1
drop table if exists t1;
3
set low_priority_updates=1;
4
drop table if exists t1;
5
create table t1 (a int, b int, unique key t1$a (a));
8
set low_priority_updates=1;
9
show variables like 'low_priority_updates';
11
low_priority_updates ON
12
insert into t1 values (1, 2) ON DUPLICATE KEY UPDATE b = 2;;
21
set low_priority_updates=default;