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Home -> Community -> Mailing Lists -> Oracle-L -> Re: Trigger
Hi Hamid !
I hope this ud work.
Create or replace trigger cre_PK
before insert on tableA
for each row
begin
if :new.col1 is null then
select seqname.nextval into :new.col1 from dual;
end if;
end;
/
You can not use or insert statement for same table on which u r writing the
trigger .
Tell me if i am wrong ?
Shishir Kumar Mishra
Agni Software (P) Ltd.,
Bangalore-560055, India
Email :shishir_at_agnisoft.com
-- ----- Original Message ----- To: "Multiple recipients of list ORACLE-L" <ORACLE-L_at_fatcity.com> Sent: Thursday, December 20, 2001 11:25 PMReceived on Fri Dec 21 2001 - 00:51:24 CST
> List,
>
> I need some help for creating a trigger, here is my question?
>
> I have a table TABLEA(col1,col2,col3) col1 is Primary Key for this table
> and an application insert records into this table, but I want to write a
> trigger on this table to generate primary key with using nexval of a
> sequence I have tried but doesn't work , if any of you have some sample or
> some links I really appreciate,
> This is my trigger:
>
> Create or replace trigger cre_PK
> before insert
> insert into tableA(col1) values(seqname.nextval)
> end
>
> Thanks in Advance
>
>
>
>
>
> Hamid Alavi
> Office 818 737-0526
> Cell 818 402-1987
>
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> --
> Author: Hamid Alavi
> INET: hamid.alavi_at_quovadx.com
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Shishir INET: shishir_at_agnisoft.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
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