Qualifying columns to improve performance?

From: Arn Klammer <Arn.Klammer_at_austrac.gov.au>
Date: Mon, 02 Apr 2001 19:04:01 -0700
Message-ID: <F001.002DF218.20010402183021@fatcity.com>

At a course some years ago, we were told that in join statements, we should qualify ALL our column names with the appropriate table name, not just those that may be ambiguous. The reason was that the parser would not need to spend time checking multiple tables to determine the table to which each column belongs.
 

Is this still a valid rule?
 

Does this apply to statements in PL/SQL procedures/packages?  Or are they different, because they are checked at compile time? 
 

-a

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Received on Mon Apr 02 2001 - 21:04:01 CDT