以3分钟为步骤插入时间戳值

时间:2012-10-09 13:53:52

标签: mysql

我想将3分钟步骤的时间戳值(给定开始日期和结束日期)插入到只有一个时间戳列的表中。

我目前从sql server切换到mysql。我知道如何在SQL中使用以前的数据库,但我不确定后者。感谢。

这是我当前(不工作)悲惨的尝试:

DELIMITER //
CREATE PROCEDURE test()
begin
    declare StartTS TIMESTAMP DEFAULT null;
    declare EndTS TIMESTAMP DEFAULT null;

    set StartTS = '2012-01-01 00:00:00';
    set EndTS = '2014-01-01 00:00:00';

    start transaction;
      while StartTS < EndTS do
        insert into timestamps (TimeStampEntry) values (StartTS);
        SET StartTS  = StartTS  + INTERVAL 3 MINUTE;
      end while;
      commit;
end
//

DELIMITER ;

call test();

PS:

create table TimeStamps (
        Id INTEGER NOT NULL AUTO_INCREMENT,
       TimeStampEntry DATETIME,
       primary key (Id)
    )

当前的sproc:

DELIMITER $$

CREATE DEFINER=`root`@`localhost` PROCEDURE `myProc`(IN t1 timestamp, IN t2 timestamp)
BEGIN

  WHILE t1 <= t2 DO
INSERT INTO timestamps (TimeStampEntry) Values (t1)  ;
    SET t1 = DATE_ADD(t1, INTERVAL 180 SECOND);
    #SET t1 = t1 + INTERVAL 180 SECOND;
  END WHILE;
END

呼叫:

CALL myProc('2010-01-01 00:00:00', '2014-01-01 00:00:00');

1 个答案:

答案 0 :(得分:3)

尝试这样的事情:

CREATE PROCEDURE myProc(IN t1 timestamp, IN t2 timestamp)
BEGIN

  WHILE t1 <= t2 DO
INSERT INTO test (ts) Values (t1)  ;
    SET t1 = DATE_ADD(t1, INTERVAL 3 MINUTE);
  END WHILE;
END;


CALL myProc(now(), ADDDATE(NOW(), INTERVAL 15 MINUTE));

http://sqlfiddle.com/#!2/5672e/9

或者改变你的行:

SET StartTS  = StartTS  + INTERVAL 3 MINUTE;

SET StartTS  = ADDDATE(StartTS, INTERVAL 3 MINUTE);