mysql存储过程语法错误与日期

时间:2009-07-03 13:23:06

标签: mysql stored-procedures

您好,我很乐意尝试在MySQL中正确解析存储过程。

我的问题是约会。我试图让商店程序创建一个开始日期,即当月的开始日期,例如2009-07-01。使用这个日期我然后使用DATA_ADD()函数添加一个月,使其显示为2009-08-01。

但是我的问题是,当我尝试运行procdure来创建它时,我收到以下错误:

Script line: 7  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 'DECLARE 
cur_month INT;
SET cur_month = (SELECT MONTH(CURRENT_DATE()));

商店程序的代码如下所示:

DROP PROCEDURE IF EXISTS sp_test;

DELIMITER //

CREATE PROCEDURE sp_test()
BEGIN

  /*we work out the start and end dates*/
  DECLARE cur_year INT;
  SET cur_year = (SELECT YEAR(CURRENT_DATE()));

  DECLARE cur_month INT;
  SET cur_month = (SELECT MONTH(CURRENT_DATE()));


  DECLARE temp_date VARCHAR(10);
  SET temp_date = (SELECT CONCAT(cur_year,'-',cur_month,'-01'));

  DECLARE start_date DATE;
  SET start_date = (SELECT CAST(temp_date AS DATE)));

  DECLARE end_date DATE;
  SET end_date = (SELECT DATE_ADD(start_date, INTERVAL 1 MONTH));


  INSERT INTO my_table (startdate, enddate)VALUES(start_date, end_date);

 END; //

DELIMITER ;

我独立运行查询并且它们都返回正确的值并正常工作,当我将它们添加到存储过程时,它只会因语法错误而失败。

我在这里错过了什么导致我的头疼?

...谢谢

3 个答案:

答案 0 :(得分:2)

您需要在BEGIN - END块的开头DECLARE所有变量。您的CAST行中也有不匹配的括号(额外收盘价)。以下应该有效:

DROP PROCEDURE IF EXISTS sp_test;

DELIMITER //

CREATE PROCEDURE sp_test()
BEGIN

  /*we work out the start and end dates*/
  DECLARE cur_year INT;
  DECLARE cur_month INT;
  DECLARE temp_date VARCHAR(10);
  DECLARE start_date DATE;
  DECLARE end_date DATE;

  SET cur_year = (SELECT YEAR(CURRENT_DATE()));

  SET cur_month = (SELECT MONTH(CURRENT_DATE()));

  SET temp_date = (SELECT CONCAT(cur_year,'-',cur_month,'-01'));
  SET start_date = (SELECT CAST(temp_date AS DATE));

  SET end_date = (SELECT DATE_ADD(start_date, INTERVAL 1 MONTH));
  INSERT INTO my_table (startdate, enddate)VALUES(start_date, end_date);


 END; //

DELIMITER ;

答案 1 :(得分:0)

我已经尝试过你的例子,它适用于我的MySQL 5.0.32:

delimiter //
CREATE PROCEDURE sp_test()
BEGIN
  DECLARE cur_year INT;
  SET cur_year = (SELECT YEAR(CURRENT_DATE()));
  INSERT INTO tt (y) VALUES (cur_year);
END; //
delimiter ;

CREATE TABLE tt (y INT);
CALL sp_test();
Query OK, 1 row affected (0.00 sec)

您可以尝试将SET重写为

SELECT YEAR(CURRENT_DATE()) INTO cur_year;

会起作用吗?你的MySQL版本是什么?..

答案 2 :(得分:0)

在开始为它们赋值之前,你必须声明所有变量,以下代码似乎对我有用:

`DELIMITER $$

DROP PROCEDURE IF EXISTS test.sp_test $$ CREATE PROCEDURE test.sp_test() BEGIN

/ 我们计算出开始和结束日期 /   DECLARE cur_year INT;   DECLARE cur_month INT;   DECLARE temp_date VARCHAR(10);   DECLARE start_date DATE;   DECLARE end_date DATE;

SET cur_year =(SELECT YEAR(CURRENT_DATE()));

SET cur_month =(SELECT MONTH(CURRENT_DATE()));

SET temp_date =(SELECT CONCAT(cur_year,' - ',cur_month,' - 01'));

SET start_date =(SELECT CAST(temp_date AS DATE));

SET end_date =(SELECT DATE_ADD(start_date,INTERVAL 1 MONTH));

INSERT INTO alex.my_table(startdate,enddate)VALUES(start_date,end_date);

END $$

DELIMITER;`