Re: new aggregate functions v1
От | Fabien COELHO |
---|---|
Тема | Re: new aggregate functions v1 |
Дата | |
Msg-id | Pine.GSO.4.58.0405021049340.27282@chailly99 обсуждение исходный текст |
Ответ на | Re: new aggregate functions v1 (Alvaro Herrera <alvherre@dcc.uchile.cl>) |
Ответы |
Re: new aggregate functions v1
Re: new aggregate functions v1 |
Список | pgsql-patches |
Dear Alvaro, > > (2) bitwise integer aggregates named bit_and and bit_or for > > int2, int4, int8 and bit types. They are not standard, > > however they exist in other db (eg mysql), and I needed them > > for some other stuff. > > I'm sure people won't like to add functions just because "some other DB > has them". I develop them because I NEEDED them, NOT because they are available in mysql and I would want compatibility. I needed them for some queries over pg_catalog, as acl are encoded as bitfields. So the addition is about functionnality, not compatibility. The argument about mysql is rather to show that other people in the world found these functions also useful, and to justify the name I chose. You may also notice that the impact in close to void, there are two lines added for each of these bit_* functions. I'm not going to develop an external package for 16 lines of code. -- Fabien Coelho - coelho@cri.ensmp.fr
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