>> In which cases do we expect that hash indexes will beat btrees?
>
> Large table unique index equality search should be very fast with hashed
> index (and the only place where any advantage will be seen).
Yes, this is the exact use-case. Likewise, Dan has provided a good
description regarding the primary implementation goals of a disk-based
hash table.
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Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
Edison, NJ 08837 | http://www.enterprisedb.com/
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