在MySQL存储过程中设置条件

要在存储过程中设置条件，请在MySQL中使用IF...ELSE。以下是if-else的语法-

IF yourCondition then yourStatement1, ELSE yourStatement2, END IF;

让我们在存储过程中实现上述语法-

DELIMITER // CREATE PROCEDURE IF_ELSE_DEMO(IN value int) -> BEGIN -> SET @val=value; -> IF @val > 10 then -> select concat(@val, is greater than 10); -> ELSE -> select concat(@val, is less than 10 ); -> END IF; -> END; -> //DELIMITER ;

现在您可以使用CALL命令调用存储过程-

call IF_ELSE_DEMO(18);

这将产生以下输出-

+------------------------------------+ | concat(@val, is greater than 10) | +------------------------------------+ | 18 is greater than 10 | +------------------------------------+ 1 row in set (0.03 sec)