Re: Reverse Key Index

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



"Sven R. Kunze" <srkunze@xxxxxxxxxxxx> writes:
> does PostgreSQL support the concept of reverse key indexing as described 
> here? I couldn't find any documentation on this yet.

> http://www.toadworld.com/platforms/oracle/w/wiki/11075.reverse-key-index-from-the-concept-to-internals.aspx

There's nothing built-in for that (and frankly, it doesn't sound useful
enough that we'd ever add it).  You could get the effect easily enough
with an expression index on a byte-reversing function.  A related thing
that people often do is create an index on a hash function.

			regards, tom lane


-- 
Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance




[Postgresql General]     [Postgresql PHP]     [PHP Users]     [PHP Home]     [PHP on Windows]     [Kernel Newbies]     [PHP Classes]     [PHP Books]     [PHP Databases]     [Yosemite]

  Powered by Linux