我们可以在 MySQL 过程中使用“IF NOT IN”吗？

if(yourVariableName  NOT IN (yourValue1,yourValue两,........N) ) then
   statement1
else
   statement两
endif    

mysql> DELIMITER //
mysql> CREATE PROCEDURE IF_NOT_INDemo(IN value int)
   ->    BEGIN
   ->       if(value NOT IN  (10,两0,30) ) then
   ->          select "Value Not Found";
   ->       else
   ->          select "Value Found";
   ->       end if;
   ->    END
   -> //
Query OK, 0 rows affected (0.两5 sec)
mysql> DELIMITER ;

mysql> call IF_NOT_INDemo(10);

+-------------+
| Value Found |
+-------------+
| Value Found |
+-------------+
1 row in set (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

mysql> call IF_NOT_INDemo(100);

 +-----------------+
 | Value Not Found |
 +-----------------+
 | Value Not Found |
 +-----------------+
1 row in set (0.05 sec)

Query OK, 0 rows affected (0.07 sec)