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 ......

SQL Server JDBC Çý¶¯·â×°

1¡¢½¨Á¢Ò»¸öjdbc.jsp Îļþ£º
2¡¢½«ÏÂÃæÏàÓ¦µÄ´úÂë¸´ÖÆµ½jdbc.jspÖÐ
3¡¢±àдҪÁ¬½Óµ½Êý¾Ý¿âµÄjspÎļþʱ£¬Ö»Ð轫jdbc.jspÎļþ°üº¬µ½¸ÃjspÎļþÖоÍÐÐÁË
·½·¨£ºÌí¼Ó<%@  include file="jdbc.jsp">µ½jspÎļþÖм´¿É
//sql server2005:
<%@ page language="java" import ="java.util.*"%>
 
<%
& ......

SQLÖеÄCASE WHENʹÓÃ

Case¾ßÓÐÁ½ÖÖ¸ñʽ¡£¼òµ¥Caseº¯ÊýºÍCaseËÑË÷º¯Êý¡£
--¼òµ¥Caseº¯Êý
CASE sex
         WHEN '1' THEN 'ÄÐ'
         WHEN '2' THEN 'Å®'
ELSE 'ÆäËû' END
--CaseËÑË÷º¯Êý
CASE WHEN sex = '1' THEN 'ÄÐ'
     ......

sql server2005 ½¨±íÓöµ½µÄÎÊÌâ.

ÔÚsqlserver2005ÖÐÓÃsqlÓï¾äд´úÂë,Éú³ÉÊý¾Ý±í
CREATE TABLE [t_ActivityRecord] (
[activityId] [nchar]  (10) NOT NULL,
[activityName] [nvarchar]  (50) NOT NULL,
[activityMark] [decimal]  (18,3) NOT NULL,
[activityStatement] [ntext]  NOT NULL,
[activityDateTime] [date]  NOT ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ