Re: Primary keys
Re: Primary keys
- Subject: Re: Primary keys
- From: Fabian Peters <email@hidden>
- Date: Thu, 02 Oct 2014 11:43:50 +0200
Hi Mark,
For postgresql you could add a column "serial". When the column is added, it is populated with values by postgres. You could then use migration's "setPrimaryKey" and "dropPrimaryKey".
This is totally untested…
Fabian
Am 02.10.2014 um 11:00 schrieb Mark Wardle <email@hidden>:
> Dear all,
>
> I need to add a new primary key to a table that already contains data.
>
> Is it possible to use migrations to add this and have the column auto-populated with a serial number?
>
> My other plan was to create an integer column and then, in code, iterate through the objects manually setting the serial integer, and then later on migrating that to a primary key. Would this then break primary key generation for newly created objects?
>
> All advice appreciated!
>
> Many thanks,
>
> Mark
>
>
> --
> Dr. Mark Wardle
> Consultant Neurologist, University Hospital Wales, Cardiff, UK
> Email: email@hidden or email@hidden Twitter: @mwardle
> Telephone: 02920745274 (secretary) or facsimile: 02920744166
>
>
>
>
>
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| | >Primary keys (From: Mark Wardle <email@hidden>) |