Hannu Krosing <[EMAIL PROTECTED]> writes: > Ãhel 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 ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings