Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

Sql Server¸ù¾Ý¼Ç¼¼¯ÅúÁ¿¸üÐÂÊý¾Ý¿â

update   t1   set   t1.value=t2.value   from   t2   where   t1.id=t2.id
 
update jbsite_class  set topicnum = count
from (select t2.classid,count from (
select distinct classid,count(*) as count
from jbsite_product
group by classid) t2
inner join  jbsite_product on jbsite_product.id = t2.classid
) b where jbsite_class.id=b.classid


Ïà¹ØÎĵµ£º

PL/SQLѧϰ±Ê¼ÇÆß


Oracle9iÒì³£´¦Àí·ÖΪϵͳԤ¶¨ÒåÒì³£´¦ÀíºÍ×Ô¶¨ÒåÒì³£´¦ÀíÁ½²¿·Ö¡£
×Ô¶¨ÒåÒì³£´¦Àí
1.¶¨ÒåÒì³£´¦Àí
declare Òì³£Ãû exception;
2.´¥·¢Òì³£´¦Àí
raise Òì³£Ãû
3.´¦ÀíÒì³£
exception
when Òì³£Ãû1 then
    Òì³£´¦ÀíÓï¾ä¶Î1;
when Òì³£Ãû2 then
    Òì³£´¦ÀíÓï¾ä¶Î2;
ʾÀý£º
se ......

Oracleά»¤³£ÓÃSQLÓï¾ä»ã×Ü

Oracleά»¤³£ÓÃSQLÓï¾ä»ã×Ü
ÉÏһƪ / ÏÂһƪ  2008-09-04 11:25:01
²é¿´( 1991 ) / ÆÀÂÛ( 0 ) / ÆÀ·Ö( 0 / 0 )
ÈçºÎÔ¶³ÌÅжÏOracleÊý¾Ý¿âµÄ°²×°Æ½Ì¨
select * from v$version;
²é¿´±í¿Õ¼äµÄʹÓÃÇé¿ö
select sum(bytes)/(1024*1024) as free_space,tablespace_name
from dba_free_space
group by tablespace_ ......

Îå²½¸ã¶¨sql server2005Êý¾Ý¿âÈÕÖ¾Çå³ý

1¡¢µÚÒ»²½£¬Ñ¡ÖÐÒªÇå³ýÈÕÖ¾µÄÊý¾Ý¿â——ÓÒ¼ü——ÊôÐÔ¡£
 
2¡¢µÚ¶þ²½£ºÔÚÑ¡ÏîҳѡÖГѡÏ¬»Ö¸´Ä£Ê½Ñ¡Ôñ“¼òµ¥”£¬µã»÷×îϱßÈ·¶¨°´Å¥¡£
 
3¡¢µÚÈý²½£¬ÔÙÑ¡ÖÐÊý¾Ý¿âÓÒ¼ü——ÈÎÎñ——ÊÕËõ——Êý¾Ý¿â¡£
 
4¡¢µÚËIJ½£¬µã»÷&ldq ......

ÈçºÎÈÃÄãµÄSQLÔËÐеøü¿ì(תÌù)

ÈçºÎÈÃÄãµÄSQLÔËÐеøü¿ì(תÌù)    
  ----   ÈËÃÇÔÚʹÓÃSQLʱÍùÍù»áÏÝÈëÒ»¸öÎóÇø£¬¼´Ì«¹Ø×¢ÓÚËùµÃµÄ½á¹ûÊÇ·ñÕýÈ·£¬¶øºöÂÔ  
  Á˲»Í¬µÄʵÏÖ·½·¨Ö®¼ä¿ÉÄÜ´æÔÚµÄÐÔÄܲîÒ죬ÕâÖÖÐÔÄܲîÒìÔÚ´óÐ͵ĻòÊǸ´ÔÓµÄÊý¾Ý¿â  
  »·¾³ÖУ¨ÈçÁª»úÊÂÎñ´¦ÀíOLTP»ò¾ö²ßÖ§³ÖϵͳDSS£©ÖбíÏÖµÃÓ ......

ÔÚPHPÖÐÈ«Ãæ×èÖ¹SQL×¢Èëʽ¹¥»÷Ö®Ò»

Ò»¡¢ ÒýÑÔ
¡¡¡¡PHPÊÇÒ»ÖÖÁ¦Á¿Ç¿´óµ«Ï൱ÈÝÒ×ѧϰµÄ·þÎñÆ÷¶Ë½Å±¾ÓïÑÔ£¬¼´Ê¹ÊǾ­Ñé²»¶àµÄ³ÌÐòÔ±Ò²Äܹ»Ê¹ÓÃËüÀ´´´½¨¸´ÔӵĶ¯Ì¬µÄwebÕ¾µã¡£È»¶ø£¬ËüÔÚʵÏÖÒòÌØÍø·þÎñµÄÃØÃܺͰ²È«·½ÃæÈ´³£³£´æÔÚÐí¶àÀ§ÄÑ¡£ÔÚ±¾ÏµÁÐÎÄÕÂÖУ¬ÎÒÃǽ«Ïò¶ÁÕß½éÉܽøÐÐweb¿ª·¢Ëù±ØÐèµÄ°²È«±³¾°ÒÔ¼°PHPÌض¨µÄ֪ʶºÍ´úÂë-Äã¿ÉÒÔ½èÒÔ±£»¤Äã×Ô¼ºµÄwebÓ¦Óó ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ