SQL，缺少结尾，但是为什么呢? [英] SQL, missing end, but why?

问题描述

我的SQL过程有问题. MySQLWorkbench建议我错过第一个SET的结尾"，但不要错过第二个SET的结尾".我不知道为什么.

I have an issue with my SQL procedure. MySQLWorkbench advise me that it miss 'end' to my first SET, but not for the second. I don't know why.

DELIMITER $
drop procedure if exists pay10percent$
create procedure pay10percent(IN montant decimal(9,2),IN idResa INT(5))
begin
declare circuitid INT;
SET circuitid = (
            SELECT IDCIRCUIT  
            FROM RESERVATION 
            WHERE IDRESERVATION=idResa
            );
declare montantCircuit decimal(9,2);
SET montantCircuit = (SELECT PRIX FROM CIRCUIT WHERE IDCIRCUIT=circuitid);
end;
$
DELIMITER ;

谢谢.

推荐答案

使用SET之前必须声明所有变量.或者，您可以删除SET并将该子查询用作默认值:

You must declare all the variables before using SET. Alternatively, you can drop SET and use that subquery as a default value:

declare circuitid INT DEFAULT (
    SELECT IDCIRCUIT  
    FROM RESERVATION 
    WHERE IDRESERVATION=idResa
);

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