Re: Add more information_schema columns

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От Peter Eisentraut
Тема Re: Add more information_schema columns
Дата
Msg-id 886f1293-7d76-7593-f8de-b01181b3c9d0@2ndquadrant.com
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Ответ на Re: Add more information_schema columns  (Michael Paquier <michael.paquier@gmail.com>)
Ответы Re: Add more information_schema columns
Список pgsql-hackers
On 2/6/18 17:15, Michael Paquier wrote:
> On Tue, Feb 06, 2018 at 03:16:59PM -0500, Robert Haas wrote:
>> What possible point can there be to such an expression?  It's always 0.
>>
>> rhaas=# select distinct tgtype::smallint & 1 & 66 from
>> generate_series(-32768,32767) tgtype;
>> ?column?
>> ----------
>>         0
>> (1 row)
> 
> Of course you are right here.  I just had a look at the patch again
> after waking up and the current patch builds action_order based only on
> action_timing and action_orientation, but it forgets event_manipulation.
> For example row and statement triggers are correctly filtered, but the
> ordering number includes both insert, update and delete types.  So what
> you need to use instead is (t.tgtype & 1), (t.tgtype & 66) as filter.

I think what I had meant to write was something like

    (t.tgtype & (1 | 66))

but maybe it's clearer to write it all out as you did.

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


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