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

ÐÞ¸ÄSQL 2005Êý¾Ý¿âĬÈϲ»Çø·Ö´óСд

´´½¨µÄÊý¾Ý¿âÖÐÇø·Ö´óСд
create database test  COLLATE  Chinese_PRC_CS_AS  
Êý¾Ý¿âÖÐÇø·Ö´óСд
alter database test  COLLATE  Chinese_PRC_CS_AS 
»Ö¸´Ä¬ÈϵIJ»Çø·Ö´óСд
alter database test  COLLATE  Chinese_PRC_CI_AS


Ïà¹ØÎĵµ£º

SQL ÖÐWith as µÄÓ÷¨

Ò»£®WITH ASµÄº¬Òå
WITH AS¶ÌÓҲ½Ð×ö×Ó²éѯ²¿·Ö£¨subquery factoring£©£¬¿ÉÒÔÈÃÄã×öºÜ¶àÊÂÇ飬¶¨ÒåÒ»¸öSQLƬ¶Ï£¬¸ÃSQLƬ¶Ï»á±»Õû¸öSQLÓï¾äËùÓõ½¡£ÓеÄʱºò£¬ÊÇΪÁËÈÃSQLÓï¾äµÄ¿É¶ÁÐÔ¸ü¸ßЩ£¬Ò²ÓпÉÄÜÊÇÔÚUNION ALLµÄ²»Í¬²¿·Ö£¬×÷ΪÌṩÊý¾ÝµÄ²¿·Ö¡£
ÌØ±ð¶ÔÓÚUNION ALL±È½ÏÓÐÓá£ÒòΪUNION ALLµÄÿ¸ö²¿·Ö¿ÉÄÜÏàͬ£¬µ ......

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 ......

×¥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 ......

ORACLEÖÐÓÃrownum·ÖÒ³²¢ÅÅÐòµÄSQLÓï¾ä

µÚÒ»ÖÖ£º 
select b.* from
 ( select a.*, rownum row_num from
   (select t.* from A05_ORGANIZATION t order by org_name_en asc) a
  ) b
 where b.row_num  between 1 and 5  order by b.row_num asc
µÚ¶þÖÖ£¨¸ü¸ßЧ£©£º
select b.* from
 ( select a.*, rown ......

SQL֮ʮ profiler

Microsoft SQL Server Profiler ÊÇ SQL ¸ú×ÙµÄͼÐÎÓû§½çÃæ£¬ÓÃÓÚ¼àÊÓ Êý¾Ý¿âÒýÇæ»ò Analysis Services µÄʵÀý¡£Äú¿ÉÒÔ²¶»ñÓйØÃ¿¸öʼþµÄÊý¾Ý²¢½«Æä±£´æµ½Îļþ»ò±íÖй©ÒÔºó·ÖÎö¡£ÀýÈ磬¿ÉÒÔ¶ÔÉú²ú»·¾³½øÐмàÊÓ£¬Á˽âÄÄЩ´æ´¢¹ý³ÌÓÉÓÚÖ´ÐÐËÙ¶ÈÌ«ÂýÓ°ÏìÁËÐÔÄÜ¡£
¿ÉÒÔʹÓà SQL Server ProfilerÀ´´´½¨Ä£°å£¬¶¨ÒåÒª°üº¬ÔÚ¸ú×ÙÖ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ