Sql ServerÖÐʹÓÃnewid()Ëæ»úº¯ÊýÈ¡³öÊý¾Ý
ÕâÖÖÓ÷¨ÏàÐÅÔÚÍøÕ¾Öо³£Ê¹Óã¬ÈçÒªÔÚ±íÖÐËæ»úÈ¡³ö10Ìõ¼Ç¼£¬Èç¹ûʹÓñà³ÌÓïÑÔ½øÐÐÔËËãµÄ»°»áºÜÂé·³¶øÇÒЧÂʵÍÏ¡£ÔÚSql ServerÖÐ×Ô´øÁËrandom()º¯ÊýÓÃÓÚÉú³ÉËæ»úÊý£¬ÆäʵËü»¹×Ô´øÁËÁíÍâÒ»¸öËæ»úº¯Êýnewid();newid()ÔÚɨÃèÿÌõ¼Ç¼ʱ¶¼»áÉú³ÉÒ»¸öËæ»úµÄÖµ£º
Ö´ÐÐselect newid()£»ÔËÐнá¹û
¿ÉÒÔ¿´µ½Õâ²¢²»ÊÇÒ»¸öËæ»úµÄÊý×ÖÀàÐÍ¡£
ÔÚ±íÖÐËæ»úÈ¡³önÌõ¼Ç¼£¬¾Í¿ÉÒÔʹÓÃselect top n * from table order by newid()ʵÏÖ£»
Ïà¹ØÎĵµ£º
À´×Ô£ºhttp://www.cnblogs.com/morningwang/archive/2009/01/02/1367277.html
ÓйطÖÒ³ SQL µÄ×ÊÁϺܶ࣬ÓеÄʹÓô洢¹ý³Ì£¬ÓеÄʹÓÃÓαꡣ±¾È˲»Ï²»¶Ê¹ÓÃÓα꣬ÎÒ¾õµÃËüºÄ×Ê¡¢Ð§Âʵͣ»Ê¹Óô洢¹ý³ÌÊǸö²»´íµÄÑ¡Ôñ£¬ÒòΪ´æ´¢¹ý³ÌÊǾ¹ýÔ¤±àÒëµÄ£¬Ö´ÐÐЧÂʸߣ¬Ò²¸üÁé»î¡£ÏÈ¿´¿´µ¥Ìõ SQL Óï¾äµÄ·ÖÒ³ SQL °É¡£
·½·¨1£º
ÊÊÓÃ ......
1¡¢ÏÂÔØ±Ø±¸Èí¼þ
(1) JDK (Java Development Kit)
SUN¹Ù·½µÄÏÂÔØµØÖ·ÊÇhttp://java.sun.com/javase/downloads/index.jsp
(2) JDBC
(3) Eclipse
(4) Microsoft SQL Server 2005 Express£¨µ±È»£¬ÓзÇExpressÒ²OK°¡£©
(5) SQL Server Management Studio
2¡¢°²×°Óë»·¾³ÅäÖÃ
(1) JDK
Ê×ÏÈÔÚWindows»·¾³Ï£¬ÏÂÔØºó° ......
SQLServerʱ¼äÈÕÆÚº¯ÊýÏê½â,SQLServer,ʱ¼äÈÕÆÚ,
1. µ±Ç°ÏµÍ³ÈÕÆÚ¡¢Ê±¼ä
select getdate()
2. dateadd ÔÚÏòÖ¸¶¨ÈÕÆÚ¼ÓÉÏÒ»¶Îʱ¼äµÄ»ù´¡ÉÏ£¬·µ»ØÐ嵀 datetime Öµ
ÀýÈ ......
´ÓA±íËæ»úÈ¡10Ìõ¼Ç¼,ÓÃSELECT TOP 10 * from ywle order by newid()
order by Ò»°ãÊǸù¾Ýijһ×Ö¶ÎÅÅÐò,newid()µÄ·µ»ØÖµ ÊÇuniqueidentifier ,order by newid()Ëæ»úѡȡ¼Ç¼ÊÇÈçºÎ½øÐеÄ
newid()ÔÚɨÃèÿÌõ¼Ç¼µÄʱºò¶¼Éú³ÉÒ»¸öÖµ, ¶øÉú³ÉµÄÖµÊÇËæ»úµÄ, ûÓдóСд˳Ðò. ËùÒÔ×îÖÕ½á¹ûÔÙ°´Õâ¸öÅÅÐò, ÅÅÐòµÄ½á¹ûµ±È»¾ÍÊÇÎ ......