将 Int 转换为日期字段 [英] Convert an Int to a date field

问题描述

我正在尝试将整数字段转换为实际日期字段.有人创建了一个日期"字段，它只是插入一个实际上是一个整数的日期".我正在尝试将其转换为实际日期.

I'm trying to convert an integer field to an actual date field. Someone created a "date" field that just sticks in a "date" that is actually an integer. I'm trying to convert it to an actual date.

我尝试了以下方法无济于事:

I have tried the following to no avail:

CAST(CAST(last_purch_date AS CHAR) AS DATE) as Create,
CAST( last_purch_date as datetime) as Created,
convert(datetime,last_purch_date) as Created1,
ISDATE(CONVERT(CHAR(8),last_purch_date)) as PleaseDearGodWORK

推荐答案

Simple cast as date 可以工作

Simple cast as date could work

Select cast(cast(20161011 as varchar(8)) as date)

退货

2016-10-11

如果您的数据可疑，您也可以使用 Try_Convert()

If your data is suspect, you could also use Try_Convert()

Select Try_Convert(date,cast(2610 as varchar(8)))

退货

NULL

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