| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
| Cc: | "Ruslan R(dot) Laishev" <zator(at)yandex(dot)ru>, pgsql-novice <pgsql-novice(at)postgresql(dot)org> |
| Subject: | Re: LibPQ, C, BLOB or BYTEA |
| Date: | 2017-10-23 14:03:38 |
| Message-ID: | 13714.1508767418@sss.pgh.pa.us |
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| Lists: | pgsql-novice |
Merlin Moncure <mmoncure(at)gmail(dot)com> writes:
> On Mon, Oct 23, 2017 at 7:00 AM, Ruslan R. Laishev <zator(at)yandex(dot)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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