Good day Nick
=-00-=-0-00-0-0-

We have tried this, but it still shows that there are no duplicates.

thanks

Johannes

At 09:31 AM 03/02/2006, you wrote:

>Try this instead:
>
>select * from a a2
>where a2.code IN
>(select a1.code from a a1 group by a1.code having count(*) > 1)
>
>
>--
>Nick
>-----We Solve your Computer Problems---
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>-----Original Message-----
>From: firebird-support@yahoogroups.com
>[mailto:firebird-support@yahoogroups.com] On Behalf Of Johannes Pretorius
>Sent: 03 February 2006 07:15
>To: firebird-support@yahoogroups.com
>Subject: [firebird-support] Funny problem with creation of Primary keys on
>table
>Importance: High
>
>
>Good day all
>-=0-0=0-0-=-=0
>
>We have a problem with a database of ours. It is in interbase 5.6.
>
>We have a table, for this example called A :
>
>
>CREATE TABLE A (
> CODE VARCHAR(6) NOT NULL
> TITLE T_TITLE,
> INITIALS T_INITIALS,
> SURNAME LASTNAME
>)
>
>
>It has an index on the one column as example
>
>CREATE ASCENDING INDEX RD_CODE ON A (CODE)
>
>Now after a few years we have decided to do what we where suppose to do from
>the beginning and that is to ADD a primary key on the table on the CODE
>column
>
>We do this as follows :
>
>ALTER TABLE A
> ADD CONSTRAINT A_PK1
> PRIMARY KEY (CODE)
>
>We then got the error :
>
>KEY VIOLATION ATTEMPT TO STORE DUPLICATE VALUE (VISIBLE TO ACTIVE
>TRANSACTIONS) IN UNIQUE INDEX "RDB$PRIMARY58"
>
>We then deleted all duplicates as follows
>
>delete from a a1 where (select count(code) from a a2 where a1.code =
>a2.code)>1
>
>We then STILL got the same error. So when then Sweeped the database and
>checked Forced Writes is ON. And dit it again but still the SAME error.
>
>We don't really know anymore from here on what to do. If we
>run the following query we get NO records that indicate to be duplicated.
>
>select * from a a1 where (select count(code) from a a2 where a1.code =
>a2.code)>1
>
>
>If anybody can give us some ideas it will be appreciated.
>
>Yours Sincerely
>
>Johannes Pretorius
>(Programeerings Departement- Promed)
>
>Tel : +27 11 607-3300
>Faks : +27 11 622-6939
>webtuiste : http://www.promed.co.za
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