RE: IN comparison operator in PL/SQL cursor

From: Mercadante, Thomas F \(LABOR\) <Thomas.Mercadante_at_labor.state.ny.us>
Date: Wed, 13 Dec 2006 16:02:32 -0500
Message-ID: <ABB9D76E187C5146AB5683F5A07336FFE0895B@EXCNYSM0A1AJ.nysemail.nyenet>

Geoff,

Take a look at dynamic sql/execute immediate. You are building a dynamic query. I suspect that if you passed in just one value for sd.abbreviation, it would work fine (GetStationDataByList('a');)

But if you pass in a real list like 'a,b,c', then the in clause is looking specifically for that string GetStationDataByList('a,b,c').

Tom

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-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Geoffrey E. Quelch Sent: Wednesday, December 13, 2006 3:57 PM To: oracle-l
Subject: IN comparison operator in PL/SQL cursor

Hi,
I'm wondering if someone on this list can help with this problem I'm trying
to resolve.

I'm attempting to use an IN comparison operator in a PL/SQL cursor and can't
seem to get it to work.

Pseudo code follows:

    PROCEDURE GetStationDataByList (

        in_list IN VARCHAR2
    )
    IS

• Retrieval CURSOR CURSOR cr_retrieve IS SELECT SD.Value AS Value FROM Station_Data SD WHERE SD.Abbreviation IN (in_list)

(I have removed unrelated items in this cursor.)

As written, the above doesn't work, how can I modify "in_list" to get this to
work? Is this in fact even possible?

By not work, I mean no rows are returned and I don't get an error. If I move
the select statement to sqlplus and place the text I have in "in_list" into the operator, I get rows returned as expected.

I've consulted the Oracle documentation, and there appears to be no mention
on how this needs to be done.

Thanks
Geoff Quelch

--

Geoff Quelch
Email: gequelch_at_frii.net

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http://www.freelists.org/webpage/oracle-l Received on Wed Dec 13 2006 - 15:02:32 CST