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From: Ivan Shershnev <[email protected]>
To: [email protected]
Subject: Seamless age (xid) replacement
Date: Wed, 4 Dec 2024 16:51:41 +0100
Message-ID: <CAJjhk3Divm6hpx395nJFdN2J_ytpFVbmOp00GWOtE7D=ppVzAA@mail.gmail.com> (raw)

Hello!

I need to use the 'age (xid)' function, but I have noticed that it is
deprecated without a clear alternative. I know that xid is also kinda
deprecated, so it makes sense not to use it. I can get xid8 from
'pg_current_xact_id()', which replaced 'txid_current()', but cannot use it
right away with 'age'.

I can cast xid8 that I've got to xid and pass to 'age', but 1) I have no
idea if it's the right way, i.e. it's promised to work or will work anyway
by accident, 2) 'age' is anyway deprecated.

I can re-implement 'age' by myself. It's (mostly) a subtraction after all.
But it would mean that I inline implementation in place of "api" function
call which is not always a great idea.

Could anyone advise, please?

Kind regards,
Ivan

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