t-sql获取2个日期之间的所有日期 [英] t-sql get all dates between 2 dates
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问题描述
可能重复:
在日期范围之间获取日期
假设我有2个日期(仅限日期部分,没有时间),我想在这两个日期之间取得所有日期,并将其插入表格。有没有一个简单的方法来做一个SQL语句(即没有循环)?
Let's say I have 2 dates (date part only, no time) and I want to get all dates between these 2 dates inclusive and insert them in a table. Is there an easy way to do it with a SQL statement (i.e without looping)?
Ex:
Date1: 2010-12-01
Date2: 2010-12-04
Table should have following dates:
2010-12-01, 2010-12-02, 2010-12-03, 2010-12-04
推荐答案
假设SQL Server 2005 +,使用递归查询:
Assuming SQL Server 2005+, use a recursive query:
WITH sample AS (
SELECT CAST('2010-12-01' AS DATETIME) AS dt
UNION ALL
SELECT DATEADD(dd, 1, dt)
FROM sample s
WHERE DATEADD(dd, 1, dt) <= CAST('2010-12-04' AS DATETIME))
SELECT *
FROM sample
返回:
Returns:
dt
---------
2010-12-01 00:00:00.000
2010-12-02 00:00:00.000
2010-12-03 00:00:00.000
2010-12-04 00:00:00.000
使用 CAST / CONVERT to for垫,你喜欢。
INSERT INTO dbo.YOUR_TABLE
(datetime_column)
WITH sample AS (
SELECT @start_date AS dt
UNION ALL
SELECT DATEADD(dd, 1, dt)
FROM sample s
WHERE DATEADD(dd, 1, dt) <= @end_date)
SELECT s.dt
FROM sample s
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