SET @start_value = @@GLOBAL.innodb_sched_priority_master;
SELECT @@GLOBAL.innodb_sched_priority_master;
@@GLOBAL.innodb_sched_priority_master
19
SELECT @@SESSION.innodb_sched_priority_master;
ERROR HY000: Variable 'innodb_sched_priority_master' is a GLOBAL variable
SET GLOBAL innodb_sched_priority_master=19;
SELECT @@GLOBAL.innodb_sched_priority_master;
@@GLOBAL.innodb_sched_priority_master
19
SET GLOBAL innodb_sched_priority_master=5;
SELECT @@GLOBAL.innodb_sched_priority_master;
@@GLOBAL.innodb_sched_priority_master
5
SET GLOBAL innodb_sched_priority_master=0;
SELECT @@GLOBAL.innodb_sched_priority_master;
@@GLOBAL.innodb_sched_priority_master
0
SET GLOBAL innodb_sched_priority_master=-1;
Warnings:
Warning	1292	Truncated incorrect innodb_sched_priority_master value: '-1'
SELECT @@GLOBAL.innodb_sched_priority_master;
@@GLOBAL.innodb_sched_priority_master
0
SET GLOBAL innodb_sched_priority_master=1.1;
ERROR 42000: Incorrect argument type to variable 'innodb_sched_priority_master'
SET GLOBAL innodb_sched_priority_master=1e1;
ERROR 42000: Incorrect argument type to variable 'innodb_sched_priority_master'
SET GLOBAL innodb_sched_priority_master='foo';
ERROR 42000: Incorrect argument type to variable 'innodb_sched_priority_master'