Re: [HACKERS] generated columns

On 13 September 2017 at 09:09, Andreas Karlsson <andreas@proxel.se> wrote:
> On 09/13/2017 04:04 AM, Simon Riggs wrote:
>>
>> On 31 August 2017 at 05:16, Peter Eisentraut
>> <peter.eisentraut@2ndquadrant.com> wrote:
>>>
>>> - index support (and related constraint support)
>>
>>
>> Presumably you can't index a VIRTUAL column. Or at least I don't think
>> its worth spending time trying to make it work.
>
>
> I think end users would be surprised if one can index STORED columns and
> expressions but not VIRTUAL columns. So unless it is a huge project I would
> say it is worth it.

It must be stored in the index certainly. I guess virtual is similar
to expression indexes then.

-- 
Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services


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