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
|
--source include/have_optimizer_trace.inc
# Basic read/write test.
# Functionality of this variable is covered in
# main.optimizer_trace*.test
SELECT @@global.optimizer_trace_offset;
SET @@global.optimizer_trace_offset=5;
show global variables like 'optimizer_trace_offset';
select * from information_schema.global_variables where variable_name='optimizer_trace_offset';
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
select * from information_schema.session_variables where variable_name='optimizer_trace_offset';
#
# show that it's writable
#
set session optimizer_trace_offset=10;
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
set session optimizer_trace_offset=0;
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
set session optimizer_trace_offset=-100;
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
# 32-bit big values should be accepted on all platforms
set session optimizer_trace_offset=2000000000;
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
set session optimizer_trace_offset=-2000000000;
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
set session optimizer_trace_offset=default;
select @@session.optimizer_trace_offset;
show session variables like 'optimizer_trace_offset';
set global optimizer_trace_offset=default;
select @@global.optimizer_trace_offset;
show global variables like 'optimizer_trace_offset';
#
# incorrect assignments
#
--error ER_WRONG_TYPE_FOR_VAR
set optimizer_trace_offset=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set optimizer_trace_offset="foobar";
|
