Re: Cannot insert a duplicate key into unique index

This same error happened to me this week, and I also saw a posting from
someone else. By chance, do you have a serial field on your lang_pkey?
And if you do, have you exported and reimported the table, dropped and
recreated the table or done something to the serial? I had done this and
when the table was recreated, it reset my serial counter to 1. I
eventually butted up against a PK with the same number already on the
system. You might check there

Patrick Hatcher
Macys.Com

Dmitry Tkach
<dmitry(at)openratings(dot)com To: Brian Johnson <bjohnson(at)johnson-engineering(dot)ca>
> cc: pgsql-novice(at)postgresql(dot)org
Sent by: Subject: Re: [NOVICE] Cannot insert a duplicate key into unique index
pgsql-novice-owner(at)post
gresql.org


07/16/2003 12:45 PM

Brian Johnson wrote:

>I keep getting this error from a complex, multi-table php app
>
>postgres[4513]: [4] ERROR: Cannot insert a duplicate key into unique index
>lang_pkey
>
>To help me find the problem, is there a way to get logging to show what
table the
>error is caused by or what SQL code is causing it?
>
>
>Also, from researching this problem on the internet, it look slike the
unique index
>would normally have three segments table_field_key .. any idea why this
one is
>listed differently?
>
>
>
PK indexes are different, because there can only be one pkey on a table,
there is no need for the 'field' part.
So your index name looks like <tablename>_pkey...
I guess, this answers your question about 'what table the error is
caused by'...

As for 'what SQL code', you can set debug_print_query=true in
postgresql.conf - this will make it print all the sql queries you
execute to the log file...

I hope, it helps...

Dima

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