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

×¥SQLÖ´ÐÐÓï¾äʱ¼äµÄ½Å±¾

select sql_text, spid, v$session.program, process
  from v$sqltext, v$session, v$process
  where v$sqltext.address = v$session.sql_address
  and v$sqltext.hash_value = v$session.sql_hash_value
  and v$session.paddr = v$process.addr
  and v$process.spid in (4335);
×¢Ò⣺PIDÊÇtopÀï¿´µ½µÄ½ø³ÌID


Ïà¹ØÎĵµ£º

Oracle Sql ÓÅ»¯


»ù±¾µÄSql±àдעÒâÊÂÏî
¾¡Á¿ÉÙÓÃIN²Ù×÷·û£¬»ù±¾ÉÏËùÓеÄIN²Ù×÷·û¶¼¿ÉÒÔÓÃEXISTS´úÌæ¡£
²»ÓÃNOT IN²Ù×÷·û£¬¿ÉÒÔÓÃNOT EXISTS»òÕßÍâÁ¬½Ó+Ìæ´ú¡£
OracleÔÚÖ´ÐÐIN×Ó²éѯʱ£¬Ê×ÏÈÖ´ÐÐ×Ó²éѯ£¬½«²éѯ½á¹û·ÅÈëÁÙʱ±íÔÙÖ´ÐÐÖ÷²éѯ¡£¶øEXISTÔòÊÇÊ×Ïȼì²éÖ÷²éѯ£¬È»ºóÔËÐÐ×Ó²éѯֱµ½ÕÒµ½
µÚÒ»¸öÆ¥ÅäÏî¡£NOT EXISTS±ÈNOT INЧÂÊÉ ......

SQLÂß¼­²éѯ´¦Àí˳Ðò

SQL²»Í¬ÓÚÆäËû±à³ÌÓïÑÔµÄ×îÃ÷ÏÔÌØÕ÷ÊÇ´¦Àí´úÂëµÄ˳Ðò¡£ÔÚ´ó¶àÊý¾Ý¿âÓïÑÔÖУ¬´úÂë°´±àÂë˳Ðò±»´¦Àí¡£µ«ÔÚSQLÓï¾äÖУ¬µÚÒ»¸ö±»´¦ÀíµÄ×Ó¾äʽfrom£¬¶ø²»ÊǵÚÒ»³öÏÖµÄSELECT¡£SQL²éѯ´¦ÀíµÄ²½ÖèÐòºÅ£º
      
view source
< id="highlighter_299531_clipboard" title="copy to clipboard" clas ......

sqlÖÐ in ¡¢not in ¡¢exists¡¢not exists Ó÷¨ºÍ²î±ð


exists £¨sql ·µ»Ø½á¹û¼¯ÎªÕ棩 
not exists (sql ²»·µ»Ø½á¹û¼¯ÎªÕ棩 
ÈçÏ£º 
±íA 
ID NAME 
1    A1 
2    A2 
3  A3 
±íB 
ID AID NAME 
1    1 B1 
2  & ......

SQL 2000Óû§×Ô¶¨Ò庯Êý

Ò»¡£SQL Server µÄÈýÖÖ×Ô¶¨Ò庯Êý
“×Ô¶¨Ò庯Êý”ÊÇÎÒÃÇÆ½³£µÄ˵·¨£¬¶ø“Óû§¶¨ÒåµÄº¯Êý”ÊÇ SQL Server ÖÐÊéÃæµÄ˵·¨¡£
SQL Server 2000 ÔÊÐíÓû§´´½¨×Ô¶¨Ò庯Êý£¬×Ô¶¨Ò庯Êý¿ÉÒÔÓзµ»ØÖµ¡£
×Ô¶¨Ò庯Êý·ÖΪ£º±êÁ¿Öµº¯Êý»ò±íÖµº¯Êý
Èç¹û RETURNS ×Ó¾äÖ¸¶¨Ò»ÖÖ±êÁ¿Êý¾ÝÀàÐÍ£¬Ôòº¯ÊýΪ±êÁ¿Öµº¯Êý¡£¿É ......

java Á¬½Ó sql 2005 µÄ·½·¨

java Á¬½Ó sql 2005 µÄ·½·¨£º
 1¡£µ½Î¢Èí¹Ù·½ÍøÕ¾ÏÂÔØ2005µÄjdbc²¢½âѹ£¬»ñµÃÎļþsqljdbc.jar
2¡£¸´ÖÆÎļþsqljdbc.jarµ½jdkĿ¼\jdk1.5\jre\lib\extÏ¡£
 3¡£¿ªÊ¼-¡µ³ÌÐò-¡µsql server 2005-¡µÅäÖù¤¾ß-¡µSQL Server Configuration Manager¡£Æô¶¯sql 2005·þÎñ¡£
µã»÷ sql server2005ÍøÂçÅäÖýڵ㣬²¢Ñ¡ÖÐ&rd ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ