Re: Unique Index Disk Consumption

From: Ron <ronljohnsonjr(at)gmail(dot)com>
To: pgsql-admin(at)lists(dot)postgresql(dot)org
Subject: Re: Unique Index Disk Consumption
Date: 2019-03-27 13:59:54
Message-ID: 9008124b-a440-9419-1a0f-fffd711fe476@gmail.com
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On 3/27/19 8:50 AM, Moin Akther wrote:
> Dear Experts,
>
> on a table we have 2 unique index's and when i check the table and unique
> index size, size of index's are twice the size of table.
>
> if have drop both the unique index's and create the new one but again
> after some time index size is almost twice the size of table.
>
> Is Unique Index consume more disk space ?

How big is each row?

Are the rows compressible?

How big are PK fields?

>
> How can i manage this kind scenario ? as droping and recreating unique
> index on the existing data is taking lot of time.

Why do you *need* to?

--
Angular momentum makes the world go 'round.

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