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Insert records in the tavke only if they are not exist

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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.

Everything is good, except what if I have a connection from 2 different users?

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.


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