使用查询SQL Server 2005选择DATEADD分钟

Question

SELECT
   [NAMENO],
   [FIRSTNAME],
   [MIDNAME],
   [LASTNAME],
   [SEX],
   [STATUSOF],
   [RELEASEDT],
   CONVERT(VARCHAR(10), DOBDT, 101) AS DOBDT 
FROM
   database
WHERE 
   ReleaseDT >= dateadd(minute,datediff(minute,60,GETDATE()),0)
   AND ReleaseDT < dateadd(minute,datediff(minute,0,GETDATE()),0)

I am wanting to get anyone that has a "releasedt" in the past 60 mins if that makes of sense? right now its pull the last 60 days..

Any suggestions??

Answer 1

It's just:

where ReleaseDT >= dateadd(minute, -60, getdate())
and ReleaseDT <= getdate()

Nesting dateadd and datediff (like you did in your code in the question) is not necessary.
In fact, datediff calculates the difference (in hours, minutes...whatever) between two datetime values, so you don't need it at all when you just want to get "now minus 60 minutes".