Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

һЩ²»´íµÄsqlÓï¾ä(ÃæÊÔ¿ÉÄÜÅöµ½Å¶£¡)

 Àý×Ó1)   Ò»¸ö±íTable_1  ÓÐÁ½¸ö×ֶΠ 
          id       number£¬  
          name   varchar2£¨7£©  
          ÆäÖÐidÊÇÖ÷¼ü£¬nameÓÐÖØ¸´¼Ç¼  
          ÒªÇóɾ³ýname×Ö¶ÎÖØ¸´µÄ¼Ç¼£¬±£ÁôÆäÖÐid×Ö¶ÎÖµ×îСµÄÄÇÌõ¼Ç¼  
          È磺  
          id          name  
          1           test  
          2           test  
          3           test  
          4           test1  
          5           test1  
          6           test1  
          ɾÍê        Á˱£Áô  
          1           test  
          4           test1  
   
       &nbs


Ïà¹ØÎĵµ£º

SQL¼ò·±×ª»»º¯Êý

--È«²¿µÄ¼ò·±¶ÔÕÕ
declare @jall nvarchar(4000),@fall nvarchar(4000)
select @jall=N'°¡°¢°£°¤°¥°¦°§°¨°©°ª°«°¬°­°®°¯°°°±°²°³°´°µ°¶°·°¸°¹°º°»°¼°½°¾°¿°À°Á°Â°Ã°Ä°Å°Æ°Ç°È°É°Ê°Ë°Ì°Í°Î°Ï°Ð°Ñ°Ò°Ó°Ô°Õ°Ö°×°Ø°Ù°Ú°Û°Ü°Ý°Þ°ß°à°á°â°ã°ä°å°æ°ç°è°é°ê°ë°ì°í°î°ï°ð°ñ°ò°ó°ô°õ°ö°÷°ø°ù°ú°û°ü°ý°þ±¡±¢±£±¤±¥±¦±§±¨±©±ª±«±¬±­±® ......

ÅäËÍÒѵ½»õ¶©µ¥ºÅ²éѯ sql Óï¾äÓÅ»¯

select c0501 "¶©µ¥±àºÅ",
   c0503 "¹©Ó¦É̱àÂë",a0302 "¹©Ó¦ÉÌÃû³Æ",
   to_char(c0515,'yyyy.mm.dd') "¶©»õÈÕÆÚ",
   to_char(c0516,'yyyy.mm.dd') "Ô¤¶¨½»»õÈÕÆÚ"
   from c05,a03 where c0503=a0301 and
 &nb ......

SQLÊÂÎñ´¦Àí


-sqlÊÂÎñ´¦Àí
----------------------Àí------------ÂÛ-----------------------
1.ʲôÊÇÊÂÎñ£ºÊÂÎñÊÇÒ»¸ö²»¿É·Ö¸îµÄ¹¤×÷Âß¼­µ¥Ôª£¬ÔÚÊý¾Ý¿âϵͳÉÏÖ´Ðв¢·¢²Ù×÷ʱÊÂÎñÊÇ×öΪ×îСµÄ¿ØÖƵ¥ÔªÀ´Ê¹Óõġ£Ëû°üº¬µÄËùÓÐÊý¾Ý¿â²Ù×÷ÃüÁî×÷Ϊһ¸öÕûÌåÒ»ÆðÏòϵÌá½»»ò³·Ïû£¬ÕâÒ»×éÊý¾Ý¿â²Ù×÷ÃüÁîҪô¶¼Ö´ÐУ¬ÒªÃ´¶¼²»Ö´ÐС£
2.ÊÂÎ ......

SQLÖÐDATEADDºÍDATEDIFFµÄÓ÷¨

SQLÖÐDATEADDºÍDATEDIFFµÄÓ÷¨
ÈÕÆÚ:2008-07-17 ×÷Õß:ϲ騰С¶þ 來Ô´:PHPChina
ͨ³££¬妳ÐèÒª獲µÃ當ǰÈÕÆÚºÍ計ËãһЩÆäËûµÄÈÕÆÚ£¬ÀýÈ磬妳µÄ³ÌÐò¿ÉÄÜÐèÒªÅÐ斷Ò»個ÔµĵÚÒ»Ìì»òÕß×îááÒ»Ìì¡£妳們´ó²¿·ÖÈË´ó¸Å¶¼ÖªµÀÔõ樣°ÑÈÕÆÚ進ÐзָÄê ......

SQL ÈÕÆÚ


MySQL Date º¯Êý
ÏÂÃæµÄ±í¸ñÁгöÁË MySQL ÖÐ×îÖØÒªµÄÄÚ½¨ÈÕÆÚº¯Êý£º
º¯ÊýÃèÊö
NOW()
·µ»Øµ±Ç°µÄÈÕÆÚºÍʱ¼ä
CURDATE()
·µ»Øµ±Ç°µÄÈÕÆÚ
CURTIME()
·µ»Øµ±Ç°µÄʱ¼ä
DATE()
ÌáÈ¡ÈÕÆÚ»òÈÕÆÚ/ʱ¼ä±í´ïʽµÄÈÕÆÚ²¿·Ö
EXTRACT()
·µ»ØÈÕÆÚ/ʱ¼ä°´µÄµ¥¶À²¿·Ö
DATE_ADD()
¸øÈÕÆÚÌí¼ÓÖ¸¶¨µÄʱ¼ä¼ä¸ô
DATE_SUB()
´ÓÈÕÆÚ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ