1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
|
set @save_query_cache_size=@@global.query_cache_size;
set global query_cache_type=ON;
set local query_cache_type=ON;
set global query_cache_size=1355776;
create table t1 (a int not null);
insert into t1 values (1),(2),(3);
select * from t1;
a
1
2
3
select statement_schema, statement_text, result_blocks_count, result_blocks_size from information_schema.query_cache_info;
statement_schema statement_text result_blocks_count result_blocks_size
test select * from t1 1 512
select @@time_zone into @time_zone;
select @@default_week_format into @default_week_format;
select @@character_set_client into @character_set_client;
select @@character_set_results into @character_set_results;
select @@sql_mode into @sql_mode;
select @@div_precision_increment into @div_precision_increment;
select @@lc_time_names into @lc_time_names;
select @@max_sort_length into @max_sort_length;
select @@autocommit into @autocommit;
select @@group_concat_max_len into @group_concat_max_len;
select Name into @new_time_zone from mysql.time_zone_name limit 1;
set time_zone=@new_time_zone,default_week_format=4,character_set_client='binary',character_set_results='utf32',collation_connection='utf32_bin',sql_mode='STRICT_ALL_TABLES',div_precision_increment=7,lc_time_names='ar_SD',autocommit=0, group_concat_max_len=513, max_sort_length=1011;
select * from t1;
set time_zone= @time_zone, default_week_format= @default_week_format, character_set_client= @character_set_client,character_set_results= @character_set_results, sql_mode= @sql_mode, div_precision_increment= @div_precision_increment, lc_time_names= @lc_time_names, autocommit= @autocommit, group_concat_max_len= @group_concat_max_len, max_sort_length= @max_sort_length;
select * from information_schema.query_cache_info;
STATEMENT_SCHEMA STATEMENT_TEXT RESULT_BLOCKS_COUNT RESULT_BLOCKS_SIZE RESULT_BLOCKS_SIZE_USED LIMIT MAX_SORT_LENGTH GROUP_CONCAT_MAX_LENGTH CHARACTER_SET_CLIENT CHARACTER_SET_RESULT COLLATION TIMEZONE DEFAULT_WEEK_FORMAT DIV_PRECISION_INCREMENT SQL_MODE LC_TIME_NAMES CLIENT_LONG_FLAG CLIENT_PROTOCOL_41 CLIENT_EXTENDED_METADATA PROTOCOL_TYPE MORE_RESULTS_EXISTS IN_TRANS AUTOCOMMIT PACKET_NUMBER HITS
test select * from t1 1 512 # -1 1011 513 binary utf32 utf32_bin Europe/Moscow 4 7 STRICT_ALL_TABLES ar_SD 1 1 1 # 0 0 0 # 0
test select * from t1 1 512 # -1 1024 1048576 latin1 latin1 latin1_swedish_ci SYSTEM 0 4 STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION en_US 1 1 1 # 0 0 1 # 0
reset query cache;
select * from t1;
a
1
2
3
select * from t1;
a
1
2
3
select hits, statement_text from information_schema.query_cache_info;
hits statement_text
1 select * from t1
drop table t1;
select statement_schema, statement_text, result_blocks_count, result_blocks_size from information_schema.query_cache_info;
statement_schema statement_text result_blocks_count result_blocks_size
set global query_cache_size = 0;
select * from information_schema.query_cache_info;
STATEMENT_SCHEMA STATEMENT_TEXT RESULT_BLOCKS_COUNT RESULT_BLOCKS_SIZE RESULT_BLOCKS_SIZE_USED LIMIT MAX_SORT_LENGTH GROUP_CONCAT_MAX_LENGTH CHARACTER_SET_CLIENT CHARACTER_SET_RESULT COLLATION TIMEZONE DEFAULT_WEEK_FORMAT DIV_PRECISION_INCREMENT SQL_MODE LC_TIME_NAMES CLIENT_LONG_FLAG CLIENT_PROTOCOL_41 CLIENT_EXTENDED_METADATA PROTOCOL_TYPE MORE_RESULTS_EXISTS IN_TRANS AUTOCOMMIT PACKET_NUMBER HITS
set global query_cache_size= default;
set global query_cache_type=default;
show query_cache_info;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'query_cache_info' at line 1
flush query_cache_info;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'query_cache_info' at line 1
set @@global.query_cache_size=@save_query_cache_size;
|
