Using CASE WHEN condition statement in a procedure
mysql> mysql> delimiter $$ mysql> CREATE PROCEDURE myProc(id int) -> BEGIN -> -> CASE -> WHEN id < 2 THEN -> select 'less than 2'; -> -> WHEN id > 2 and id < 5 THEN -> select 'greater than 2 and less than 5'; -> -> WHEN id > 5 THEN -> select 'greater than 5'; -> -> END CASE; -> END$$ Query OK, 0 rows affected (0.00 sec)
mysql> mysql> delimiter ; mysql> call myProc(2); ERROR 1339 (20000): Case not found for CASE statement mysql> call myProc(20); +----------------+ | greater than 5 | +----------------+ | greater than 5 | +----------------+ 1 row in set (0.00 sec)