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
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
SET global query_cache_type=ON;
SET local query_cache_type=ON;
SET SESSION DEFAULT_STORAGE_ENGINE = innodb;
drop table if exists t1;
set @save_query_cache_size = @@global.query_cache_size;
# Test that partitions works with query cache
flush query cache;
SET GLOBAL query_cache_size=1024*1024*512;
CREATE TABLE `t1` (
`id` int(11) NOT NULL ,
`created_at` datetime NOT NULL,
`cool` tinyint default 0
);
ALTER TABLE t1 PARTITION BY RANGE (TO_DAYS(created_at)) (
PARTITION month_2010_4 VALUES LESS THAN (734258),
PARTITION month_2010_5 VALUES LESS THAN (734289),
PARTITION month_max VALUES LESS THAN MAXVALUE
);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`id` int(11) NOT NULL,
`created_at` datetime NOT NULL,
`cool` tinyint(4) DEFAULT 0
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
PARTITION BY RANGE (to_days(`created_at`))
(PARTITION `month_2010_4` VALUES LESS THAN (734258) ENGINE = InnoDB,
PARTITION `month_2010_5` VALUES LESS THAN (734289) ENGINE = InnoDB,
PARTITION `month_max` VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
INSERT INTO t1 VALUES (1, now(), 0);
flush status;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 2
drop table t1;
# Test that sub-partitions works with query cache
flush query cache;
SET GLOBAL query_cache_size=1024*1024*512;
CREATE TABLE `t1` (
`id` int(11) NOT NULL ,
`created_at` datetime NOT NULL,
`cool` tinyint default 0
)
PARTITION BY RANGE (TO_DAYS(created_at))
subpartition by hash(cool) subpartitions 3 (
PARTITION month_2010_4 VALUES LESS THAN (734258),
PARTITION month_2010_5 VALUES LESS THAN (734289),
PARTITION month_max VALUES LESS THAN MAXVALUE
);
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`id` int(11) NOT NULL,
`created_at` datetime NOT NULL,
`cool` tinyint(4) DEFAULT 0
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
PARTITION BY RANGE (to_days(`created_at`))
SUBPARTITION BY HASH (`cool`)
SUBPARTITIONS 3
(PARTITION `month_2010_4` VALUES LESS THAN (734258) ENGINE = InnoDB,
PARTITION `month_2010_5` VALUES LESS THAN (734289) ENGINE = InnoDB,
PARTITION `month_max` VALUES LESS THAN MAXVALUE ENGINE = InnoDB)
INSERT INTO t1 VALUES (1, now(), 0);
flush status;
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 1
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 2
drop table t1;
#
# MySQL bug#53775 Query on partitioned table returns cached result
# from previous transaction
#
flush query cache;
flush status;
SET GLOBAL query_cache_size=1024*1024*512;
CREATE TABLE `t1` (
`id` int(11) NOT NULL ,
`created_at` datetime NOT NULL,
`cool` tinyint default 0
);
ALTER TABLE t1 PARTITION BY RANGE (TO_DAYS(created_at)) (
PARTITION month_2010_4 VALUES LESS THAN (734258),
PARTITION month_2010_5 VALUES LESS THAN (734289),
PARTITION month_max VALUES LESS THAN MAXVALUE
);
INSERT INTO t1 VALUES (1, now(), 0);
show status like "Qcache_queries_in_cache";
Variable_name Value
Qcache_queries_in_cache 0
show status like "Qcache_hits";
Variable_name Value
Qcache_hits 0
BEGIN;
UPDATE `t1` SET `cool` = 1 WHERE `id` = 1;
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
1
ROLLBACK;
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
BEGIN;
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
ROLLBACK;
SELECT cool FROM `t1` WHERE (`t1`.id = 1) LIMIT 1;
cool
0
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 1
drop table t1;
set @@global.query_cache_size = @save_query_cache_size;
SET global query_cache_type=default;
|
