SQLÈ¡³öµÚ m Ìõµ½µÚ n Ìõ¼Ç¼µÄ·½·¨
´ÓTable ±íÖÐÈ¡³öµÚ m Ìõµ½µÚ n ÌõµÄ¼Ç¼£º(Not In °æ±¾)
SELECT TOP n-m+1 *
from Table
WHERE (id NOT IN (SELECT TOP m-1 id from Table ))
--´ÓTABLE±íÖÐÈ¡³öµÚmµ½nÌõ¼Ç¼ (Exists°æ±¾)
SELECT TOP n-m+1 * from TABLE AS a WHERE Not Exists
(Select * from (Select Top m-1 * from TABLE order by id) b Where b.id=a.id )
Order by id
--mΪÉϱ꣬nΪϱê,ÀýÈçÈ¡³öµÚ8µ½12Ìõ¼Ç¼,m=8,n=12,TableΪ±íÃû
Select Top n-m+1 * from Table
Where Id>(Select Max(Id) from
(Select Top m-1 Id from Table Order By Id Asc) Temp)
Order By Id Asc
1. Select Top n-m+1 * from Table Where Id>(Select Top m-1 Id from Table Order By Id Asc) Order By Id Asc
2. SQL Server 2005 ÖпÉÒÔÓà ROW_NUMBER£¨£© OVER£¨£©ÅäºÏÈ¡·ÖÒ³Êý¾ÝÁË¡£
DECLARE @StartRow INT
DECLARE @PageSize INT
SET ROWCOUNT 0
SET @StartRow = 100
SET @PageSize = 10
SELECT * from
(
SELECT ROW_NUMBER() OVER (ORDER BY Name) AS RowNumber,* from Person
) AS A WHERE A.RowNumber BETWEEN @StartRow + 1 AND @StartRow + @PageSize
3. select top n-m+1 from A where id not in (select m-1 id from A)
Ïà¹ØÎĵµ£º
ǰһ¶Îʱ¼äÔÚά»¤Ò»¸öÀÏÏîÄ¿µÄʱºò·¢ÏÖ£¬ÔÚÖ´ÐÐÒ»¸ö½Ï´óµÄ´æ´¢¹ý³Ìʱ£¬×ÜÊDZ¨“³£¹æÍøÂç´íÎó£¬Çë¼ì²éÄúµÄÍøÂçÎĵµ”¡£ÔÚºóÐøµÄά»¤¼ì²éÖз¢ÏÖ£¬ÊÇÊÂÎﳬʱµ¼ÖÂÖ´ÐÐÖÐÖ¹µÄ¡£
ÏÂÃæÊǵ÷Õû¹ý³Ì£º
Ò»¡¢°ÑSQL SERVERµÄµÈ´ýÏìӦʱ¼ ......
Êý¾Ý¿âʵÀý½á¹¹ ÊÂÎñÒ»ÖÂÐÔ(Transactional Consistency)ºÍ»ùÓÚʱ¼äµãµÄ»Ö¸´(Point-in-time Recovery) ϵͳԪÊý¾Ý
topÊý¾Ý¿âʵÀý½á¹¹
µ±OracleʵÀýÆô¶¯Ö®ºó£¬Ëù¿´µ½µÄ¾ÍÊÇÔÚ·þÎñÆ÷ÄÚ´æÉϵÄÒ»¸ö¸ö²»Í¬ÄÚ´æ¿é¼ÓÉϲúÉúµÄÓëÕâЩÄÚ´æ½»»¥µÄºǫ́½ø³Ì¡£OracleÎĵµ½«ÕâЩÄÚ´æ½á¹¹ºÍ½ø³ÌÊյĺÜÏêϸ¡£
ÓÉOracleʵÀýËùÕ¼ÓõÄÄÚ´æ¿é³ ......
SQL ServertimestampÊý¾ÝÀàÐÍÓëʱ¼äºÍÈÕÆÚÎ޹ء£SQL ServertimestampÊǶþ½øÖÆÊý×Ö£¬Ëü±íÃ÷Êý¾Ý¿âÖÐÊý¾ÝÐ޸ķ¢ÉúµÄÏà¶Ô˳Ðò¡£ÊµÏÖtimestampÊý¾ÝÀàÐÍ×î³õÊÇΪÁËÖ§³Ö SQL Server »Ö¸´Ëã·¨¡£Ã¿´ÎÐÞ¸Äҳʱ£¬¶¼»áʹÓõ±Ç°µÄ @@DBTS Öµ¶ÔÆä×öÒ»´Î±ê¼Ç£¬È»ºó @@DBTS ¼Ó1¡£ÕâÑù×ö×ãÒÔ°ïÖú»Ö¸´¹ý³ÌÈ·¶¨Ò³Ð޸ĵÄÏà¶Ô´ÎÐò£¬µ«ÊÇtimest ......
Ó¦ÓÃÖз¢ÏÖsqlÖеÄand¼°orµÄÖ´ÐÐЧÂÊÎÊÌâ
£ó£ñ£ìÓï¾ä£¬ÎªÊ²Ã´°Ñ×îºóµÄ£ï£ò»»³É£á£î£ä£¬²éѯµÄ¾ÍºÜ¿ì£¬Ê¹ÓõÄÊÇmssql·¶ÀýÖÐnorthwindÊý¾Ý¿âΪÀý£¬
select * from Orders a left join [Order Details] b on a.orderid = b.orderid
where a.customerid like '%ics%' or b.productid in (42,72)
×·×ÙÁËÓï¾äµÄÖ´Ðз½°¸,·¢ÏÖ ......