~drizzle-trunk/drizzle/development

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
#
# 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';
show status like "key_read%";
select count(*) from t1 where b = 'test1';
show status like "key_read%";

flush tables; flush status;
select @@preload_buffer_size;
load index into cache t1;
show status like "key_read%";
select count(*) from t1 where b = 'test1';
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;
show status like "key_read%";
select count(*) from t1 where b = 'test1';
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;
show status like "key_read%";
select count(*) from t1 where b = 'test1';
select count(*) from t2 where b = 'test1';
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