SET @start_global_value = @@global.aria_repair_threads;
select @@global.aria_repair_threads;
@@global.aria_repair_threads
1
select @@session.aria_repair_threads;
@@session.aria_repair_threads
1
show global variables like 'aria_repair_threads';
Variable_name	Value
aria_repair_threads	1
show session variables like 'aria_repair_threads';
Variable_name	Value
aria_repair_threads	1
select * from information_schema.global_variables where variable_name='aria_repair_threads';
VARIABLE_NAME	VARIABLE_VALUE
ARIA_REPAIR_THREADS	1
select * from information_schema.session_variables where variable_name='aria_repair_threads';
VARIABLE_NAME	VARIABLE_VALUE
ARIA_REPAIR_THREADS	1
set global aria_repair_threads=10;
select @@global.aria_repair_threads;
@@global.aria_repair_threads
10
set session aria_repair_threads=10;
select @@session.aria_repair_threads;
@@session.aria_repair_threads
10
set global aria_repair_threads=1.1;
ERROR 42000: Incorrect argument type to variable 'aria_repair_threads'
set session aria_repair_threads=1e1;
ERROR 42000: Incorrect argument type to variable 'aria_repair_threads'
set global aria_repair_threads="foo";
ERROR 42000: Incorrect argument type to variable 'aria_repair_threads'
set global aria_repair_threads=0;
Warnings:
Warning	1292	Truncated incorrect aria_repair_threads value: '0'
select @@global.aria_repair_threads;
@@global.aria_repair_threads
1
set session aria_repair_threads=cast(-1 as unsigned int);
select @@session.aria_repair_threads;
@@session.aria_repair_threads
128
SET @@global.aria_repair_threads = @start_global_value;