SET @start_global_value = @@global.innodb_limit_optimistic_insert_debug;
SELECT @start_global_value;
@start_global_value
0
select @@global.innodb_limit_optimistic_insert_debug;
@@global.innodb_limit_optimistic_insert_debug
0
select @@session.innodb_limit_optimistic_insert_debug;
ERROR HY000: Variable 'innodb_limit_optimistic_insert_debug' is a GLOBAL variable
show global variables like 'innodb_limit_optimistic_insert_debug';
Variable_name	Value
innodb_limit_optimistic_insert_debug	0
show session variables like 'innodb_limit_optimistic_insert_debug';
Variable_name	Value
innodb_limit_optimistic_insert_debug	0
select * from information_schema.global_variables where variable_name='innodb_limit_optimistic_insert_debug';
VARIABLE_NAME	VARIABLE_VALUE
INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG	0
select * from information_schema.session_variables where variable_name='innodb_limit_optimistic_insert_debug';
VARIABLE_NAME	VARIABLE_VALUE
INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG	0
set global innodb_limit_optimistic_insert_debug=1;
select @@global.innodb_limit_optimistic_insert_debug;
@@global.innodb_limit_optimistic_insert_debug
1
select * from information_schema.global_variables where variable_name='innodb_limit_optimistic_insert_debug';
VARIABLE_NAME	VARIABLE_VALUE
INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG	1
select * from information_schema.session_variables where variable_name='innodb_limit_optimistic_insert_debug';
VARIABLE_NAME	VARIABLE_VALUE
INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG	1
set @@global.innodb_limit_optimistic_insert_debug=0;
select @@global.innodb_limit_optimistic_insert_debug;
@@global.innodb_limit_optimistic_insert_debug
0
select * from information_schema.global_variables where variable_name='innodb_limit_optimistic_insert_debug';
VARIABLE_NAME	VARIABLE_VALUE
INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG	0
select * from information_schema.session_variables where variable_name='innodb_limit_optimistic_insert_debug';
VARIABLE_NAME	VARIABLE_VALUE
INNODB_LIMIT_OPTIMISTIC_INSERT_DEBUG	0
set session innodb_limit_optimistic_insert_debug='some';
ERROR HY000: Variable 'innodb_limit_optimistic_insert_debug' is a GLOBAL variable and should be set with SET GLOBAL
set @@session.innodb_limit_optimistic_insert_debug='some';
ERROR HY000: Variable 'innodb_limit_optimistic_insert_debug' is a GLOBAL variable and should be set with SET GLOBAL
set global innodb_limit_optimistic_insert_debug=1.1;
ERROR 42000: Incorrect argument type to variable 'innodb_limit_optimistic_insert_debug'
set global innodb_limit_optimistic_insert_debug='foo';
ERROR 42000: Incorrect argument type to variable 'innodb_limit_optimistic_insert_debug'
set global innodb_limit_optimistic_insert_debug=-2;
Warnings:
Warning	1292	Truncated incorrect innodb_limit_optimistic_insert_d value: '-2'
set global innodb_limit_optimistic_insert_debug=1e1;
ERROR 42000: Incorrect argument type to variable 'innodb_limit_optimistic_insert_debug'
SET @@global.innodb_limit_optimistic_insert_debug = @start_global_value;
SELECT @@global.innodb_limit_optimistic_insert_debug;
@@global.innodb_limit_optimistic_insert_debug
0
