如何使用Microsoft SQL Server 2008獲取日期比當天日期大6個月的所有記錄？

Question

我有一個帶有lastDelivery日期字段的表，我想檢索比今天的日期早6個月或更多的所有記錄，我該怎麼做？

Answer 1

試試這個：

SELECT * FROM Table 
WHERE lastdelivery <= dateadd(month, -6, getdate()) 

Answer 2

  DECLARE @subscriptions TABLE 
      (
       OrderId int, 
       OrderName varchar(255), 
       lastDelivery date default getdate() 
      ) 

      INSERT INTO @subscriptions (OrderName, lastDelivery) 
      VALUES 
      ('Allen', '2015-05-20'), 
      ('Bob', '2015-06-20'), 
      ('Craig', '2015-07-20'), 
      ('David', '2015-08-20'), 
      ('Edward', '2015-09-20'), 
      ('Frank', '2015-10-20'), 
      ('George', '2015-11-20'), 
      ('Harry', '2015-12-20') 

      SELECT OrderName FROM @subscriptions 
      WHERE lastDelivery <= DATEADD(MONTH, -6, GETDATE()) 

Answer 3

使用DATEADD

查詢

select * from your_table_name 
where lastDelivery <= dateadd(month, -6, getdate());