| From: | "David G(dot) Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Sergey Fukanchik <s(dot)fukanchik(at)postgrespro(dot)ru>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Is there public API to fetch errcode? |
| Date: | 2025-10-12 17:37:06 |
| Message-ID: | CAKFQuwZ0twxnwfaMq-6ZuK3iPR9ny=YV=r8p8Dz08MGi7HPiuA@mail.gmail.com |
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On Sun, Oct 12, 2025 at 1:27 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Sergey Fukanchik <s(dot)fukanchik(at)postgrespro(dot)ru> writes:
> > Does libpq have an API to extract this code?
>
> PQresultErrorField(res, PG_DIAG_SQLSTATE) should do, no?
>
>
I believe the call flow is the following - no "res"/result is ever
constructed:
PGconn *PQconnectdb(const char *conninfo);
ConnStatusType PQstatus(const PGconn *conn);
// Connection_Bad
char *PQerrorMessage(const PGconn *conn);
// Obtains the error message; but there seems to be no equivalent of
PQresultErrorField (e.g. PQconnErrorField) to obtain the SQLState field
component thereof
David J.
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