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From: Heikki Linnakangas <[email protected]>
To: Peter Eisentraut <[email protected]>
To: Nikolay Samokhvalov <[email protected]>
To: Tom Lane <[email protected]>
To: Kirk Wolak <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Pavel Stehule <[email protected]>
Cc: [email protected]
Cc: Laurenz Albe <[email protected]>
Subject: Re: Proposal: %T Prompt parameter for psql for current time (like Oracle has)
Date: Thu, 23 Feb 2023 14:09:19 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <CACLU5mSRwHr_8z=enMj-nXF1tmC7+Jn5heZQNiKuLyxYUtL2fg@mail.gmail.com>
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	<CANNMO+KqqM0YpVUmVDec+9nku9ai9T=Y5Tp=pZ0rp1jR3d8kqA@mail.gmail.com>
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	<[email protected]>

On 23/02/2023 13:20, Peter Eisentraut wrote:
> On 22.02.23 19:14, Heikki Linnakangas wrote:
>> How about a new backslash command or psql variable to show how long the
>> previous statement took? Something like:
> 
> If you don't have \timing turned on before the query starts, psql won't
> record what the time was before the query, so you can't compute the run
> time afterwards.  This kind of feature would only work if you always
> take the start time, even if \timing is turned off.

Correct. That seems acceptable though? gettimeofday() can be slow on 
some platforms, but I doubt it's *that* slow, that we couldn't call it 
two times per query.

- Heikki

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