maria-developers team mailing list archive

[Chris Church <chris.church@xxxxxxxxxxxxx>]

Hi Sergei,

Oracle's limitation is different.

>From http://mysqlserverteam.com/generated-columns-in-mysql-5-7-5/

The length of the generation expressions for a table are subject to the
> limitations of the .frm file, and thus they can’t be longer than 64K in
> total. So you can have one field with a generation expression length of
> 64K, or you can have 30 fields with an average expression length of 2K each.


In normal practice, this is significantly higher than the MariaDB limit.

Thanks,

Chris


On Wed, Apr 20, 2016 at 5:03 PM, Sergey Petrunia <sergey@xxxxxxxxxxx> wrote:

> https://mariadb.com/kb/en/mariadb/virtual-computed-columns/ says
>
> the expression cannot exceed 252 characters in length.
>
> I've got a complaint about this limitation.
>
> Do we have any plans to remove it? (Does Oracle have it in their variant of
> this feature?)
>
> BR
>  Sergei
> --
> Sergei Petrunia, Software Developer
> MariaDB Corporation | Skype: sergefp | Blog: http://s.petrunia.net/blog
>
>
>


-- 

*Christopher Church*
Architect | Patientco
chris.church@xxxxxxxxxxxxx
888.747.2455 x


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