[openstack-dev] [DB][Migrations] Switching to using of Alembic
Boris Pavlovic
boris at pavlovic.me
Tue Jul 16 18:49:49 UTC 2013
David,
Btw it is my code ;), and in the same way we will implement alters in
Alembic.
Best regards,
Boris Pavlovic
On Tue, Jul 16, 2013 at 10:09 PM, David Ripton <dripton at redhat.com> wrote:
> On 07/16/2013 12:09 PM, Dolph Mathews wrote:
>
>>
>> On Tue, Jul 16, 2013 at 10:51 AM, Roman Podolyaka
>> <rpodolyaka at mirantis.com <mailto:rpodolyaka at mirantis.**com<rpodolyaka at mirantis.com>>>
>> wrote:
>>
>
> We are going to implement ALTER support in Alembic for SQLite in the
>> next few weeks.
>>
>>
>> I'm a little lost on this ... sqlite doesn't support ALTER, so what
>> exactly is being added to alembic? Is the alembic community receptive or
>> interested?
>>
>
> There is some code in Nova (on its way into Oslo) to work around not being
> able to alter tables in SQLite. It deletes the old table and adds the
> modified version as a new table. That's the best you can do without
> modifying SQLite itself.
>
> The Alembic README specifically mentions this SQLite issue and says "we
> will support these features provided someone takes the initiative to
> implement and test". So, yeah, he'll take these patches. Means we'll need
> to use the future version of Alembic with this feature, though.
>
>
> --
> David Ripton Red Hat dripton at redhat.com
>
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