Re: [NOVICE] LibPQ, C, BLOB or BYTEA - Mailing list pgsql-novice

Merlin Moncure <mmoncure@gmail.com> writes:
> On Mon, Oct 23, 2017 at 7:00 AM, Ruslan R. Laishev <zator@yandex.ru> wrote:
>> Is there a way to pass BYTEA values w/o formating to escape/hex binary ASCII
>> strings from C to plpqsql stored function ?

> From a C client application?  Yes, you need to use the binary wire format.

Yeah, specifically see PQexecParams() or one of its sibling functions.
You need to execute some command like "SELECT myfunc($1::bytea)" and
then pass the parameter value in binary format.
        regards, tom lane


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