Why would I get a duplicate key error when updating a row?

Posted by hdx on Stack Overflow See other posts from Stack Overflow or by hdx
Published on 2010-06-09T00:20:00Z Indexed on 2010/06/09 0:32 UTC
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sql

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error

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postgresql

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duplicates

I'm using postgres and I'm getting the duplicate key error when updating a row:

cursor.execute("UPDATE jiveuser SET userenabled = 0 WHERE userid = %s" % str(userId))
psycopg2.IntegrityError: duplicate key value violates unique constraint "jiveuser_pk"

I don't understand how updating a row can cause this error... any help will be much appreciated.

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