RE: SQL to retrieve all distinct records

From: Niall Litchfield <n-litchfield_at_audit-commission.gov.uk>
Date: Thu, 15 Apr 2004 15:03:10 +0100
Message-ID: <CFECD6EA683C524BB5FD22C0F1F34ACB011F375B@bristol43.audit-commission.gov.uk>

How are you throwing away SYS SYS2 R3 ?=20

Niall Litchfield
Oracle DBA
Audit Commission
+44 117 975 7805=20

> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org=20
> [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Alison Barak
> Sent: 15 April 2004 14:38
> To: oracle-l_at_freelists.org
> Subject: SQL to retrieve all distinct records

>=20
>=20

> Hi,
> can someone assist me with formulating a query to retrieve=20
> all distinct=20
> records. I need to retrieve all three columns a,b &c based=20
> on the distinct=20
> of the two columns a & b.

>=20


> SQL> select * from testing;

> A          B          C

> ---------- ---------- ----------

> APPS       APPS       R1

> SYS        SYS2       R2

> SYS        SYS2       R3

> DOC        DOC2       R4

> DC         DC2        R5

> DOC        DOC        R6

>=20


> The result should be

> A          B          C

> ---------- ---------- ----------

> APPS       APPS       R1

> SYS        SYS2       R2

> DOC        DOC2       R4

> DC         DC2        R5

> DOC        DOC        R6

>=20
>=20

> I tried using group by/having count but was not successful. Any idea?

>=20

> Thanks.

>=20

> alison

>=20


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>=20


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>=20

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Received on Thu Apr 15 2004 - 09:27:50 CDT