Re: todo: Hash index creation

Naz Gassiep <naz@mira.net> writes:
> As a result, when creating tables containing large blocks of text I wish
> to index, I've been using HASH as an index method. Please can we state
> in the manual that HASH index types are in a beta stage of development
> or something similar, or perhaps remove the manual entry altogether
> until HASH is at a point where it is usable in production.

Uh, the manual already does say
   Note: Testing has shown PostgreSQL's hash indexes to perform no better   than B-tree indexes, and the index size and
buildtime for hash indexes   is much worse. Furthermore, hash index operations are not presently   WAL-logged, so hash
indexesmight need to be rebuilt with REINDEX after   a database crash. For these reasons, hash index use is presently
discouraged.

under 11.2 Index Types, as well as various derogatory remarks elsewhere.
        regards, tom lane