SET @start_global_value = @@global.aria_group_commit;
select @@global.aria_group_commit;
@@global.aria_group_commit
none
select @@session.aria_group_commit;
ERROR HY000: Variable 'aria_group_commit' is a GLOBAL variable
show global variables like 'aria_group_commit';
Variable_name	Value
aria_group_commit	none
show session variables like 'aria_group_commit';
Variable_name	Value
aria_group_commit	none
select * from information_schema.global_variables where variable_name='aria_group_commit';
VARIABLE_NAME	VARIABLE_VALUE
ARIA_GROUP_COMMIT	none
select * from information_schema.session_variables where variable_name='aria_group_commit';
VARIABLE_NAME	VARIABLE_VALUE
ARIA_GROUP_COMMIT	none
set global aria_group_commit=1;
select @@global.aria_group_commit;
@@global.aria_group_commit
hard
set session aria_group_commit=1;
ERROR HY000: Variable 'aria_group_commit' is a GLOBAL variable and should be set with SET GLOBAL
set global aria_group_commit=none;
select @@global.aria_group_commit;
@@global.aria_group_commit
none
set global aria_group_commit=hard;
select @@global.aria_group_commit;
@@global.aria_group_commit
hard
set global aria_group_commit=soft;
select @@global.aria_group_commit;
@@global.aria_group_commit
soft
set global aria_group_commit=1.1;
ERROR 42000: Incorrect argument type to variable 'aria_group_commit'
set global aria_group_commit=1e1;
ERROR 42000: Incorrect argument type to variable 'aria_group_commit'
set global aria_group_commit="foo";
ERROR 42000: Variable 'aria_group_commit' can't be set to the value of 'foo'
set global aria_group_commit=3;
ERROR 42000: Variable 'aria_group_commit' can't be set to the value of '3'
SET @@global.aria_group_commit = @start_global_value;