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From: Scott Ribe <scott_ribe@elevated-dev.com>
To: Wells Oliver <wells.oliver@gmail.com>
Cc: nunks <nunks.lol@gmail.com>
Cc: pgsql-admin <pgsql-admin@postgresql.org>
Subject: Re: [pgsql-admin] "Soft-hitting" the 1600 column limit
Date: Wed, 6 Jun 2018 12:46:30 -0600
Message-ID: <61E35AE9-8569-40C4-8D30-7999E006C0FA@elevated-dev.com> (raw)
In-Reply-To: <CAOC+FBX6JLtcz-vO7K1rB-qmn23MyVgHya5xgcYLX-yUYoM_xw@mail.gmail.com>
References: <CACq6szQbQDG6_mThyH32=6J0e99-KdqOrhZMm9QwvGoVFzNbBw@mail.gmail.com>
	<CAOC+FBXehj4X2DMfytnPKHRWrWWZjq1G9OfUXsMop5Tex7hrvg@mail.gmail.com>
	<3C61E858-5CA7-405D-B32A-B4C89D1AC62E@elevated-dev.com>
	<CACq6szR7Q--tw67ZJL4-T59oAXCLXgmCDFVh=FunY3N4HCDLXg@mail.gmail.com>
	<CAOC+FBX6JLtcz-vO7K1rB-qmn23MyVgHya5xgcYLX-yUYoM_xw@mail.gmail.com>

References to them persist in system catalogs. Otherwise, dropping a column would require rewriting every row in the table.

--
Scott Ribe
scott_ribe@elevated-dev.com
https://www.linkedin.com/in/scottribe/



> On Jun 6, 2018, at 12:43 PM, Wells Oliver <wells.oliver@gmail.com> wrote:
> 
> Just curious then, in what meaningful way do dropped columns persist, what are the reasons?
> 





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