Thanks. So round(before1550/colfreq::numeric, 2) produces the desired result.

The explanations and examples of string functions in the Postgres documentation are a model of clarity. The explanations and examples of basic arithmetic operations are not. There is room for improvement there. From: "David G. Johnston" <david.g.johns...@gmail.com> Date: Wednesday, March 7, 2018 at 11:23 AM To: Martin Mueller <martinmuel...@northwestern.edu> Cc: "pgsql-general@lists.postgresql.org" <pgsql-general@lists.postgresql.org> Subject: Re: a very primitive question about division On Wed, Mar 7, 2018 at 10:21 AM, Martin Mueller <martinmuel...@northwestern.edu<mailto:martinmuel...@northwestern.edu>> wrote: Given two values defined as integers, how do I divide one by the other and get an answer with two decimals, e.g 3 /4 = 0.75. Case one of them to numeric. select 3/4::numeric David J.