Sql查询获取日期时间范围

Question

您好我正在尝试编写查询，但我不确定如何执行此操作。这是一个场景，我想带回在特定时间开始前30分钟和之后2小时插入数据库的记录。这是我的查询的样子;

SELECT  Comment.AddDate,Event.StartTime
FROM Comment
JOIN Users on Users.USERS_ID  = Comment.UserID
JOIN Event ON Users.USERS_ID = Event.UserID
WHERE EventID = 5630

现在从上面我需要在Event.StartTime前30分钟和2小时后输入Comment.AddDate的记录。我该怎么做呢？

Answer 1

SELECT Comment.AddDate, Event.StartTime
  FROM Comment
  JOIN Users ON Users.USERS_ID = Comment.UserID
  JOIN Event ON Users.USERS_ID = Event.UserID
 WHERE EventID = 5630
   AND Comment.AddDate BETWEEN DATEADD(minute, -30, Event.StartTime)
       AND DATEADD(hour, 2, Event.StartTime)

位于here的文档。