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   ֮ǰ¾É·½·¨ÊÇʹÓà alter session set events ..  »òÕßʹÓÃdbms_system.set_ev·½Ê½
   ʹÓÃdbms_monitor°ü¿ÉÒÔÔڻỰ£¬¿Í»§¶Ë£¬×é¼þÒÔ¼°Êý¾Ý¿âËĸö²ã¼¶¿ªÆôSQLµÄ¸ú×Ù¡£
   Ö»ÓÐÓµÓÐdba½ÇÉ«µÄÓû§²ÅÄÜÔÊÐíÖ´ÐÐdbms_monitor°ü
   4¸ö²ã´Î¼¶±ðµÄ¼¤»îµ÷Ó÷½·¨£º
    »á »° ¼¶:exec dbms_monitor.session_trace_enable(session_id =>1574,
                        serial_num=>36749,waits=>true,binds=>false);
             ×¢Òâ:ʹÓÃselect *  from v$session where sid=sys_context('userenv','sid');
             »ñµÃsession_idºÍserial
             ¹Ø±ÕÓÃ:
         exec dbms_monitor.session_trace_disable(session_id=>1574,serial_num=>36749)
    ¿Í»§¶Ë¼¶:exec dbms_monitor.cliend_id_trace_enable(
                                 client_id=''JXXXT:Administrator',
                                 waits =>true,binds=>false)
             ×¢Òâ:client_id¼´v$session±íÀïÃæµÄclient_identifier×ֶΣ¬Ä¬ÈÏ´Ë×Ö¶ÎΪ¿Õ,
              ͨ¹ýdba_enabled_traces±í²é¿´ÄÇЩ¿Í»§¶ËÆôÓÃÁËSQL¸ú×Ù
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Oracle µÝ¹é²éѯ

create table tree_table 
(
id number,
pId number,
orderNumber number,
name varchar2(255)
)
select tt.*
from tree_table tt
start with tt.pId = 0
connect by prior tt.id = ttd.pId
order siblings by orderNumber  ......

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char£º´æ´¢¹Ì¶¨³¤¶ÈµÄ×Ö·û£¬Èç¹û×Ö·û³¤¶È²»¹»»áÔÚÓұ߲¹¿Õ¸ñ¡£±ÈÈ磺name char£¨10£©£¬µ±¸øname¸³ÖµÎª'zhangsan'ʱ»áÔÚÓұ߲¹³ä2¸ö¿Õ¸ñ¡£charÀàÐ͵ÄÈÝÁ¿Îª1¡«2000B£¬Ã»ÓÐÖ¸¶¨ÔòĬÈϳ¤¶ÈΪ1¡£
varchar2£º´æ´¢³¤¶È¿É±äµÄ×Ö·û£¬ºÍcharÀàÐ͵IJ»Í¬£¬Ëü²»»á×Ô¶¯²¹³ä¿Õ¸ñ£¬ÇÒ¶¨ÒåÊ ......

SQL ServerÊý¾Ý¿â¹ÜÀí³£ÓÃSQLºÍT SQLÓï¾ä

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select @@version
2.²é¿´Êý¾Ý¿âËùÔÚ»úÆ÷²Ù×÷ϵͳ²ÎÊý
exec master..xp_msver
3.²é¿´Êý¾Ý¿âÆô¶¯µÄ²ÎÊý
sp_configure
4.²é¿´Êý¾Ý¿âÆô¶¯Ê±¼ä
select convert(varchar(30),login_time,120) from master..sysprocesses where spid=1
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print ''Server Name...... ......

SQL Server 2000 µÄϵͳÊý¾Ý¿â

SQL Server 2000 µÄϵͳÊý¾Ý¿â
SQL Server 2000·þÎñÆ÷°²×°ºó»á½¨Á¢4ϵͳÊý¾Ý¿â¡£·Ö±ðÊÇmaster¡¢model¡¢msdb¡¢tempdb¡£
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    masterÊý¾Ý¿âÊÇSQL Server 2000ÖÐ×îÖØÒªµÄÊý¾Ý¿â£¬¼Ç¼ÁËSQL Server 2000µÄ·þÎñÆ÷¼¶ÏµÍ³ÐÅÏ¢£¬°üÀ¨ËùÓÐÕË»§ºÍÃÜÂ룬´ÅÅ̿ռ䡢Îļþ·ÖÅäºÍʹÓá¢ÏµÍ³¼¶µÄÅäÖòÎÊý¡ ......

MS SQL SERVER º£Á¿Êý¾ÝµÄ²éѯÓÅ»¯¼°·ÖÒ³Ëã·¨


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CREATE TABLE [dbo].[TGongwen] (    --TGongwenÊǺìÍ·Îļþ±íÃû
   [Gid] [int]&nb ......
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