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From: Adrian Klaver <[email protected]>
To: Igor Korot <[email protected]>
To: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Insert records in the tavke only if they are not exist
Date: Sat, 7 Dec 2024 09:18:48 -0800
Message-ID: <[email protected]> (raw)
In-Reply-To: <CA+FnnTwcNNGsM_ck0ye1OsUN3Jjg94PzGMKRm--2ojJM_zVOMA@mail.gmail.com>
References: <CA+FnnTwcNNGsM_ck0ye1OsUN3Jjg94PzGMKRm--2ojJM_zVOMA@mail.gmail.com>

On 12/6/24 19:36, Igor Korot wrote:
> Hi, All,
> 
> When my application starts up, ot creates some tables and insert records 
> in them.
> 
> When the app starts for the second time it should check if the tables 
> and the records in them are exist and skip the process.

Does this also apply to starts after the second time?

Is the data expected to change over time?

> 
> Everything is good, except what if I have a connection from 2 different 
> users?
Is it possible to have the app start up without external users connecting?

> 
> I can run this inside transaction, but will this be enough? Will stating 
> transaction lock the DB and the second user will wait for transaction to 
> complete?
> 
> Thank you.
> 

-- 
Adrian Klaver
[email protected]

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