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From: Tom Lane <[email protected]>
To: Igor Korot <[email protected]>
Cc: Laurenz Albe <[email protected]>
Cc: pgsql-generallists.postgresql.org <[email protected]>
Subject: Re: PQexecPrepared() question
Date: Sun, 21 Dec 2025 00:39:23 -0500
Message-ID: <[email protected]> (raw)
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Igor Korot <[email protected]> writes:
> I added the following code in my app:
>     res = PQexec( m_db, "SHOW client_encoding" );
>     auto value = PQgetvalue( res, 0, 0 );
>     PQclear( res );
> and the value of the "value" variable is "UTF8".

Okay ...

> The exact error message is:
> ERROR: invalid byte sequence for encoding UTF8: 0xdf
> CONTEXT: unnamed portal parameter $1
> on the INSERT.

client_encoding governs both the encoding that the server will
send, and the encoding that it expects to receive.  You are
sending a parameter string that is not valid UTF8.

			regards, tom lane






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