Re: new aggregate functions v2
От | Robert Treat |
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Тема | Re: new aggregate functions v2 |
Дата | |
Msg-id | 200405041631.50845.xzilla@users.sourceforge.net обсуждение исходный текст |
Ответ на | new aggregate functions v2 (Fabien COELHO <coelho@cri.ensmp.fr>) |
Ответы |
Re: new aggregate functions v2
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Список | pgsql-patches |
On Sunday 02 May 2004 11:22, Fabien COELHO wrote: > Dear patchers, > > please find attached my second patch submission for adding > new aggregate functions: > > (1) boolean-and and boolean-or aggregates named bool_and and bool_or. > they should correspond to standard sql every and some/any aggregates. > they do not have the right name as there is a problem with > the standard and the parser for some/any. Tom also think that > the standard name is misleading because NULL are ignored. > > (2) bitwise integer aggregates named bit_and and bit_or for > int2, int4, int8 and bit types. They are not standard, but I find > them useful. I needed them once, and I'm not the first one to look for > them. > > > The patches adds: > > - 2 new very short strict functions for boolean aggregates in > src/backed/utils/adt/bool.c, > src/include/utils/builtins.h and src/include/catalog/pg_proc.h > > - the new aggregates declared in src/include/catalog/pg_proc.h and > src/include/catalog/pg_aggregate.h > > - some documentation and validation about these new aggregates. > > It also updates the catalog version. It validates for me. > > Have a nice day, Just a minor nibble, but could you add something to the documentation entries that these are postgresql implementation of the sql any/some/every aggregate functions. right now we have whole pages devoted to any/some for subqueries and arrays, I'd like to give people looking for the sql spec aggregate functions at least a chance of finding these. Robert Treat -- Build A Brighter Lamp :: Linux Apache {middleware} PostgreSQL
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