Re: Review: B-Tree emulation for GIN
От | Teodor Sigaev |
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Тема | Re: Review: B-Tree emulation for GIN |
Дата | |
Msg-id | 4974C96E.7060003@sigaev.ru обсуждение исходный текст |
Ответ на | Re: Review: B-Tree emulation for GIN (Jeff Davis <pgsql@j-davis.com>) |
Ответы |
Re: Review: B-Tree emulation for GIN
Re: Review: B-Tree emulation for GIN Re: Review: B-Tree emulation for GIN Re: Review: B-Tree emulation for GIN |
Список | pgsql-hackers |
> gin_numeric_cmp() can be called from regular SQL. I missed this before, > but that function will segfault if you call gin_numeric_cmp(NULL, 1) (in > v0.7 at least). Fixed, gin_numeric_cmp is marked as strict. > And how does GIN handle SQL NULL values in the column? Does it index > them at all, or just ignore them? SQL NULL: GIN doesn't support it (amindexnulls/amsearchnulls == false) C NULL: NULL-numeric could be returned only by gin_extract_query_numeric which cannot be called by user directly because of internal type of argument. GIN doesn't do anything with values returned by gin_extract_query_numeric except providing they as an argument for comparing functions. -- Teodor Sigaev E-mail: teodor@sigaev.ru WWW: http://www.sigaev.ru/
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