Hi Postgres hackers,
ereport() can accept an error code. For example:
ereport(FATAL,
(errcode(ERRCODE_TOO_MANY_CONNECTIONS),
errmsg("number of requested standby connections
exceeds \"max_wal_senders\" (currently %d)",
max_wal_senders)));
In this case the error happens during connection initialization, outside
of an SQL query. I.e. PGresult is not available.
I suspect that the error code is available on the client as
PGconn->last_sqlstate however it is private and I can't find any public
API to fetch it.
Does libpq have an API to extract this code?
---
Sergey
