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From: Tom Lane <tgl@sss.pgh.pa.us>
To: ldh@laurent-hasson.com <ldh@laurent-hasson.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Zero throughput on a query on a very large table.
Date: Fri, 25 Jan 2019 13:34:01 -0500
Message-ID: <3630.1548441241@sss.pgh.pa.us> (raw)
In-Reply-To: <BN6PR15MB1185AA2A1C14BBF83AE9C69B859B0@BN6PR15MB1185.namprd15.prod.outlook.com>
References: <BN6PR15MB1185DB9366CD57353DDD22C4859B0@BN6PR15MB1185.namprd15.prod.outlook.com>
	<29285.1548397485@sss.pgh.pa.us>
	<BN6PR15MB11858B89B18A47FAB8430A34859B0@BN6PR15MB1185.namprd15.prod.outlook.com>
	<2201.1548439855@sss.pgh.pa.us>
	<BN6PR15MB1185AA2A1C14BBF83AE9C69B859B0@BN6PR15MB1185.namprd15.prod.outlook.com>

"ldh@laurent-hasson.com" <ldh@laurent-hasson.com> writes:
> Also, the original statement i implemented did not have all of that. This is the normalized SQL that Postgres now gives when looking at the indices.

[ squint... ]  What do you mean exactly by "Postgres gives that"?
I don't see any redundant COLLATE clauses in e.g. psql \d.

			regards, tom lane




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