Re: [SQL] Static variable inside PL/pgSQL (or) native C function

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От David G. Johnston
Тема Re: [SQL] Static variable inside PL/pgSQL (or) native C function
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Msg-id CAKFQuwbg1efML7CeSTrg8WZ_qOQfmVCYbVWdUXvmbWAsjnmADw@mail.gmail.com
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Ответ на [SQL] Static variable inside PL/pgSQL (or) native C function  (athinivas <athinivas@gmail.com>)
Ответы Re: [SQL] Static variable inside PL/pgSQL (or) native C function
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On Fri, Sep 29, 2017 at 6:46 AM, athinivas <athinivas@gmail.com> wrote:
Hi,

Is it possible to have static variable inside pgSQL C functions (or)
PL/pgSQL?? I'm having a use case where I need to update a counter inside the
function & it should be thread-safe.

I've tried using static variable inside the C function along with
pthread_mutex_lock/pthread_mutex_unlock. And found functions are not shared
among each other.


Don't know what's possible in C; pretty sure no in pl/pgsql.

Why not just use a table and SQL locking features?

Dave​

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