Re: proposal: minscale, rtrim, btrim functions for numeric

Tom Lane <tgl@sss.pgh.pa.us>

From: Tom Lane <tgl@sss.pgh.pa.us>
To: Pavel Stehule <pavel.stehule@gmail.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Marko Tiikkaja <marko@joh.to>
Date: 2019-11-09T20:34:46Z
Lists: pgsql-hackers
Pavel Stehule <pavel.stehule@gmail.com> writes:
> four years ago Marko Tiikkaja send a patch for numeric_trim functions. This
> functions removed ending zeroes from numeric value. This is useful feature,
> but there was not any progress on this patch. I think so this feature can
> be interesting, so I would to revitalize this patch.

> Original discussion
> https://www.postgresql-archive.org/Add-numeric-trim-numeric-td5874444.html

A more useful link is
https://www.postgresql.org/message-id/flat/564D3ADB.7000808%40joh.to
and the earlier discussion is at
https://www.postgresql.org/message-id/flat/5643125E.1030605%40joh.to

Re-reading that thread, I don't really think there's much support for
anything beyond the minscale() function.  The rest are just inviting
confusion with string-related functions.  And I really don't like
establishing a precedent that btrim() and rtrim() are the same.

			regards, tom lane



Commits

  1. Add functions min_scale(numeric) and trim_scale(numeric).