Re: Expressional Indexes - Mailing list pgsql-sql

From Bruce Momjian
Subject Re: Expressional Indexes
Date
Msg-id 200310222037.h9MKb2320189@candle.pha.pa.us
Whole thread Raw
In response to Re: Expressional Indexes  (Josh Berkus <josh@agliodbs.com>)
List pgsql-sql
Josh Berkus wrote:
> Tom,
> 
> > Mainly that "expressional" is a made-up word.
> 
> So?   We're in the tech biz, Tom.   New-coined words are expected.  And that 
> way nobody will expect it to mean something else, since we made it up. 
> -- H. Dumpty, Q.E.D.
> 
> > I have been considering using "calculated index" or "computed index"
> > but dunno if that really conveys anything.
> 
> Well, "Expression Indexes" is the most accurate.  Or "Expression-Based 
> Indexes."

Computed index sound too much like there is computation done during the
index lookup, which there isn't, and it sounds like it would behave
differently from a normal index, which it doesn't.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
359-1001+  If your life is a hard drive,     |  13 Roberts Road +  Christ can be your backup.        |  Newtown Square,
Pennsylvania19073
 


pgsql-sql by date:

Previous
From: Josh Berkus
Date:
Subject: Re: Query planner: current_* vs. explicit date
Next
From: Peter Eisentraut
Date:
Subject: Re: Expressional Indexes