Hannu Krosing <[EMAIL PROTECTED]> writes:
> Ühel kenal päeval, E, 2007-09-03 kell 19:55, kirjutas Tom Lane:
>> No, because part of the deal is that you can do lookups using only the
>> leading index columns.  At least, all the existing multicolumn index
>> types can do that.

> One approahc is not to mix hashes, but to partition the hash, so that
> each column gets its N bits in the hash. 

How does that help?  You still need all the keys to find out which
bucket to look in.

                        regards, tom lane

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