Thread

1. errposition

   John Naylor <johncnaylorls@gmail.com> — 2026-05-08T04:24:02Z

   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.
   
   -- 
   John Naylor
   Amazon Web Services
   
   
   
   

2. 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