SQLSTATE of notice PGresult

From: Dmitriy Igrishin <dmitigr(at)gmail(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: SQLSTATE of notice PGresult
Date: 2010-08-20 10:13:45
Message-ID: AANLkTinU2S2vuYryvZgYp+q3few_M7MJnUf9pRigEP4f@mail.gmail.com
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Hey all,

Accordingly to the documentation of libpq, SQLSTATE code field "is not
localizable, and
is always present.". But it seems, in some cases it isn't. E.g.

/* the main code */
PGresult* res = Pg::PQexec(conn, "select 1");
Oid id = PQparamtype(res, 1);

/* the notice receiver */
void myNoticeReceiver(void *arg, const PGresult *res)
/* Presents - "NOTICE" */
const char* severity = Pg::PQresultErrorField(res, PG_DIAG_SEVERITY);

/* NOT presents - NULL. Why not "00000" ? */
const char* sqlstate = Pg::PQresultErrorField(res, PG_DIAG_SQLSTATE);

/* Presents - "parameter number 1 is out of range 0..-1" */
const char* primary = Pg::PQresultErrorField(res,

So, SQLSTATE field is not always presents.



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