You need to qualify "DENOM" with the table name: just write "xi.DENOM".
I find this to be good general practice when selecting from more than one
table.
----- Original Message -----
From: "Olle Wijk" <olle.wijk@systecon.se>
To: <pgsql-sql@postgresql.org>
Sent: Wednesday, September 12, 2001 4:06 AM
Subject: How do I extract ONE particular field, when multiple table contain
the same field name?
> Hi,
>
> I am pretty new att using SQL-quires, could anyone help me with this
> one:
>
> I want to do the following SQL-query:
>
> Select XID, DENOM, PRICE, FRT, CTID From XItem xi, Category c Where
> xi.System=1 and xi.Category=c.Index
>
> the problem is that the field 'DENOM' is present in both table 'XItem'
> and
> 'Category' (it is a text description field where you explain whatever
> you
> want). Therefore I get the following complaint when I run the query:
>
> Error msg: "The specified fiel 'DENOM' could refer to more than one
> table listed
> in the FROM clause of your SQL-statement"
>
> The DENOM-field I actually want is the one belonging to the
> XItem-table.
> I would most appreciate if someone could give me a hint how to alter
> the
> SELECT-statement above so that it does what I want.
>
> Regards
>
> /olw
>
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