public inbox for [email protected]
help / color / mirror / Atom feedFrom: Lok P <[email protected]>
To: sud <[email protected]>
To: Greg Sabino Mullane <[email protected]>
Cc: pgsql-general <[email protected]>
Subject: Re: Column type modification in big tables
Date: Sun, 11 Aug 2024 02:36:42 +0530
Message-ID: <CAKna9Vb0ABStAWogCsXK+jTT9ZuLESJ0_-r3Wtvd=rZpYMYwxw@mail.gmail.com> (raw)
In-Reply-To: <CAD=mzVVS6HbV25M7EA+TJYk22G=GJvQK5Gbe9eeifYSmadYtNA@mail.gmail.com>
References: <CAKna9VaJ_qHKBnw4O-VT3xGmzqThCuZ=LFXx-hPdw7E6RoqmeA@mail.gmail.com>
<CAD=mzVUmXmkdvvMG30G1=D4Kq3WqnzGo=0ov9JnRCs1p=KJiTQ@mail.gmail.com>
<CAKna9VZRc4+Vzbt6qPGMCauE84isPtz-wE_KX9AOt7WKfhwjiQ@mail.gmail.com>
<CAD=mzVUX13ZM16kP4QhY+F5XiLr=ezCXftKOTKA4eUvhphgOJw@mail.gmail.com>
<CAKna9Vb_mx+dX02XOV6mpr8RFC-5io38kM6=4xRHQj_MUvQ+aQ@mail.gmail.com>
<CAKAnmmJ6fqyYafLB_im75oxxfTuCLUY0ftBPU57pUm0g+pm6FQ@mail.gmail.com>
<CAKna9VZJ4fginFJZenGQxWs9eAw9Z8g-YkdnOFcie5RvuJ=5OQ@mail.gmail.com>
<CAKAnmmLv72uk1p8+zmWpkC+BTatrdmRe_NpRbwRsi1LAU-cJFQ@mail.gmail.com>
<CAKna9VZGwtNx9NAZ0QjdT-WhtFETAaFzpUsvM6R90mjaAoP3vA@mail.gmail.com>
<CAD=mzVVS6HbV25M7EA+TJYk22G=GJvQK5Gbe9eeifYSmadYtNA@mail.gmail.com>
On Sat, Aug 10, 2024 at 5:47 PM sud <[email protected]> wrote:
>
>
> My 2cents.
> If you have enough time then from a simplicity point of view, your single
> line alter command may look good, but how are you going to see the amount
> of progress it has made so far and how much time it's going to take to
> finish. And you got ~6hrs of down time but if it fails at 5th hour then you
> will be in a bad position.
>
>
>
Does it mean that , if we get enough downtime then , we should rather go
with the option of recreating the table from scratch and populating the
data from the existing table and then rename it back? It does look more
complicated considering many steps like creating indexes, constraints back
and renaming it and then running vacuum and analyze etc.
Can someone through some light , in case we get 5-6hrs downtime for this
change , then what method should we choose for this Alter operation?
view thread (22+ 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], [email protected], [email protected], [email protected]
Subject: Re: Column type modification in big tables
In-Reply-To: <CAKna9Vb0ABStAWogCsXK+jTT9ZuLESJ0_-r3Wtvd=rZpYMYwxw@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