RE: [GENERAL] Long update query ? (also Re: [GENERAL] CNF vs. DNF)
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Taral
Тема
RE: [GENERAL] Long update query ? (also Re: [GENERAL] CNF vs. DNF)
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000201bdee22$e9c8ed80$3b291f0a@taral
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RE: [HACKERS] RE: [GENERAL] Long update query ? (also Re: [GENERAL] CNF vs. DNF) "Taral" <taral@mail.utexas.edu>
Re: [HACKERS] RE: [GENERAL] Long update query ? (also Re: [GENERAL] CNF vs. DNF) Bruce Momjian <maillist@candle.pha.pa.us>
> 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
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