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From	Rene Romero Benavides
Subject	group number
Date	May 9, 2014 23:16:16
Msg-id	CANaGW0_KBbGbj1UbVnk6Ecu5AGHSqoxi==-Q6erDkdfaC=b_Nw@mail.gmail.com Whole thread Raw
Responses	Re: group number (Pavel Stehule <pavel.stehule@gmail.com>)
List	pgsql-sql

Thank you very much for your attention.

I'm facing a mental block to achieve this in a performant manner:

Input:

Desired output:

a 1

b 2

c 3

d 4

Any suggestions? Have a good day (night, afternoon or evening) and greetings from México City.

From: Andreas Joseph Krogh
Date: 04 May 2014, 21:03:30
Subject: Re: Optimize query for listing un-read messages

From: Pavel Stehule
Date: 09 May 2014, 23:22:47
Subject: Re: group number