On 12/2/16 9:24 AM, Robert Haas wrote:
On Fri, Dec 2, 2016 at 11:12 AM, Corey Huinker <corey.huin...@gmail.com> wrote:
In order for me to understand how high the bar has been set, can you
(Robert/Tom mostly, but I welcome any responses) explain what you mean by
"full-blown expression language"? What constructs must it include, etc?

I mostly mean it should be based on flex and bison, not "this is so
simple I can just hand-roll it".  I don't think it has much chance of
staying that simple.

It might be worth looking at other simplistic languages for guidance. bash comes to mind, though there's GPL issues there. csh/tcsh don't have those problems, and perhaps some of their grammar could be stolen.

I find it interesting that this is kind of the opposite problem that most pl's face: how to fit the database access paradigm into the language with the minimal amount of extra effort for users.

http://cvsweb.netbsd.org/bsdweb.cgi/src/bin/csh/?only_with_tag=MAIN
https://github.com/tcsh-org/tcsh
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Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
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