Thread

Re: errposition

Tom Lane <tgl@sss.pgh.pa.us> — 2026-05-08T04:32:54Z

John Naylor <johncnaylorls@gmail.com> writes:
> In doc/src/sgml/sources.sgml under "available auxiliary routines for
> ereport", we have

> "errposition(int cursorpos) specifies the textual location of an error
> within a query string. Currently it is only useful for errors detected
> in the lexical and syntactic analysis phases of query processing."

> ...but I don't see that function used that way. It seems this should
> be parser_errposition instead. I'll go make it so unless someone tells
> me I'm missing something.

errposition is the underlying function exposed by elog.c, and
that is what this documentation is intending to document.
parser_errposition is a wrapper that is specific to usages in
src/backend/parser/.  It might be (I didn't check) that all existing
calls to errposition go through parser_errposition, but that seems
like a happenstance not a reason to contort the documentation.

			regards, tom lane