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Re: MoveToInsertRow on a table without a primary key

From: Dave Cramer <pg(at)fastcrypt(dot)com>
To: Andrew Hastie <andrew(at)ahastie(dot)net>
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: MoveToInsertRow on a table without a primary key
Date: 2012-03-14 14:46:59
Message-ID: CADK3HH+YT2TJKG-4zOQ-G28NivBD2AMbqSYhGv3DtDeyuOqN9g@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-jdbc
Unfortunately the API docs are not particularly great.

This http://docs.oracle.com/javase/1.3/docs/guide/jdbc/getstart/resultset.html
gives a strong suggestion to use a primary key

Dave Cramer

dave.cramer(at)credativ(dot)ca
http://www.credativ.ca



On Wed, Mar 14, 2012 at 10:46 AM, Andrew Hastie <andrew(at)ahastie(dot)net> wrote:
> Not sure if this helps but:-
>  1. Examination of the JBC4 spec makes no mention of a PK being a
> pre-requisite for an updatable ResultSet. It implies "cursors" or similar
> are employed.
>  2. MS SQLServer 2008 and IBM DB2 for Linux/Unix/Windows also have a similar
> restriction.
>
> Anyway, a table with no PK is bad design of your database tables anyway ;-)
>
> Andrew
>
>
> On 14/03/12 14:05, Dave Cramer wrote:
>>
>> Pretty sure a primary key is a pre-requisite for an updatable result set.
>>
>> Dave Cramer
>>
>> dave.cramer(at)credativ(dot)ca
>> http://www.credativ.ca
>>
>>
>>
>> On Wed, Mar 14, 2012 at 9:03 AM,<patrick(dot)balleux(at)gmail(dot)com>  wrote:
>>>
>>> Hello all,
>>>
>>> I have a table in a database that does not have a primary key.  In the
>>> process of migrating data from Oracle to Postgres, I am using ResultSets to
>>> populate the Postgres tables.
>>>
>>> Basically, all is working well except for tables that do not have a
>>> primary key.  When I reach the "movetoinsertrow" instruction in my code, the
>>> jdbc driver raises an exception about the missing primary key.
>>>
>>> The workaround would be to add a temporary primary key to such table, but
>>> I want to avoid that.  I did the same test with HSQLDB and it works.  To me,
>>> it seems like a bug.
>>>
>>> I googled around for the solution, but found nothing.
>>>
>>> Any tips?
>>>
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>
>
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Subject: Bug with PreparedStatements using EXTRACT function
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