Re: performance problems with bulk inserts/updates on tsrange with gist-based exclude constrains

-----Original Message-----
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Chris Withers
Sent: Friday, September 16, 2016 6:47 AM
To: John R Pierce <pierce@hogranch.com>; pgsql-general@postgresql.org
Subject: Re: [GENERAL] performance problems with bulk inserts/updates on tsrange with gist-based exclude constrains

On 16/09/2016 10:26, John R Pierce wrote:
> On 9/16/2016 2:23 AM, John R Pierce wrote:
>>
>> wait, what is a tsrange?   the standard textsearch data types in
>> postgres are tsvector and tsquery,
>
> never mind,  I should have known, its a timestamp range.   ...
>
>
> when you do updates, are you changing any of the indexed fields, or 
> just "value" ?
Yeah, it's a temporal table, so "updates" involve modifying the period column for a row to set its end ts, and then
insertinga new row with a start ts running on from that.
 

Of course, the adds are just inserting new rows.

cheers,

Chris

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So, what is the value for "end ts", when the record is inserted (the range just started)?

Regards,
Igor Neyman