RE: ora-918

Yechiel,

"MONTH" is a reserved word in PL SQL and you have a field name "month". Could that be the problem?

Jerry Whittle
ACIFICS DBA
NCI Information Systems Inc.
jerome.whittle_at_scott.af.mil
618-622-4145

> -----Original Message-----
> From: Yechiel Adar [SMTP:adar76_at_inter.net.il]
>
> Hello list
>
> I need help in solving ORA-918: Ambiguous field reference.
> All the fields are schema.tablename.fieldname.
> The SQL has 3 inline queries that are the same but with different
> months in the where clause.
> Simplified version:
> select acct .....
> from tab1, tab2, ....
> where
> .......
> and acct in (select acct from tab1 where balance > 7000 and month = 2)
> and acct in (select acct from tab1 where balance > 7000 and month = 3)
> and acct in (select acct from tab1 where balance > 7000 and month = 4)
> group by acct;
>
> Now the query runs OK with only one sub query.
> Oracle 8.1.6.3.4 on NT.
>
> I already replaced the three IN with 3 = select count() where month in
> (2,3,4)
> and it works, but I would like to know why the original didn't.
>
> Yechiel Adar
> Mehish
>

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