| From: | Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com> |
|---|---|
| To: | Melvin Davidson <melvin6925(at)gmail(dot)com>, Killian Driscoll <killiandriscoll(at)gmail(dot)com> |
| Cc: | pgsql-general <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: Querying same lookup table with multiple columns based on another view |
| Date: | 2015-11-17 16:12:03 |
| Message-ID: | 564B51D3.4040804@BlueTreble.com |
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| Lists: | pgsql-general |
On 11/17/15 9:21 AM, Melvin Davidson wrote:
> Your problem is the use of SELECT *
I've often wished for a way to do *, but make changes to the results
that a normal * would give you. The two operations I've wished for are
to either remove some fields from the list, or to rename some fields.
I suspect you could create a function that would do this. You wouldn't
want to just blindly operate on a CREATE VIEW command because of things like
SELECT a.*, b.blah FROM (SELECT 1,2,3) a, b
but I think it might be possible to get the raw data out of the parser
(the grammar certainly provides it). It would probably involve C code
though.
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
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