From: Tom Lane <tgl@sss.pgh.pa.us>
To: Igor Korot <ikorot01@gmail.com>
cc: "pgsql-generallists.postgresql.org" <pgsql-general@lists.postgresql.org>
Subject: Re: Error on query execution
In-reply-to: <CA+FnnTwCMDVA4VHSsjv3OpFrrnjpyAhiMZyW0mu0X=fVmsfUpA@mail.gmail.com>
References: <CA+FnnTwkJtLq0AvY6UB7dUrdXsO28PGSqX-wBOy+LT6Ei1jD4A@mail.gmail.com> <225733.1741142220@sss.pgh.pa.us> <CA+FnnTwCMDVA4VHSsjv3OpFrrnjpyAhiMZyW0mu0X=fVmsfUpA@mail.gmail.com>
Comments: In-reply-to Igor Korot <ikorot01@gmail.com>
	message dated "Thu, 06 Mar 2025 15:54:41 -0600"
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Date: Thu, 06 Mar 2025 12:00:16 -0500
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Igor Korot <ikorot01@gmail.com> writes:
> On Tue, Mar 4, 2025 at 8:37 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
>> ... but given that you didn't specify any data type, I think the
>> parser will fall back to assuming that $1 is the same type as
>> "abf_type", whatever that is.  Passing data in binary is not at all
>> forgiving about getting the data type right.

> Changing the line above to read:

>     res = PQexecParams( m_db, "SELECT * FROM abcatfmt WHERE abf_type =
> $1::smallint", 1, nullptr, paramValues, paramLengths, paramFormats, 1
> );

That just makes it explicit that the query is expecting an int16.
You're still passing an int32.  You need to either change the
parameter setup code to pass an int16, or make the query look
more like

    res = PQexecParams( m_db, "SELECT * FROM abcatfmt WHERE abf_type =
    $1::integer", 1, nullptr, paramValues, paramLengths, paramFormats, 1);

			regards, tom lane