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SET @start_global_value = @@global.deadlock_search_depth_long;
select @@global.deadlock_search_depth_long;
@@global.deadlock_search_depth_long
15
select @@session.deadlock_search_depth_long;
@@session.deadlock_search_depth_long
15
show global variables like 'deadlock_search_depth_long';
Variable_name Value
deadlock_search_depth_long 15
show session variables like 'deadlock_search_depth_long';
Variable_name Value
deadlock_search_depth_long 15
select * from information_schema.global_variables where variable_name='deadlock_search_depth_long';
VARIABLE_NAME VARIABLE_VALUE
DEADLOCK_SEARCH_DEPTH_LONG 15
select * from information_schema.session_variables where variable_name='deadlock_search_depth_long';
VARIABLE_NAME VARIABLE_VALUE
DEADLOCK_SEARCH_DEPTH_LONG 15
set global deadlock_search_depth_long=10;
select @@global.deadlock_search_depth_long;
@@global.deadlock_search_depth_long
10
set session deadlock_search_depth_long=10;
select @@session.deadlock_search_depth_long;
@@session.deadlock_search_depth_long
10
set global deadlock_search_depth_long=1.1;
ERROR 42000: Incorrect argument type to variable 'deadlock_search_depth_long'
set session deadlock_search_depth_long=1e1;
ERROR 42000: Incorrect argument type to variable 'deadlock_search_depth_long'
set global deadlock_search_depth_long="foo";
ERROR 42000: Incorrect argument type to variable 'deadlock_search_depth_long'
set global deadlock_search_depth_long=0;
select @@global.deadlock_search_depth_long;
@@global.deadlock_search_depth_long
0
set session deadlock_search_depth_long=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_long value: '18446744073709551615'
select @@session.deadlock_search_depth_long;
@@session.deadlock_search_depth_long
33
SET @@global.deadlock_search_depth_long = @start_global_value;
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