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9.6

Postgres - Duplicate key value violates unique constraint

Asked by thready in PostgreSQL Database

Tags: postgres duplicate key value violates unique constraint serial column

Hi Experts,
I thought I fixed this - funny thing is - it was sort of fixed...

When doing INSERT statements, I use the following form with 'serial' columns (my customer_id column is a serial type)
INSERT INTO Customers (Customer_ID, Telephone) VALUES (DEFAULT, '123-456-7890')

I started with a fresh new database - I was able to do a couple of these inserts like so.

I start again withj a new database and import lots of records by running inserts with explicitly set values for Customer_ID.  This works fine.  But when I try to run the above INSERT (with DEFAULT instead of an explicitly set Customer_ID), I get the error, "duplicate key value violates unique constraint "custmoers_pkey".

I looked in pgAdmin III at the info associated with customers_pkey:
   customers_pkey:
          Name      customers_pkey
          OID         19027
          Index OID    19026
         Tablespace    pg_default
         Columns       Customer_id
         Unique?     Yes
         Primary?    Yes
        Clustered?      Yes
        Access method       btree
        Constraint
        System index?     Yes

Thanks for any help!
Mike
[+][-]03/12/08 07:08 AM, ID: 21106073Accepted Solution

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About this solution

Zone: PostgreSQL Database
Tags: postgres duplicate key value violates unique constraint serial column
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Solution Provided By: ivanovn
Participating Experts: 1
Solution Grade: A
 
 
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