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SET @start_global_value = @@global.deadlock_search_depth_short;
select @@global.deadlock_search_depth_short;
@@global.deadlock_search_depth_short
4
select @@session.deadlock_search_depth_short;
@@session.deadlock_search_depth_short
4
show global variables like 'deadlock_search_depth_short';
Variable_name Value
deadlock_search_depth_short 4
show session variables like 'deadlock_search_depth_short';
Variable_name Value
deadlock_search_depth_short 4
select * from information_schema.global_variables where variable_name='deadlock_search_depth_short';
VARIABLE_NAME VARIABLE_VALUE
DEADLOCK_SEARCH_DEPTH_SHORT 4
select * from information_schema.session_variables where variable_name='deadlock_search_depth_short';
VARIABLE_NAME VARIABLE_VALUE
DEADLOCK_SEARCH_DEPTH_SHORT 4
set global deadlock_search_depth_short=10;
select @@global.deadlock_search_depth_short;
@@global.deadlock_search_depth_short
10
set session deadlock_search_depth_short=10;
select @@session.deadlock_search_depth_short;
@@session.deadlock_search_depth_short
10
set global deadlock_search_depth_short=1.1;
ERROR 42000: Incorrect argument type to variable 'deadlock_search_depth_short'
set session deadlock_search_depth_short=1e1;
ERROR 42000: Incorrect argument type to variable 'deadlock_search_depth_short'
set global deadlock_search_depth_short="foo";
ERROR 42000: Incorrect argument type to variable 'deadlock_search_depth_short'
set global deadlock_search_depth_short=0;
select @@global.deadlock_search_depth_short;
@@global.deadlock_search_depth_short
0
set session deadlock_search_depth_short=cast(-1 as unsigned int);
Warnings:
Note 1105 Cast to unsigned converted negative integer to it's positive complement
Warning 1292 Truncated incorrect deadlock_search_depth_short value: '18446744073709551615'
select @@session.deadlock_search_depth_short;
@@session.deadlock_search_depth_short
32
SET @@global.deadlock_search_depth_short = @start_global_value;
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