錯誤在SQL查詢

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我需要有人來幫助我，使我的SQL查詢中發現的錯誤：錯誤在SQL查詢

CREATE PROCEDURE confirm(IN bookingID INT, OUT status VARCHAR(40)) 
BEGIN 
DECLARE numberOfPass INT; 
DECLARE contactStatus VARCHAR(30); 
SET numberOfPass = (SELECT count(*) FROM passenger WHERE passenger.Booking = bookingID); 
SET contactStatus = (SELECT contact FROM booking WHERE booking.Id = bookingID); 
IF numberOfPass <> (SELECT numberOfSeats FROM booking WHERE booking.Id = bookingID)) THEN SET status = "Passenger information missing"; 
ELSE IF ISNULL(contactStatus) THEN SET status ="Contact missing for booking"; 
ELSE SET status = "OK"; 
END IF; 
END;

我收到以下錯誤信息：

ERROR 1064（42000）：你有你的SQL語法錯誤;請檢查手冊，該手冊對應於您的MySQL服務器版本右邊的語法，以便在''附近使用'）THEN SET status =「乘客信息失蹤」; ELSE IF ISNULL（contactStatu」在第7行

這可能是什麼錯誤？提前

感謝。

來源

2013-01-11 mrjasmin

你在

IF numberOfPass <> (SELECT numberOfSeats FROM booking WHERE booking.Id = bookingID))

來源

2013-01-11 16:39:48

得到了一個額外的括號使用ELSEIF
刪除額外的括號

完整的查詢，

DELIMITER $$ 
CREATE PROCEDURE confirm(IN bookingID INT, OUT status VARCHAR(40)) 
BEGIN 
    DECLARE numberOfPass INT; 
    DECLARE contactStatus VARCHAR(30); 
    SET numberOfPass = (SELECT count(*) FROM passenger WHERE passenger.Booking = bookingID); 
    SET contactStatus = (SELECT contact FROM booking WHERE booking.Id = bookingID); 
    IF numberOfPass <> (SELECT numberOfSeats FROM booking WHERE booking.Id = bookingID) THEN 
     SET status = "Passenger information missing"; 
    ELSEIF ISNULL(contactStatus) THEN 
     SET status ="Contact missing for booking"; 
    ELSE 
     SET status = "OK"; 
    END IF; 
END $$ 
DELIMITER ;

See IF Syntax ^{MySQL Doc}

來源

2013-01-11 16:40:09

非常感謝你，我不知道我應該使用ELSEIF。 – mrjasmin

不客氣'：D' –

額外）在我們的代碼...

                    !!! 
IF numberOfPass <> (SELECT numberOfSeats FROM booking WHERE booking.Id = bookingID))

來源

2013-01-11 16:43:13 sourcecode

錯誤在SQL查詢

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