public inbox for [email protected]  

help / color / mirror / Atom feed

From: James Coleman <[email protected]>
To: pgsql-hackers <[email protected]>
Subject: Should we document how column DEFAULT expressions work?
Date: Tue, 25 Jun 2024 16:51:05 -0400
Message-ID: <CAAaqYe-wQPbchCUE7pocPNEQ3PMY8a98Txmxc7q0+FvXtk1vvg@mail.gmail.com> (raw)

Hello,

It's possible I'm the only one who's been in this situation, but I've
multiple times found myself explaining to a user how column DEFAULT
expressions work: namely how the quoting on an expression following
the keyword DEFAULT controls whether or not the expression is
evaluated at the time of the DDL statement or at the time of an
insertion.

In my experience this is non-obvious to users, and the quoting makes a
big difference.

Is this something that we should document explicitly? I don't see it
called out in the CREATE TABLE reference page, but it's possible I'm
missing something.

Thanks,
James Coleman

view thread (5+ messages)  latest in thread

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: [email protected]
  Cc: [email protected]
  Subject: Re: Should we document how column DEFAULT expressions work?
  In-Reply-To: <CAAaqYe-wQPbchCUE7pocPNEQ3PMY8a98Txmxc7q0+FvXtk1vvg@mail.gmail.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by agora; see mirroring instructions
for how to clone and mirror all data and code used for this inbox