ʵÏÖsqlserver·ÖÒ³²éѯÓï¾ä
sqlServer£º
Ò»´Î²éѯ£¬Êý¾Ý¿âÖ»·µ»ØÒ»Ò³µÄÊý¾Ý¡£¶ø²»ÊÇÈ¡³öËùÓеÄÊý¾Ý¡£
pagesize£º ÿҳÏÔʾ¼Ç¼Êý
cureentpage£ºµ±Ç°Ò³Êý
select * from ( select TOP pagesize * from ( SELECT TOP pagesize*cureentpage * from my_table ORDER BY id ASC ) as amyTable ORDER BY id DESC ) as bmyTable ORDER BY id ASC
¼ÙÉè¹²ÓÐÓÐ8Ìõ¼Ç¼£¬Ã¿Ò³ÏÔʾ3Ìõ¼Ç¼£¬id Ϊ3£¬6£¬7£¬37
µÚÒ»Ò³£¨Ê×Ò³£©
select * from ( select TOP 3 * from ( SELECT TOP 3*1 * from my_table ORDER BY id ASC ) as amyTable ORDER BY id DESC ) as bmyTable ORDER BY id ASC
µÚ¶þÒ³
select * from ( select TOP 3 * from ( SELECT TOP 3*2 * from my_table ORDER BY id ASC ) as amyTable ORDER BY id DESC ) as bmyTable ORDER BY id ASC
µÚÈýÒ³£¨Î²Ò³£©
select * from ( select TOP 8-2*3 * from ( SELECT TOP 8-3*2 * from my_table ORDER BY id ASC ) as amyTable ORDER BY id DESC ) as bmyTable ORDER BY id ASC
Ïà¹ØÎĵµ£º
SQL Server 2000
Installing SQL Server 2000 (EÎÄ)
http://msdn.microsoft.com/en-us/library/aa299042(SQL.80).aspx
SQL Server 2000²¹¶¡
Microsoft SQL Server 2000 Service Pack 3a
http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=90DCD52C-0488-4E46-AFBF-ACACE536 ......
ÈçºÎÔÚSqlserverÖдÓÍⲿXMLÎļþÖжÁÈ¡ÅäÖÃÐÅÏ¢ÄØ£¿¸ÃÎÊÌâÔ´×ÔÒ»¼ÒÆóÒµµÄ±ÊÊÔÐÅÏ¢ÓиС£
Ò»xmlÎļþÄÚÈÝ£º
<?xml version="1.0" encoding="utf-8"?>
<root>
<db name="ClientDB1" datasize="512MB" datagrowth="100MB" logsize="100MB" loggrowth ="50MB">
</db>
<db ......
дÁËÒ»¸ö´æ´¢¹ý³Ì¶ÔÊÓͼ½øÐзÖÒ³²éѯ£¬µ«Êý¾ÝÔö¶àºó·¢ÏÖ»ùЧÂʵ͵ÃÒªÃü£¬ÈýÍò¶àÌõÊý¾ÝÒª²éѯһ¸ö°ëСʱ¶¼Ã»³öÀ´£¬Õâ²»ÊÇÒªÁËÃü£¬ÓÚÊÇÏëµ½ÁËË÷Òý£¬Ó¦ÓùýºóÈÔÎÞ¼ÃÓÚÊ¡£×îºó¶Ôsql½øÐзÖÎöºÍʵ¼ùÖеóö£¬Ê¹ÓÃÁÙʱ±í¿ÉÒÔ´ó´ó¼Ó¿ìÊÓͼµÄ²éѯËÙ¶È£¬¼ûÈçÏÂsqlÓï¾ä
ÐÔÄܳ¬µÍµÄÊÓͼ·ÖÒ³sqlÓï¾ä£º
select top 100 * from
view_c ......
Ë÷ÒýµÄÖØÒªÐÔ
Êý¾Ý¿âÐÔÄÜÓÅ»¯ÖÐË÷Òý¾ø¶ÔÊÇÒ»¸öÖØÁ¿¼¶µÄÒòËØ£¬¿ÉÒÔ˵£¬Ë÷ÒýʹÓò»µ±£¬ÆäËüÓÅ»¯´ëÊ©½«ºÁÎÞÒâÒå¡£
¾Û´ØË÷Òý
(Clustered Index)ºÍ·Ç¾Û´ØË÷Òý
(Non- Clustered Index)
×îͨË׵ĽâÊÍÊÇ:¾Û´ØË÷ÒýµÄ˳Ðò¾ÍÊÇÊý¾ÝµÄÎïÀí´æ´¢Ë³Ðò£¬¶ø¶Ô·Ç¾Û´ØË÷ÒýµÄË÷Òý˳ÐòÓëÊý¾ÝÎïÀíÅÅÁÐ˳ÐòÎ޹ء£¾ÙÀýÀ´Ëµ£¬Äã·µ½Ð»ª×ÖµäµÄº ......
¼ÌÐøSQLServerË÷Òýµ÷ÓÅʵ¼ù¡£Õâ´Î̽ÌÖÒ»ÏÂË÷Òý¸²¸Ç - SQL ServerÖ÷ҪʹÓÃË÷ÒýÈ¥²éѯÄãÐèÒªµÄÊý¾Ý£¬µ±Ë÷Òý°üÀ¨ËùÓеÄÄãÇëÇó²éѯµÄ×ֶΣ¬SQL Server½«²»ÐèҪȥÔÚ±íÖвéѯ¡£Õâ¸ö¸ÅÄî³Æ×ö“Ë÷Òý¸²¸Ç”¡£
SQLServer2005µÄNon-clustered INDEXÔö¼ÓÁËÒ»¸ö“°üº¬ÁÐ(included column)
”Ñ¡Ïî¡£ÔÚ SQL Server 2 ......