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SET @start_global_value = @@global.deadlock_timeout_long;
select @@global.deadlock_timeout_long;
@@global.deadlock_timeout_long
50000000
select @@session.deadlock_timeout_long;
@@session.deadlock_timeout_long
50000000
show global variables like 'deadlock_timeout_long';
Variable_name Value
deadlock_timeout_long 50000000
show session variables like 'deadlock_timeout_long';
Variable_name Value
deadlock_timeout_long 50000000
select * from information_schema.global_variables where variable_name='deadlock_timeout_long';
VARIABLE_NAME VARIABLE_VALUE
DEADLOCK_TIMEOUT_LONG 50000000
select * from information_schema.session_variables where variable_name='deadlock_timeout_long';
VARIABLE_NAME VARIABLE_VALUE
DEADLOCK_TIMEOUT_LONG 50000000
set global deadlock_timeout_long=10;
select @@global.deadlock_timeout_long;
@@global.deadlock_timeout_long
10
set session deadlock_timeout_long=10;
select @@session.deadlock_timeout_long;
@@session.deadlock_timeout_long
10
set global deadlock_timeout_long=1.1;
ERROR 42000: Incorrect argument type to variable 'deadlock_timeout_long'
set session deadlock_timeout_long=1e1;
ERROR 42000: Incorrect argument type to variable 'deadlock_timeout_long'
set global deadlock_timeout_long="foo";
ERROR 42000: Incorrect argument type to variable 'deadlock_timeout_long'
set global deadlock_timeout_long=0;
select @@global.deadlock_timeout_long;
@@global.deadlock_timeout_long
0
set session deadlock_timeout_long=cast(-1 as unsigned int);
select @@session.deadlock_timeout_long;
@@session.deadlock_timeout_long
18446744073709551615
SET @@global.deadlock_timeout_long = @start_global_value;
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