On Jan 30, 2008 4:40 PM, Vyacheslav Kalinin <[EMAIL PROTECTED]> wrote:
> Most implementations of md5 internally consist of 3 functions: md5_init -
> which initializes internal context, md5_update - which accepts portions of
> data and processes them and md5_final - which finalizes the hash and
> r
Most implementations of md5 internally consist of 3 functions: md5_init -
which initializes internal context, md5_update - which accepts portions of
data and processes them and md5_final - which finalizes the hash and
releases the context. These roughly suit aggregate's internal functions
(SFUNC
I'm in need of an aggregate hash function. Something like "select
md5_agg(someTextColumn) from (select someTextColumn from someTable order by
someOrderingColumn)". I know that there is an existing MD5 function, but it
is not an aggregate. I have thought about writing a "concat" aggregate
functio
