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by Jweb_Guru
3778 days ago
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> Postgres has an extensible type system so Radix sort isn't really suitable, it really needs a comparison sort. That's not quite true. It supports string tries, for example (using SP-GIST). Such operations just have to be built for specific types. I think it would be more accurate to say that (AFAICT) Postgres doesn't currently have any way to extend the optimizer with custom plans (though it's been a very popular feature suggestion). |
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There's http://www.postgresql.org/docs/devel/static/custom-scan.html