| From: | Adrian Klaver <adrian(dot)klaver(at)aklaver(dot)com> |
|---|---|
| To: | Igor Korot <ikorot01(at)gmail(dot)com>, "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: Insert records in the tavke only if they are not exist |
| Date: | 2024-12-07 17:18:48 |
| Message-ID: | 8770b693-0c44-40de-b883-36cc5e718a0a@aklaver.com |
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| Thread: | |
| Lists: | pgsql-general |
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
adrian(dot)klaver(at)aklaver(dot)com
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