Forum OpenACS Q&A: Response to PostgreSQL nested loops processing

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4: Response to PostgreSQL nested loops processing (response to 1)
Posted by Andrei Popov on 10/17/02 12:58 PM
How about removing a <>? I remember reading somewhere that in SQL "negative" statements (e.g. NOT NULL, NOT IN, <>) are sever performance drain -- it is easier to pick things that are equal, than not...