°´Ê±¼ä²éѯµÄSQLÓï¾ä
1¡¢°´Äê²éѯ£ºselect * from dbo.td_BBSBoardInfo where (year(BBI_DateTime) between 2006 and 2009)
°´Ô¡¢ÈÕ²éѯֻҪ½«year ¸ÄΪ month¡¢data
2¡¢°´ÄêÔ²éѯ£ºselect * from dbo.td_BBSBoardInfo where convert(varchar(6),BBI_DateTime,112) between 200606 and 200911
Ïà¹ØÎĵµ£º
create PROCEDURE pagelist
@tablename nvarchar(50),
@fieldname nvarchar(50)='*',
@pagesize int output,--ÿҳÏÔʾ¼Ç¼ÌõÊý
@currentpage int output,--µÚ¼¸Ò³
@orderid nvarchar(50),--Ö÷¼üÅÅÐò
@sort int,--ÅÅÐò·½Ê½£¬1±íʾÉýÐò£¬0±íʾ½µÐòÅÅÁÐ
......
SQL Server°²×°Îļþ¹ÒÆð:
ÔÚÖØа²×°Ö÷SQLServer2000ʱ»òÊÇ´ò²¹¶¡Ê±,×ÜÊÇ»áÓöµ½SQLServer°²×°Îļþ¹ÒÆð¡£
ÔÚÔËÐд°¿ÚÊäÈëregedit£¬´ò¿ª×¢²á±í±à¼Æ÷£¬ÔÚHKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Session ManagerÖÐÕÒµ½PendingFileRenameOperations£¬É¾³ý¸Ã¼üÖµ£¨Õâ¸ö¼üÖµÊÇ°²×°³ÌÐòÔݹÒÏîÄ¿£¬Ö»ÒªÕÒµ½¶ÔÓ¦µÄÓ¦Óó ......
ÊÓͼ¿ÉÒÔ±»¿´³ÉÊÇÐéÄâ±í»ò´æ´¢²éѯ¡£¿Éͨ¹ýÊÓͼ·ÃÎʵÄÊý¾Ý²»×÷Ϊ¶ÀÌصĶÔÏó´æ´¢ÔÚÊý¾Ý¿âÄÚ¡£Êý¾Ý¿âÄÚ´æ´¢µÄÊÇ SELECT Óï¾ä¡£SELECT Óï¾äµÄ½á¹û¼¯¹¹³ÉÊÓͼËù·µ»ØµÄÐéÄâ±í¡£Óû§¿ÉÒÔÓÃÒýÓñíʱËùʹÓõķ½·¨£¬ÔÚ Transact-SQL Óï¾äÖÐͨ¹ýÒýÓÃÊÓͼÃû³ÆÀ´Ê¹ÓÃÐéÄâ±í¡£Ê¹ÓÃÊÓͼ¿ÉÒÔʵÏÖÏÂÁÐÈÎÒ»»òËùÓй¦ÄÜ£º
¡¡¡¡½«Óû§ÏÞ¶¨ÔÚ±í ......
Ò»¡¢¾ßÓÐÖ÷¼üµÄÇé¿ö
I.¾ßÓÐΨһÐÔµÄ×Ö¶Îid(ΪΨһÖ÷¼ü)
delete Óû§±í
where id not in
(
select max(id) from Óû§±í group by col1,col2,col3...
)
group by ×Ó¾äºó¸úµÄ×ֶξÍÊÇÄãÓÃÀ´ÅжÏÖظ´µÄÌõ¼þ£¬ÈçÖ»ÓÐcol1£¬
ÄÇôֻҪcol1×Ö¶ÎÄÚÈÝÏàͬ¼´±íʾ¼Ç¼Ïàͬ¡£
II. ......