Re: avoid duplicate sql

From: <nlzanen1_at_EY.NL>
Date: Wed, 08 Aug 2001 05:49:47 -0700
Message-ID: <F001.00363FD2.20010808055553@fatcity.com>

Hi,

How 'bout

insert into your_users
select user_name, logon_time from v$session a where not exist (select user_name, logon_time from your_users b

                                where a.user_name = b.user_name and
                                             a.logon_time = b.logon_time)

Jack

                                                                                       
                                  
                    "Tatireddy, Shrinivas                                              
                                  
                    (MED, Keane)"                To:     Multiple recipients of list 
ORACLE-L <ORACLE-L_at_fatcity.com>     
                    <Shrinivas.Tatireddy_at_m       cc:     (bcc: Jack van 
Zanen/nlzanen1/External/MEY/NL)                  
                    ed.ge.com>                   Subject:     avoid duplicate sql      
                                  
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                    root_at_fatcity.com                                                   
                                  
                                                                                       
                                  
                                                                                       
                                  
                    08-08-2001 15:15                                                   
                                  
                    Please respond to                                                  
                                  
                    ORACLE-L

Hi lists

i need help in writing a sql query:

i am trying to capture the session information from v$session and inserting the same into someother table xyz with columns username, logon_time. (scott logged in at 10:30 hrs)

i put this script in cron. it runs every 30 minutes. but i need the values shoudld not be duplicated.

Every time the shell script runs, it inserts values into XYZ. table. Here i need your help. The values should not be duplicated that are being insreted into xyz.

since username,logon_time are composite primary key, system will not accept duplicates.

Because, in the v$session, if the user stays more than 30 minutes, his values will be sent to xyz table and as already xyz has that row (inserted before 30 minutes by shell), system will deny to insert the duplicate the value into xyz.

any scripts? scripts?

thanx in advance
srinivas
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Author: Tatireddy, Shrinivas (MED, Keane) INET: Shrinivas.Tatireddy_at_med.ge.com

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Author:
INET: nlzanen1_at_EY.NL

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