MSSQL - 存储过程取出5条热点新闻

USE [DB_News]

GO

/****** Object:  StoredProcedure [dbo].[SelectHotNews]    Script Date: 2015/7/8 13:34:46 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

-- =============================================

-- Author:		HF_Ultrastrong

-- Create date: 2015年7月5日16:40:20

-- Description:	取出10条热点新闻 （热点新闻：评论最多）

-- =============================================

ALTER PROCEDURE [dbo].[SelectHotNews]

AS

BEGIN

	select top 5 n.ID, n.Title, n.CreateTime, c.Name, count(t.ID) as CountNumber

	from Tb_News as n

	inner join Tb_Category as c on n.CaId = c.ID

	--用左连接，这样可以查询出评论为0的新闻

	left join Tb_Comment as t on t.NewsId = n.ID

	group by n.ID, n.Title, n.CreateTime, c.Name

	order by CountNumber desc

END

 

其中涉及到三张表，分类表，新闻表，评论表。

 

最终取出效果：