mysql
<code> DELIMITER $$ USE mysql$$DROP PROCEDURE IF EXISTS demo$$CREATE PROCEDURE demo(_id INT, _content VARCHAR(64)) BEGIN SET @id = _id; SET @content = _content; PREPARE stmt FROM "INSERT INTO blog (id, content) VALUES(?, ?)"; EXECUTE stmt USING @id, @content; DEALLOCATE PREPARE stmt;END$$DELIMITER ;DELIMITER $$</code>
如果改写成如下就会报错：
<code> DELIMITER $$USE mysql$$DROP PROCEDURE IF EXISTS demo$$CREATE PROCEDURE demo(_id INT, _content VARCHAR(64)) BEGIN -- set @id = _id; -- set @content = _content; PREPARE stmt FROM "INSERT INTO blog (id, content) VALUES(?, ?)"; EXECUTE stmt USING _id, _content; DEALLOCATE PREPARE stmt;END$$DELIMITER ;</code>
<code> 错误代码： 1064You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '_id, _content; DEALLOCATE PREPARE stmt;END' at line 7</code>
