C#ÏîÄ¿´ò°ü£¬²¢×Ô¶¯°²×°SQLÊý¾Ý¿â
Ó¦Ò»Î»ÍøÓѵÄÐèÇ󣬲¢ÐÞÕýÁËMVPÀîºé¸ù".NETƽ̨ÏÂWEBÓ¦ÓóÌÐòµÄ²¿Êð(°²×°Êý¾Ý¿âºÍ×Ô¶¯ÅäÖÃ)"ÖеÄosqlÓ÷¨´íÎó£¬ÒѲâÊÔͨ¹ý¡£
Ò»).´´½¨²¿ÊðÏîÄ¿
1. ÔÚ“Îļþ”²Ëµ¥ÉÏÖ¸Ïò“Ìí¼ÓÏîÄ¿”£¬È»ºóÑ¡Ôñ“н¨ÏîÄ¿”¡£
2. ÔÚ“Ìí¼ÓÐÂÏîÄ¿”¶Ô»°¿òÖУ¬Ñ¡Ôñ“ÏîÄ¿ÀàÐÍ”´°¸ñÖеē°²×°ºÍ²¿ÊðÏîÄ¿”£¬È»ºóÑ¡Ôñ“Ä£°å”´°¸ñÖеē°²×°ÏîÄ¿”¡£ÔÚ“Ãû³Æ”¿òÖмüÈë setup1¡£
3. µ¥»÷“È·¶¨”¹Ø±Õ¶Ô»°¿ò¡£
4. ÏîÄ¿±»Ìí¼Óµ½½â¾ö·½°¸×ÊÔ´¹ÜÀíÆ÷ÖУ¬²¢ÇÒÎļþϵͳ±à¼Æ÷´ò¿ª¡£
5. ÔÚ“ÊôÐÔ”´°¿ÚÖУ¬Ñ¡Ôñ ProductName ÊôÐÔ£¬²¢¼üÈë ÐÅÏ¢¹ÜÀíϵͳ ¡£
¶þ).½« Ö÷³ÌÐò ÏîÄ¿µÄÊä³öÌí¼Óµ½²¿ÊðÏîÄ¿ÖÐ
1. ÔÚ“Îļþϵͳ±à¼Æ÷”ÖУ¬Ñ¡Ôñ“Ó¦ÓóÌÐòÎļþ¼Ð”¡£ÔÚ“²Ù×÷”²Ëµ¥ÉÏ£¬Ö¸Ïò“Ìí¼Ó”£¬È»ºóÑ¡Ôñ“ÏîÄ¿Êä³ö”¡£
2. ÔÚ“Ìí¼ÓÏîÄ¿Êä³ö×é”¶Ô»°¿òÖУ¬Ñ¡Ôñ“ÏîÄ¿”ÏÂÀÁбíÖеēÄãµÄ³ÌÐò”¡£
3. µ¥»÷“È·¶¨”¹Ø±Õ¶Ô»°¿ò¡£
4. ´ÓÁбíÖÐÑ¡Ôñ“Ö÷Êä³ö”ºÍ“ÄÚÈÝÎļþ”×飬Ȼºóµ¥»÷“È·¶¨”¡£
Èý).´´½¨°²×°³ÌÐòÀà
1. ÔÚ“Îļþ”²Ëµ¥ÉÏÖ¸Ïò“н¨”£¬È»ºóÑ¡Ôñ“ÏîÄ¿”¡£
2. Ôړн¨ÏîÄ¿”¶Ô»°¿òÖУ¬Ñ¡Ôñ“ÏîÄ¿ÀàÐÍ”´°¸ñÖеēVisual Basic ÏîÄ¿”£¬È»ºóÑ¡Ôñ“Ä£°å”´°¸ñÖеēÀà¿â”¡£ÔÚ“Ãû³Æ”¿òÖмüÈë installDB¡£
3. µ¥»÷“´ò¿ª”¹Ø±Õ¶Ô»°¿ò¡£
4. ´Ó“ÏîÄ¿”²Ëµ¥ÖÐÑ¡Ôñ“Ìí¼ÓÐÂÏ£
5. ÔÚ“Ìí¼ÓÐÂÏî”¶Ô»°¿òÖÐÑ¡Ôñ“°²×°³ÌÐòÀà”¡£ÔÚ“Ãû³Æ”¿òÖмüÈë installDB¡£
6. µ¥»÷“È·¶¨”¹Ø±Õ¶Ô»°¿ò¡£
7. Ïêϸ´úÂ븽ºó¡£
ËÄ).´´½¨×Ô¶¨Òå°²×°¶Ô»°¿ò
1. ÔÚ½â¾ö·½°¸×ÊÔ´¹ÜÀíÆ÷ÖÐÑ¡Ôñ“setup1”ÏîÄ¿¡£ÔÚ“ÊÓͼ”²Ëµ¥ÉÏÖ¸Ïò“±à¼Æ÷”£¬È»ºóÑ¡Ôñ“Óû§½çÃæ”¡£
2. ÔÚÓû§½çÃæ±à¼Æ÷ÖУ¬Ñ¡Ôñ“°²×°”ϵēÆô¶¯”½Úµã¡£ÔÚ“²Ù×÷”²Ëµ¥ÉÏ£¬Ñ¡Ôñ“Ìí¼Ó¶Ô»°¿ò”¡£
3. ÔÚ“Ìí¼Ó¶Ô»°¿ò”¶Ô»°¿òÖУ¬Ñ¡Ôñ“Ðí¿ÉÐÒé”¶Ô»°¿
Ïà¹ØÎĵµ£º
´¦ÀíÍøÕ¾²éѯ°üº¬”Ö®”×Ö³öÏ֔ȫÎÄËÑË÷Ìõ¼þÖаüº¬¸ÉÈÅ´Ê”ÏÖÏóµÄ×ܽ᣺
author:perfectaction
Sql server 2008È«ÎÄË÷ÒýµÄ¸ÉÈŴʱíĬÈÏÔÚResource¿âϵͳ±íÄÚ£¬ÎÞ·¨¸ü¸Ä£¬µ«sql2008ÌṩÁË×Ô¶¨Òå¸ÉÈŴʱíµÄ¹¦ÄÜ£¬¿É°ó¶¨µ½Ä³¸öÈ«ÎÄË÷ÒýÉÏ¡£
Ïà¹Ø²Ù×÷ÈçÏ£º
--sql server 2008 È«ÎÄË÷Òý½¨Á¢¼°´´½¨È«ÎÄ ......
TEMPDB²»Ö§³Ö×Ô¶¯Ñ¹Ëõ£¬ÇÒËüµÄÊý¾Ý¿âºÍÎļþѹËõÄÜÁ¦ÊÇÓÐÏÞÖÆµÄ£»
Èç²»µÃ²»Ñ¹ËõTEMPDBµÄ´óС£¬½¨ÒéʹÓÃÀëÏß¹¦ÄÜ£¬ÈçϲÙ×÷£º
1.Í£Ö¹SQL SERVER·þÎñ£»
2.ÕÒµ½sqlservr.exeÔÚ´ÅÅÌÖеÄλÖã»
3.ʹÓÃsqlservr.exeÊäÈëÃüÁîsqlservr -c -f,ÕâÑùÆô¶¯SQL SERVERʱ£¬TEMPDBµÄ´óСÄܹ»±£³Ö×îС£»
4.ʹÓÃTSQLÃüÁALTER DATA ......
ÎÒÃÇÏÈ¿´ NestedLoop ºÍ MergeJoin µÄËã·¨£¨ÒÔÏÂΪÒýÓ㬼û RicCC µÄ¡¶ ͨÍùÐÔÄÜÓÅ»¯µÄÌìÌà - µØÓü JOIN ·½·¨ËµÃ÷ ¡· ):
==================================
NestedLoop:
foreach rowA in tableA where tableA.col2=?
{
search rowsB from tableB where tableB.c ......
ÉÏ»ØÎÒÃÇ˵µ½ÆÀ¹ÀÒ»ÌõÓï¾äÖ´ÐÐЧÂÊÖ÷Òª¿´Âß¼ IO £¨É¶ÊÇÂß¼ IO £¬É¶ÊÇÎïÀí IO ¼ûÁª»úÎĵµ£©£¬Õâ´ÎÎÒÃǼÌÐø¡£
ÎÒÃÇÏÈ˵˵£¬·µ»Ø¶àÐнá¹ûʱ£¬ÎªÊ²Ã´ SQLServer ÓÐʱ»áÑ¡Ôñ index seek £¬ÓÐʱ»áÑ¡Ôñ index scan ¡£
ÒÔ nonclustered index ΪÀý˵Ã÷¡£
ÏñËùÓеÄË÷Òý B Ê÷Ò»Ñù£¬·Ç¾Û¼¯Ë÷ÒýÊ÷Ò²°üÀ¨ÍêÈ«ÓÉË÷ÒýÊý¾Ý×é³ÉµÄ¸ù½ ......
-- sql 2005
1.rownumÓ÷¨
select * from(
Select rownum=row_number() over(order by 1),* from table
)a where rownum between  ......