http://asktom.oracle.com/~tkyte/Mutate/index.html
"Cynic" <asdf> wrote in message news:uqun5v3rj4sc1_at_corp.supernews.com...
> I have a table that holds, say, sales order line info, SALES_ORDER_LN,
that
> contains the cols SO_NUM, SO_LN_NUM, and SO_VALUE. (ok, my real scenario
is
> more complex, but it is basically the same problem). Anyway, I need to
have
> a trigger on the SALES_ORDER_LN table that will check to see if that
SO_NUM,
> has a record that has a SO_VALUE of a particular value. So, if I insert
the
> following data:
>
> SO# LN# VAL
> ---- ----- ------
> 10 2 C
>
> In the trigger, I want to check that SO# to make sure that SO#10 doesn't
> contain a record (line#) that has a SO_VALUE of "A". So, my challenge is
> finding a way to query the SALES_ORDER_LN table in the trigger that
resides
> on that table. Hence, I get the mutating table.
> I hope this wasn't too confusing of a description.
>
> Basically, if the following exists....
>
> SO# LN# VAL
> ---- ----- ------
> 10 1 A
>
> and I insert this....
>
> 10 2 C
>
> I want to be able to know that 10/1/A exists so I can do another action.
>
> Thanks.
>
>
Received on Fri Oct 18 2002 - 07:24:33 CDT
