Horton
Menu

RE: [GENERAL] Long update query ? (also Re: [GENERAL] CNF vs. DNF)

Taral <taral@mail.utexas.edu>

View thread
From: "Taral" <taral@mail.utexas.edu>
To: "Bruce Momjian" <maillist@candle.pha.pa.us>
Cc: "PostgreSQL-development" <hackers@postgreSQL.org>
Date: 1998-10-02T16:37:15Z
Lists: pgsql-hackers, pgsql-general 
> This is interesting.  Check CNF size and DNF size.  Choose smallest. 
> CNF uses existing code, DNF converts to UNIONs.  How do you return the
> proper rows with/without proper duplicates?

Create a temporary oid hash? (for each table selected on, I guess)

Taral