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From: David G. Johnston <[email protected]>
To: Mauricio Fernandez <[email protected]>
Cc: Pgsql-admin <[email protected]>
Subject: Re: Script generation through psql
Date: Wed, 22 Oct 2025 06:54:13 -0400
Message-ID: <CAKFQuwbL+S0kQiSPt_SzXbOYf8FtrPLLTnUUHq_y1ooyXOffDQ@mail.gmail.com> (raw)
In-Reply-To: <CAMdfv4XRZXZmZm3NWmjPe69kaAnkRTX_8Jq1qp+Pet9mD4eCaw@mail.gmail.com>
References: <CAMdfv4XRZXZmZm3NWmjPe69kaAnkRTX_8Jq1qp+Pet9mD4eCaw@mail.gmail.com>

On Tuesday, October 21, 2025, Mauricio Fernandez <
[email protected]> wrote:
>
>
> 2. If in the psql script I want to pass variable values from an anonymous
> block to the rest of the script, how can I proceed?. For example
>
> DO $$
> DECLARE
>   vl_id integer;
> BEGIN
>  -- vl_id is set inside the procedure
>   call my_procedure(*vl_id*);
> END $$;
>

You’d have to do something like:

Execute format(‘set script.varname=%L’, value)

Within the DO block then you can do:

Select current_value(‘script.varname’) as psql_var \gexec

Outside of it.

A temporary table works too.

David J.


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