SELECT @@MAX_STATEMENT_TIME;
@@MAX_STATEMENT_TIME
0.000000
SET STATEMENT MAX_STATEMENT_TIME=2 FOR SELECT SLEEP(1);
SLEEP(1)
0
SHOW STATUS LIKE "max_statement_time_exceeded";
Variable_name	Value
Max_statement_time_exceeded	0
SET STATEMENT MAX_STATEMENT_TIME=2 FOR SELECT SLEEP(3);
SLEEP(3)
1
SHOW STATUS LIKE "max_statement_time_exceeded";
Variable_name	Value
Max_statement_time_exceeded	1
SELECT @@MAX_STATEMENT_TIME;
@@MAX_STATEMENT_TIME
0.000000