我在使用MySQL工具编写MySQL存储过程的时候,明明语法正确,但是却一直提示You have an error in your SQL syntax。
比如下面一段代码
1 CREATE PROCEDURE demo_pro() 2 BEGIN 3 DECLARE doned BOOLEAN; 4 DECLARE addr varchar(20); 5 DECLARE demo_cur CURSOR FOR SELECT detail from address; 6 DECLARE CONTINUE HANDLER FOR NOT FOUND SET doned = True; 7 SET doned = False; 8 OPEN demo_cur; 9 demo_cur:LOOP 10 FETCH demo_cur into addr; 11 IF doned THEN 12 LEAVE demo_cur; 13 ELSE 14 insert into demo(demo_value) values(addr); 15 END IF; 16 END LOOP; 17 CLOSE demo_cur; 18 END;
找了半天才找到解决方案,原来不是语法的错误，是MYSQL语法解析器的原因。MYSQL 解析器解析遇到“;”分号，就结束本次执行，所以就造成了很多语法错误。解决方案是:
1 DELIMITER | #结束符号,可以根据自己的需求,改成 $也可以 2 CREATE PROCEDURE demo_pro() 3 BEGIN 4 DECLARE doned BOOLEAN; 5 DECLARE addr varchar(20); 6 DECLARE demo_cur CURSOR FOR SELECT detail from address; 7 DECLARE CONTINUE HANDLER FOR NOT FOUND SET doned = True; 8 SET doned = False; 9 OPEN demo_cur; 10 demo_cur:LOOP 11 FETCH demo_cur into addr; 12 IF doned THEN 13 LEAVE demo_cur; 14 ELSE 15 insert into demo(demo_value) values(addr); 16 END IF; 17 END LOOP; 18 CLOSE demo_cur; 19 END;| 20 DELIMITER ;