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
|
# Test for preload_keys of Myisam.The InnoDB storage
# engine doesn't support this preload_keys
# Hence MTR starts mysqld with MyISAM as default
--source include/force_myisam_default.inc
--source include/have_myisam.inc
#
# Testing of PRELOAD
#
--disable_warnings
drop table if exists t1, t2;
--enable_warnings
create table t1 (
a int not null auto_increment,
b char(16) not null,
primary key (a),
key (b)
);
create table t2(
a int not null auto_increment,
b char(16) not null,
primary key (a),
key (b)
);
insert into t1(b) values
('test0'),
('test1'),
('test2'),
('test3'),
('test4'),
('test5'),
('test6'),
('test7');
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
insert into t2(b) select b from t1;
insert into t1(b) select b from t2;
select count(*) from t1;
select count(*) from t2;
flush tables; flush status;
show status like "key_read%";
select count(*) from t1 where b = 'test1';
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
select count(*) from t1 where b = 'test1';
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
flush tables; flush status;
select @@preload_buffer_size;
load index into cache t1;
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
select count(*) from t1 where b = 'test1';
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
flush tables; flush status;
show status like "key_read%";
set session preload_buffer_size=256*1024;
select @@preload_buffer_size;
load index into cache t1 ignore leaves;
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
select count(*) from t1 where b = 'test1';
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
flush tables; flush status;
show status like "key_read%";
set session preload_buffer_size=1*1024;
select @@preload_buffer_size;
load index into cache t1, t2 key (primary,b) ignore leaves;
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
select count(*) from t1 where b = 'test1';
select count(*) from t2 where b = 'test1';
--skip_if_hypergraph # Depends on the query plan.
show status like "key_read%";
flush tables; flush status;
show status like "key_read%";
load index into cache t3, t2 key (primary,b) ;
show status like "key_read%";
flush tables; flush status;
show status like "key_read%";
load index into cache t3 key (b), t2 key (c) ;
show status like "key_read%";
drop table t1, t2;
# End of 4.1 tests
|
