[英]MySQL syntax error on FUNCTION creation
數小時以來,我一直在尋找錯誤,但一無所獲。 所以這是我的功能:
DELIMITER //
DROP FUNCTION IF EXISTS func_name//
CREATE FUNCTION func_name(_num_client INT) RETURNS VARCHAR(20)
BEGIN
DECLARE n_titul VARCHAR(20) DEFAULT NULL;
SET n_titul = (SELECT UPPER(
IF(
length(concat_ws(' ', civilite, prenom, nom)),
IF(
length(concat_ws(' ', civilite, concat(substring(prenom, 1, 1), '.'), nom)),
substring(concat_ws(' ', civilite, concat(substring(prenom, 1, 1), '.'), nom), 1, 20),
concat_ws(' ', civilite, concat(substring(prenom, 1, 1), '.'), nom)
),
concat_ws(' ', civilite, prenom, nom)
)
) FROM client WHERE num_client=_num_client) ;
RETURN n_titul;
END;
//
我得到這個回應:
ERROR: Punctuation invalid @ 637 STR: // SQL: { HERE THE RESQUEST ABOVE }
#1064 - 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 '//' at line 17
DELIMITER //
DROP FUNCTION IF EXISTS func_name//
CREATE FUNCTION func_name(_num_client INT) RETURNS VARCHAR(20)
BEGIN
DECLARE n_titul VARCHAR(20) DEFAULT NULL;
SET n_titul = (SELECT UPPER(
IF(
length(concat_ws(' ', civilite, prenom, nom)),
IF(
length(concat_ws(' ', civilite, concat(substring(prenom, 1, 1), '.'), nom)),
substring(concat_ws(' ', civilite, concat(substring(prenom, 1, 1), '.'), nom), 1, 20),
concat_ws(' ', civilite, concat(substring(prenom, 1, 1), '.'), nom)
),
concat_ws(' ', civilite, prenom, nom)
)
) FROM client WHERE num_client=_num_client) ;
RETURN n_titul;
END//
DELIMITER ;
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