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MDEV-6954: SET STATEMENT rand_seedX = ...FOR ... makes the next rand() to return 0

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The variables now return real values. They can't be made usual variables because they do not have DEFAULT value.
This commit is contained in:
Oleksandr Byelkin
2015-03-11 11:02:13 +01:00
parent 41106b229e
commit a21ef88d2a
10 changed files with 114 additions and 80 deletions
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13
mysql-test/suite/sys_vars/r/rand_seed1_basic.result
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@ -1,27 +1,30 @@
select @@global.rand_seed1;
ERROR HY000: Variable 'rand_seed1' is a SESSION variable
set session rand_seed1=default;
ERROR 42000: Variable 'rand_seed1' doesn't have a default value
set session rand_seed1=10969771;
select @@session.rand_seed1;
@@session.rand_seed1
0
10969771
show global variables like 'rand_seed1';
Variable_name Value
show session variables like 'rand_seed1';
Variable_name Value
rand_seed1 0
rand_seed1 10969771
select * from information_schema.global_variables where variable_name='rand_seed1';
VARIABLE_NAME VARIABLE_VALUE
select * from information_schema.session_variables where variable_name='rand_seed1';
VARIABLE_NAME VARIABLE_VALUE
RAND_SEED1 0
RAND_SEED1 10969771
set session rand_seed1=1;
select @@session.rand_seed1;
@@session.rand_seed1
0
1
select * from information_schema.global_variables where variable_name='rand_seed1';
VARIABLE_NAME VARIABLE_VALUE
select * from information_schema.session_variables where variable_name='rand_seed1';
VARIABLE_NAME VARIABLE_VALUE
RAND_SEED1 0
RAND_SEED1 1
set global rand_seed1=1;
ERROR HY000: Variable 'rand_seed1' is a SESSION variable and can't be used with SET GLOBAL
set session rand_seed1=1.1;