MsSql ²é¿´ÐÅÏ¢ºÃÓï¾ä
set statistics profile on
set statistics io on
set statistics time on
select top 1 * from et_order order by pkid desc
½á¹ûÈçÏ£º
SQL Server ·ÖÎöºÍ±àÒëʱ¼ä:
CPU ʱ¼ä = 0 ºÁÃ룬ռÓÃʱ¼ä = 1 ºÁÃë¡£
SQL Server Ö´ÐÐʱ¼ä:
CPU ʱ¼ä = 0 ºÁÃ룬ռÓÃʱ¼ä = 1 ºÁÃë¡£
SQL Server Ö´ÐÐʱ¼ä:
CPU ʱ¼ä = 0 ºÁÃ룬ռÓÃʱ¼ä = 1 ºÁÃë¡£
SQL Server Ö´ÐÐʱ¼ä:
CPU ʱ¼ä = 0 ºÁÃ룬ռÓÃʱ¼ä = 1 ºÁÃë¡£
(1 ÐÐÊÜÓ°Ïì)
±í 'ET_Order'¡£É¨Ãè¼ÆÊý 1£¬Âß¼¶ÁÈ¡ 4 ´Î£¬ÎïÀí¶ÁÈ¡ 0 ´Î£¬Ô¤¶Á 0 ´Î£¬lob Âß¼¶ÁÈ¡ 0 ´Î£¬lob ÎïÀí¶ÁÈ¡ 0 ´Î£¬lob Ô¤¶Á 0 ´Î¡£
(3 ÐÐÊÜÓ°Ïì)
SQL Server Ö´ÐÐʱ¼ä:
CPU ʱ¼ä = 0 ºÁÃ룬ռÓÃʱ¼ä = 8 ºÁÃë¡£
ÁíÒ»¸ö°ì·¨Îª£º
declare @begin_date datetime
declare @end_date datetime
select @begin_date = getdate()
exec ´æ´¢¹ý³Ì
select @end_date = getdate()
select datediff(ms,@begin_date,@end_date) as 'ÓÃʱ/ºÁÃë'
Ïà¹ØÎĵµ£º
ÔÚÒø¹âÖйúÍø£¨SilverlightChina.Net£©ÓÐһƪ"SilverlightÓë³£ÓÃÊý¾Ý¿â»¥²Ù×÷ϵÁÐ"ÎÄÕ£¬ÆäÖнéÉÜÁËʹÓÃSilverlight´æÈ¡²»Í¬Êý¾Ý¿âµÄ·½·¨ºÍ²½Öè¡£µ«ÊǶÔÓÚSilverlight´æÈ¡MS SQL½éÉܵIJ»¹»È«Ã棬ÕâÀïÎÒÏë½éÉÜSilverlightÈçºÎͨ¹ýWCF·ÃÎÊMSSQLÊý¾Ý¿â´æ´¢¹ý³ÌµÄ¡£Ï£Íû¶Ô´ó¼ÒÄܹ»ÓÐËù°ïÖú¡£
ÎÒÃÇҪʵÏÖ£¬ Óû§ÊäÈëÓû§ÃûºÍÃÜ ......
SQL SERVER ºÍEXCELµÄÊý¾Ýµ¼Èëµ¼³ö
1¡¢ÔÚSQL SERVERÀï²éѯExcelÊý¾Ý:
-- ======================================================
SELECT *
from OpenDataSource( 'Microsoft.Jet.OLEDB.4.0',
'Data Source="c:\book1.xls";User ID=Admin;Password=;Extended properties=Excel 5.0')...[Sheet1$]
ÏÂÃæÊǸö²éѯµÄʾÀ ......
Oracle,MySQL,MSSQL ServerºÍAccessÊý¾Ý¿âµÄͳ¼Æº¯Êý
ÎÒÃÇÔÚ±à³ÌÖг£ÓõÄͳ¼Æº¯ÊýÓмÆÊý,ÇóºÍ,Çó×î´óÖµ,Çó×îСֵ,Ç󯽾ù,·½²îºÍ±ê×¼²î.
·½²î(Variance)
·½²îÊDZê׼ƫ²îµÄƽ·½¡£×éÖеÄÖµ£¬ÓëËüÃÇÆ½¾ùÖµÖ®¼äÆ«Àë³Ì¶ÈµÄ¶ÈÁ¿¡£
±ê׼ƫ²î(Standard Deviation)
Ò»¸ö²ÎÊý£¬Ö¸³öÒ»ÖÖ·½Ê½£¬Ò»¸ö¸ÅÂʺ¯ÊýÒÔÕâÖÖ·½Ê½·Ö²¼ÔÚÆ½¾ùÖµ¸ ......
ÍøÕ¾¸ü»»¿Õ¼äµÄʱºò£¬¾³£»áÒòΪMSSQLÊý¾Ý¿âÃû²»Í¬£¬µ¼Ö´Ӿɿռ䱸·ÝµÄÊý¾Ý¿âÔÚпռ仹ԺóÎÞ·¨Õý³£Ê¹Óá£Õâʱºò£¬ÎÒÃÇ¿ÉÒÔͨ¹ý½«Êý¾Ý¿â±íµÄËùÓÐÕßÐÞ¸ÄΪ"dbo"À´½â¾öÕâ¸öÎÊÌ⣬¾ßÌåµÄ·½·¨ÈçÏ£º
´ò¿ª"Microsoft SQL Server"µÄ“ÆóÒµ¹ÜÀíÆ÷”£¬µã¿ªÒªÐ޸ĵÄÊý¾Ý¿â£¬Ñ¡Ôñ¹¤¾ßÀ¸Éϵ繤¾ß” ......