急求一条存储过程或sql语句马上结贴

2010-06-05 09:41:02 84 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

bulenghai 墨衍会员 · AI 创作全网分发关注 + 加入社区

步进电机步进电机阅读详情

问题是这样：我的新闻页里面要展示五天的新闻，其中每天的展示5条。参数只传今天的时间。请问一条sql语句如何实现？

...全文

idea 编译打包nacos2.0.3源码，生成可执行jar 包常见问题 idea 编译打包nacos2.0.3源码，生成可执行jar 包常见问题阅读详情

bulenghai

疑难问题 22,298 成员 121,727 内容

+ 关注 + 加入社区

切换为时间正序

luoyoumou 2010-06-05

打赏
举报

drop table news_tb;



create table news_tb(

nid int,             -- 新闻ID

title varchar(1000), -- 新闻标题

contents text,        -- 新闻内容

cdate datetime       -- 创建日期

)



INSERT INTO news_tb(nid,title,contents,cdate)

SELECT 

1,'你究竟有几个好妹妹','我有几个好妹妹呢？......','2010-05-30' UNION ALL SELECT

2,'富土康的跳楼内幕','众所周知,.....','2010-05-31' UNION ALL SELECT

3,'天上人间到底是在天上还是在人间？','众所周知,.....','2010-05-31' UNION ALL SELECT

4,'论富土康的12跳','众所周知,.....','2010-05-31' UNION ALL SELECT

5,'论富土康的13跳','众所周知,.....','2010-05-31' UNION ALL SELECT

6,'论富土康的14跳','众所周知,.....','2010-05-31' UNION ALL SELECT

7,'论富土康的15跳','众所周知,.....','2010-05-31' UNION ALL SELECT

8,'论富土康的16跳','众所周知,.....','2010-05-31' UNION ALL SELECT

9,'论富土康的17跳','众所周知,.....','2010-05-31' UNION ALL SELECT

10,'论富土康的18跳','众所周知,.....','2010-06-01' UNION ALL SELECT

11,'论富土康的19跳','众所周知,.....','2010-06-01' UNION ALL SELECT

12,'论富土康的20跳','众所周知,.....','2010-06-01' UNION ALL SELECT

13,'论富土康的21跳','众所周知,.....','2010-06-01' UNION ALL SELECT

14,'论富土康的22跳','众所周知,.....','2010-06-02' UNION ALL SELECT

15,'论富土康的23跳','众所周知,.....','2010-06-02' UNION ALL SELECT

16,'论富土康的24跳','众所周知,.....','2010-06-02' UNION ALL SELECT

17,'论富土康的25跳','众所周知,.....','2010-06-03' UNION ALL SELECT

18,'论富土康的26跳','众所周知,.....','2010-06-03' UNION ALL SELECT

19,'论富土康的27跳','众所周知,.....','2010-06-03' UNION ALL SELECT

20,'论富土康的28跳','众所周知,.....','2010-06-03' UNION ALL SELECT

21,'论富土康的29跳','众所周知,.....','2010-06-04' UNION ALL SELECT

22,'论富土康的30跳','众所周知,.....','2010-06-04' UNION ALL SELECT

23,'论富土康的31跳','众所周知,.....','2010-06-05' UNION ALL SELECT

24,'论富土康的32跳','众所周知,.....','2010-06-05' UNION ALL SELECT

25,'论富土康的33跳','众所周知,.....','2010-06-05' UNION ALL SELECT

26,'论富土康的34跳','众所周知,.....','2010-06-05' UNION ALL SELECT

27,'好消息：富土康的员工已全部跳楼身亡!!!','众所周知,.....','2010-06-05';







CREATE PROCEDURE news_first5_pDay

AS

BEGIN

  SELECT rcn, title, contents, cdate

  FROM (SELECT row_number() over(partition by convert(varchar(10),cdate,120) ORDER BY cdate ) rcn,

               title, contents, cdate

		  FROM news_tb

		 WHERE cdate >= convert(varchar(10),(getdate()-5),120) ) t

  WHERE t.rcn<=5;



END;





EXEC news_first5_pDay;

beirut012 2010-06-05

打赏
举报





---------------------------------

-- Author: liangCK 小梁

-- Title : 查每个分组前N条记录

-- Date : 2008-11-13 17:19:23

---------------------------------



--> 生成测试数据: #T

IF OBJECT_ID('tempdb.dbo.#T') IS NOT NULL DROP TABLE #T

CREATE TABLE #T (ID VARCHAR(3),GID INT,Author VARCHAR(29),Title VARCHAR(39),Date DATETIME)

INSERT INTO #T

SELECT '001',1,'邹建','深入浅出SQLServer2005开发管理与应用实例','2008-05-10' UNION ALL

SELECT '002',1,'胡百敬','SQLServer2005性能调校','2008-03-22' UNION ALL

SELECT '003',1,'格罗夫Groff.J.R.','SQL完全手册','2009-07-01' UNION ALL

SELECT '004',1,'KalenDelaney','SQLServer2005技术内幕存储引擎','2008-08-01' UNION ALL

SELECT '005',2,'Alex.Kriegel.Boris.M.Trukhnov','SQL宝典','2007-10-05' UNION ALL

SELECT '006',2,'飞思科技产品研发中心','SQLServer2000高级管理与开发','2007-09-10' UNION ALL

SELECT '007',2,'胡百敬','SQLServer2005数据库开发详解','2008-06-15' UNION ALL

SELECT '008',3,'陈浩奎','SQLServer2000存储过程与XML编程','2005-09-01' UNION ALL

SELECT '009',3,'赵松涛','SQLServer2005系统管理实录','2008-10-01' UNION ALL

SELECT '010',3,'黄占涛','SQL技术手册','2006-01-01'



--SQL查询如下:



--按GID分组,查每个分组中Date最新的前2条记录





--1.字段ID唯一时:

SELECT * FROM #T AS T WHERE ID IN(SELECT TOP 2 ID FROM #T WHERE GID=T.GID ORDER BY Date DESC)



--2.如果ID不唯一时:

SELECT * FROM #T AS T WHERE 2>(SELECT COUNT(*) FROM #T WHERE GID=T.GID AND Date>T.Date)



--SQL Server 2005 使用新方法



--3.使用ROW_NUMBER()进行排位分组

SELECT ID,GID,Author,Title,Date

FROM

(

   SELECT rid=ROW_NUMBER() OVER(PARTITION BY GID ORDER BY Date DESC),*

   FROM #T

) AS T

WHERE rid<=2



--4.使用APPLY

SELECT DISTINCT b.*

FROM #T AS a

CROSS APPLY

(

    SELECT TOP(2) * FROM #T WHERE a.GID=GID ORDER BY Date DESC

) AS b





--结果

/*



ID   GID         Author                        Title                                   Date

---- ----------- ----------------------------- --------------------------------------- -----------------------

003 1           格罗夫Groff.J.R.                 SQL完全手册                                 2009-07-01 00:00:00.000

004 1           KalenDelaney                  SQLServer2005技术内幕存储引擎                   2008-08-01 00:00:00.000

005 2           Alex.Kriegel.Boris.M.Trukhnov SQL宝典                                   2007-10-05 00:00:00.000

007 2           胡百敬                           SQLServer2005数据库开发详解                    2008-06-15 00:00:00.000

009 3           赵松涛                           SQLServer2005系统管理实录                     2008-10-01 00:00:00.000

010 3           黄占涛                           SQL技术手册                                 2006-01-01 00:00:00.000



(6 行受影响)

*/

hdh9988 2010-06-05

打赏
举报

表结构在哪里呀？

htl258_Tony 2010-06-05

打赏
举报

CREATE PROC p_test 

@dt DATETIME

AS

SELECT * 

FROM tb t

WHERE datecol IN (

	SELECT TOP 5 datecol 

	FROM tb

	WHERE DATEDIFF(dd, datecol, t.datecol) = 0

	)

	AND DATEDIFF(dd, datecol, @dt) BETWEEN 0 AND 4

GO

luoyoumou 2010-06-05

打赏
举报

-- 如有表：

news_tb(

nid int,             -- 新闻ID

title varchar(1000), -- 新闻标题

content text,        -- 新闻内容

cdate datetime       -- 创建日期

)



-- 每天的展示5条，这5条有什么取数规则没？

beirut012 2010-06-05

打赏
举报

Select *

FROM orders A

Where EXISTS

          (Select COUNT(1)

         FROM orders

         Where employeeid = A.employeeid AND orderid > A.orderid

         HAVING COUNT(1) < 5)

ORDER BY EmployeeID

急求一条存储过程或sql语句 马上结贴

相关推荐

急求一条存储过程或sql语句马上结贴