本文介绍了如何使用日期范围填充表格?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要一个 MySQL 表来保存 2011-01-01 和 2011-12-31 之间的所有日期.我创建了一个列名为_date"的表，键入 DATE.
I need a MySQL table to hold ALL DATES between 2011-01-01 and 2011-12-31. I have created a table with one column names "_date", type DATE.
我可以使用什么查询在表格中填充所有所需的日期(而不必手动输入)?
With what query can I populate the table with all the desired dates (instead of having to enter them by hand)?
推荐答案
试试这个:
DROP PROCEDURE IF EXISTS filldates;
DELIMITER |
CREATE PROCEDURE filldates(dateStart DATE, dateEnd DATE)
BEGIN
WHILE dateStart <= dateEnd DO
INSERT INTO tablename (_date) VALUES (dateStart);
SET dateStart = date_add(dateStart, INTERVAL 1 DAY);
END WHILE;
END;
|
DELIMITER ;
CALL filldates('2011-01-01','2011-12-31');
这是使用它的 SQL Fiddle:http://sqlfiddle.com/#!2/65d13/1
Here's the SQL Fiddle to play with it: http://sqlfiddle.com/#!2/65d13/1
按照 安德鲁·福克斯.
CREATE PROCEDURE filldates(dateStart DATE, dateEnd DATE)
BEGIN
DECLARE adate date;
WHILE dateStart <= dateEnd DO
SET adate = (SELECT mydate FROM MyDates WHERE mydate = dateStart);
IF adate IS NULL THEN BEGIN
INSERT INTO MyDates (mydate) VALUES (dateStart);
END; END IF;
SET dateStart = date_add(dateStart, INTERVAL 1 DAY);
END WHILE;
END;//
这里是使用它的 SQL Fiddle:http://sqlfiddle.com/#!2/66f86/1
Here's the SQL Fiddle to play with it: http://sqlfiddle.com/#!2/66f86/1
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