Safe operations?

From: Samuel Williams <space(dot)ship(dot)traveller(at)gmail(dot)com>
To: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Safe operations?
Date: 2018-08-13 00:41:34
Message-ID: CAHkN8V--O-PMk2h5mEhiXvH3Wk2L6k4wzAzjHt5MC3XpiYj3Jg@mail.gmail.com
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I wish the documentation would include performance details, i.e. this
operation is O(N) or O(1) relative to the number of rows.

I found renaming a table was okay.

How about renaming a column? Is it O(1) or proportional to the amount of
data?

Is there any documentation about this?

Thanks
Samuel

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