From: | Igor Neyman <ineyman(at)perceptron(dot)com> |
---|---|
To: | Chris Withers <chris(at)simplistix(dot)co(dot)uk>, John R Pierce <pierce(at)hogranch(dot)com>, "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: performance problems with bulk inserts/updates on tsrange with gist-based exclude constrains |
Date: | 2016-09-16 13:54:01 |
Message-ID: | MWHPR07MB2877649C8B70929DA95FC928DAF30@MWHPR07MB2877.namprd07.prod.outlook.com |
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Lists: | pgsql-general |
-----Original Message-----
From: pgsql-general-owner(at)postgresql(dot)org [mailto:pgsql-general-owner(at)postgresql(dot)org] On Behalf Of Chris Withers
Sent: Friday, September 16, 2016 6:47 AM
To: John R Pierce <pierce(at)hogranch(dot)com>; pgsql-general(at)postgresql(dot)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 inserting a new row with a start ts running on from that.
Of course, the adds are just inserting new rows.
cheers,
Chris
____________________________________________________________________________________________________
So, what is the value for "end ts", when the record is inserted (the range just started)?
Regards,
Igor Neyman
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