MySQL 表示 : #1336 - Dynamic SQL is not allowed in stored function or trigger

Question

This is main question please help me for this

这是我的代码:

BEGIN   

DECLARE TMPCOL VARCHAR(100);

SET TMPCOL= 'ID';   

SET @s = CONCAT('INSERT INTO TMP(DATA1, DATA2) VALUES ("DATA",OLD.',TMPCOL,');');  

PREPARE stmt1 FROM @s;    

EXECUTE stmt1;   

DEALLOCATE PREPARE stmt1;  

END

Answer 1

您不需要动态 SQL。这实际上是相同的:

BEGIN   
    INSERT INTO TMP (DATA1, DATA2)
        VALUES ('DATA', OLD.ID);
END;

这应该在触发器中起作用。否则，old 未定义。