explain extended select benchmark(1,1) from t1;
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 system NULL NULL NULL NULL 0 const row not found
Warnings:
Note 1003 select high_priority no_cache benchmark(1,1) AS `benchmark(1,1)` from test.t1
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
create table t2 (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;
insert into t1 select * from t2;
insert into t2 select * from t1;
insert into t1 select * from t2;
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 4
show status like "Qcache_lowmem_prunes";
Variable_name Value
Qcache_lowmem_prunes 0
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;
select a as a1, a as a2 from t1;
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 4
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
show status like "Qcache_lowmem_prunes";
Variable_name Value
Qcache_lowmem_prunes 2
reset query cache;
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;
select * from t1;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
drop table t1,t2;
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;
i a
1 1
select * from mysqltest.t1;
i a
1 1
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
drop database mysqltest;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
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;
a
<EFBFBD>
set CHARACTER SET cp1251_koi8;
select * from t1;
a
<EFBFBD>
set CHARACTER SET DEFAULT;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 4
drop table t1;
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;
i
2
use mysqltest;
select * from t1;
i
1
select * from t1;
i
1
use test;
select * from t1;
i
2
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 6
drop database mysqltest;
drop table t1;
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;
i
1
2
select FOUND_ROWS();
FOUND_ROWS()
4
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 6
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
select * from t1 where i=1;
i
1
select FOUND_ROWS();
FOUND_ROWS()
1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 6
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
select SQL_CALC_FOUND_ROWS * from t1 limit 2;
i
1
2
select FOUND_ROWS();
FOUND_ROWS()
4
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 7
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
select * from t1 where i=1;
i
1
select FOUND_ROWS();
FOUND_ROWS()
1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 8
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
drop table t1;
flush query cache;
reset query cache;
create table t1 (a int not null);
insert into t1 values (1),(2),(3);
select * from t1;
a
1
2
3
select * from t1;
a
1
2
3
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
insert delayed into t1 values (4);
select a from t1;
a
1
2
3
4
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
drop table t1;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
show global variables like "query_cache_min_res_unit";
Variable_name Value
query_cache_min_res_unit 4096
set GLOBAL query_cache_min_res_unit=1001;
show global variables like "query_cache_min_res_unit";
Variable_name Value
query_cache_min_res_unit 1008
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;
a
1
2
3
select * from t1;
a
1
2
3
select * from t2;
a
1
2
3
select * from t2;
a
1
2
3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 11
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
drop table t1;
select a from t2;
a
1
2
3
select a from t2;
a
1
2
3
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 12
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
drop table t2;
set GLOBAL query_cache_min_res_unit=default;
show global variables like "query_cache_min_res_unit";
Variable_name Value
query_cache_min_res_unit 4096
create table t1 (a int not null);
insert into t1 values (1);
select "aaa" from t1;
aaa
aaa
select "AAA" from t1;
AAA
AAA
drop table t1;
create table t1 (a int);
set GLOBAL query_cache_size=1000;
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 0
select * from t1;
a
set GLOBAL query_cache_size=1024;
Warnings:
Warning 1280 Query cache failed to set size 1024, new query cache size is 0
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 0
select * from t1;
a
set GLOBAL query_cache_size=10240;
Warnings:
Warning 1280 Query cache failed to set size 10240, new query cache size is 0
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 0
select * from t1;
a
set GLOBAL query_cache_size=20480;
Warnings:
Warning 1280 Query cache failed to set size 20480, new query cache size is 0
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 0
select * from t1;
a
set GLOBAL query_cache_size=40960;
Warnings:
Warning 1280 Query cache failed to set size 40960, new query cache size is 0
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 0
select * from t1;
a
set GLOBAL query_cache_size=51200;
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 51200
select * from t1;
a
set GLOBAL query_cache_size=61440;
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 61440
select * from t1;
a
set GLOBAL query_cache_size=81920;
show global variables like "query_cache_size";
Variable_name Value
query_cache_size 81920
select * from t1;
a
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
update t1 set i=(select distinct 1 from (select * from t2) a);
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;
ERROR 42S02: Table 'test.t1' doesn't exist
drop table t2;
select * from t1 where id=2;
ERROR 42S02: 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;
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;
SET NAMES koi8r;
CREATE TABLE t1 (a char(1) character set koi8r);
INSERT INTO t1 VALUES (_koi8r'<27>'),(_koi8r'<27>');
SELECT a,'<27>','<27>'='<27>' FROM t1;
a <09> '<27>'='<27>'
<EFBFBD> <09> 1
<EFBFBD> <09> 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 12
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
set collation_connection=koi8r_bin;
SELECT a,'<27>','<27>'='<27>' FROM t1;
a <09> '<27>'='<27>'
<EFBFBD> <09> 0
<EFBFBD> <09> 0
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 12
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 2
set character_set_client=cp1251;
SELECT a,'<27>','<27>'='<27>' FROM t1;
a <09> '<27>'='<27>'
<EFBFBD> <09> 0
<EFBFBD> <09> 0
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 12
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 3
set character_set_results=cp1251;
SELECT a,'<27>','<27>'='<27>' FROM t1;
a <09> '<27>'='<27>'
<EFBFBD> <09> 0
<EFBFBD> <09> 0
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 12
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 4
DROP TABLE t1;