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+FnnTwkJtLq0AvY6UB7dUrdXsO28PGSqX-wBOy+LT6Ei1jD4A@mail.gmail.com>
References: <CA+FnnTwkJtLq0AvY6UB7dUrdXsO28PGSqX-wBOy+LT6Ei1jD4A@mail.gmail.com>
Comments: In-reply-to Igor Korot <ikorot01@gmail.com>
	message dated "Wed, 05 Mar 2025 01:42:13 -0600"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <225732.1741142220.1@sss.pgh.pa.us>
Date: Tue, 04 Mar 2025 21:37:00 -0500
Message-ID: <225733.1741142220@sss.pgh.pa.us>
Archived-At: <https://www.postgresql.org/message-id/225733.1741142220%40sss.pgh.pa.us>
Precedence: bulk

Igor Korot <ikorot01@gmail.com> writes:
>     binaryIntVal = htonl( (uint32_t) type );
>     paramValues[0] = (char *) &binaryIntVal;
>     paramLengths[0] = sizeof( binaryIntVal );
>     paramFormats[0] = 1;

You're apparently trying to pass this parameter as an int4 ...

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

... 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.

			regards, tom lane