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help / color / mirror / Atom feedFrom: Igor Korot <[email protected]>
To: Tom Lane <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: Error on query execution
Date: Wed, 5 Mar 2025 17:10:30 -0600
Message-ID: <CA+FnnTw5xKm-E2X72qHANha-trXrJmumZt6KGa9tPsSAoZDj_A@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <CA+FnnTwkJtLq0AvY6UB7dUrdXsO28PGSqX-wBOy+LT6Ei1jD4A@mail.gmail.com>
<[email protected]>
Hi, Tom,
On Tue, Mar 4, 2025 at 8:37 PM Tom Lane <[email protected]> wrote:
>
> Igor Korot <[email protected]> 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.
abf_type is declared as smallnt:
queries.push_back( L"CREATE TABLE IF NOT EXISTS abcatfmt(abf_name
char(30) NOT NULL, abf_frmt char(254), abf_type smallint, abf_cntr
integer, PRIMARY KEY( abf_name ));" );
Thank you.
>
> regards, tom lane
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Subject: Re: Error on query execution
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