SQLɾ³ýÖ¸¶¨×Ö¶ÎÎÊÌâ
¸üÐÂÏÂÎÊÌ⣺
񡜧TBL_Info
×ֶΣº
infoId int
title varchar(20)
Content text
byUser varchar(20)
createTime datetime
1¡¢ÈçºÎɾ³ý±íÖÐÊý¾ÝÏàͬµÄÊý¾ÝÄØ£¿£¨Ö÷¼ü³ýÍ⣩
2¡¢ÈçºÎɾ³ýÊý¾Ý±íÖÐij¸ö×Ö¶ÎÊý¾ÝÏàͬµÄÊý¾ÝÄØ(±ÈÈçtitle£ºÉ¾³ýËùÓÐtitleÏàͬµÄÊý¾Ý)£¿
3¡¢ÈçºÎͳ¼Æ±íÖÐtitleÏàͬÊý¾ÝµÄÊýÄ¿£¿
--1
--1.1Ïàͬʱ±£Áô×îСµÄinfoId
delete TBL_Info from TBL_Info t where infoId not in (select min(id) from infoId where title = t.title and Content = t.Content and byUser = t.byUser and createTime = t.createTime)
--1.1Ïàͬʱ±£Áô×î´óµÄinfoId
delete TBL_Info from TBL_Info t where infoId not in (select max(id) from infoId where title = t.title and Content = t.Content and byUser = t.byUser and createTime = t.createTime)
--2
delete from TBL_Info where title in (select title from TBL_Info group by title having count(1) > 1)
--3
select title , count(1) from TBL_Info group by title
select title , count(*) from TBL_Info group by title
select title , count(title) from TBL_Info group by title
--¹¦ÄܸÅÊö:ɾ³ýÖØ¸´¼Ç¼
ÔÚ¼¸Ç§Ìõ¼Ç¼Àï,´æÔÚ×ÅЩÏàͬµÄ¼Ç¼,ÈçºÎÄÜÓÃSQLÓï¾ä,ɾ³ýµôÖØ¸´µÄÄØ?лл!
1¡¢²éÕÒ±íÖжàÓàµÄÖØ¸´¼Ç¼£¬Öظ´¼Ç¼ÊǸù¾Ýµ¥¸ö×ֶΣ¨peopleId£©À´ÅжÏ
select * from people
where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)
2¡¢É¾³ý±íÖжàÓàµÄÖØ¸´¼Ç¼£¬Öظ´¼Ç¼ÊǸù¾Ýµ¥¸ö×ֶΣ¨peopleId£©À´Åжϣ¬Ö»ÁôÓÐrowid×îСµÄ¼Ç¼
delete from people
where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1)
and rowid not in (select min(rowid) from people group by peopleId having count(peopleId )>1)
3¡¢²éÕÒ±íÖжàÓàµÄÖØ¸´¼Ç¼£¨¶à¸ö×ֶΣ©
select * from vitae a
where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)
4¡¢É¾³ý±íÖж
Ïà¹ØÎĵµ£º
set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go
ALTER function [dbo].[Get_StrArrayStrOfIndex]
(
@str varchar(1024), --Òª·Ö¸îµÄ×Ö·û´®
@split varchar(10), --·Ö¸ô·ûºÅ
@index int --È¡µÚ¼¸¸öÔªËØ
)
returns varchar(1024)
as
begin
declare @location int
de ......
Select CONVERT(varchar(100), GETDATE(), 0): 05 16 2006 10:57AM
Select CONVERT(varchar(100), GETDATE(), 1): 05/16/06
Select CONVERT(varchar(100), GETDATE(), 2): 06.05.16
Select CONVERT(varchar(100), GETDATE(), 3): 16/05/06
Select CONVERT(varchar(100), GETDATE(), 4): 16.05.06
Select CONVERT(varch ......
create PROC [dbo].[P_viewPage_A]
/*
¸ßЧͨÓ÷ÖÒ³´æ´¢¹ý³Ì(Ë«Ïò¼ìË÷)
¾´¸æ£ºÊÊÓÃÓÚµ¥Ò»Ö÷¼ü»ò´æÔÚΨһֵÁеıí»òÊÓͼ
ps:SqlÓï¾äΪ8000×Ö½Ú,µ÷ÓÃʱÇë×¢Òâ´«Èë²ÎÊý¼°sql×ܳ¤¶È²»Òª³¬¹ýÖ¸¶¨·¶Î§
*/
@TableName VARCHAR(200), --±íÃû
@FieldList VARCHAR(2000), --ÏÔʾÁÐà ......
´æ´¢½ø³Ì¾ÍÊÇ×÷Ϊ¿ÉÖ´ÐжÔÏó´æ·ÅÔÚÊý¾Ý¿âÖеÄÒ»¸ö»ò¶à¸öSQLÃüÁî¡£
¶¨Òå×ÜÊǺܳéÏó¡£´æ´¢½ø³ÌÆäʵ¾ÍÊÇÄÜÍê³ÉÒ»¶¨²Ù×÷µÄÒ»×éSQLÓï¾ä£¬Ö»²»¹ýÕâ×éÓï¾äÊÇ·ÅÔÚÊý¾Ý¿âÖеÄ(ÕâÀïÎÒÃÇ̸ֻSQL SERVER)¡£Èç¹ûÎÒÃÇͨ¹ý´´½¨´æ´¢½ø³ÌÒÔ¼°ÔÚASPÖе÷Óô洢½ø³Ì£¬¾Í¿ÉÒÔ±ÜÃ⽫SQLÓï¾äͬASP´úÂë»ìÔÓÔÚÒ»Æð¡£ÕâÑù×öµÄºÃ´¦ÖÁÉÙÓÐÈý¸ö£º
µÚÒ»¡ ......