「COUNT（*）」附近的語法錯誤？

我想要做一個互動的存儲過程我的意思是，在執行後用戶應輸入一個字「COUNT（*）」附近的語法錯誤？

我寫了這一點，但它不工作..

DELIMITER $$ 

DROP PROCEDURE IF EXISTS ric_forn$$ 
CREATE PROCEDURE ric_forn (IN nome_forn VARCHAR(100) , OUT msg VARCHAR(100)) 
BEGIN 
DECLARE num_rec INT; 

IF (nome_forn = '') THEN 
    SET msg = "Attenzione il nome inserito non è valido !"; 
END IF; 

SELECT COUNT (*) INTO num_rec FROM Fornitori WHERE Des_Fornitore = nome_forn; 

IF num_rec = 0 THEN 
    SET msg = "Nessun record trovato !"; 

ELSE 

SELECT Id_Fornitore,Des_Fornitore,Ind_Fornitore WHERE Des_Fornitore = nome_forn; 
    SET msg = "Records trovati:"; 

END IF; 

END$$ 

DELIMITER ;

我得到這個錯誤：

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '*) INTO num_rec FROM Fornitori WHERE Des_Fornitore = nome_forn;

來源

2011-09-22 Roberto

嗯，確實'SELECT COUNT（*）INTO num_rec FROM Fornitori WHERE Des_Fornitore = nome_forn;'從CLI工作？ – 2011-09-22 21:42:42

我是一個初學者..你是什麼意思的CLI？...謝謝 – Roberto

好的抱歉，你的意思是從外殼..即使我註釋掉這一行東西不順利無論如何.. – Roberto

的空間和(*)之間COUNT是顯著。你應該把它們放在一起，不要留下空間。

SELECT COUNT(*) INTO ...

例外是如果你SET SQL_MODE='IGNORE_SPACE'。閱讀Function Name Parsing and Resolution瞭解更多詳情。

你其他錯誤是，你忘了FROM子句中的查詢之一：

SELECT Id_Fornitore,Des_Fornitore,Ind_Fornitore WHERE Des_Fornitore = nome_forn;

應該是：

SELECT Id_Fornitore,Des_Fornitore,Ind_Fornitore FROM Fornitori 
WHERE Des_Fornitore = nome_forn;

來源

2011-09-22 21:52:28

我刪除了你所說的空間,,現在我得到了一個不同的錯誤，指向 - > WHERE Des_Fornitore = nome_forn; SET msg =「記錄trovati：」; 謝謝 – Roberto

「COUNT（*）」附近的語法錯誤？

回答

相關問題