table as hashtable

["Anton Andreev" <Anton.Andreev@xxxxxxxxxxxxxxxx>]

 Hi,

Can I use a Postgre table as hashtable\\?

when I do select where column='test', I want this to be done by hashtable,
not linear, not by b-tree. I do not need to sort, sum or else I just want
to get the value as fast as possible.

10x to anyone answering me

Cheers,
Anton