Re: Review: B-Tree emulation for GIN
От | Jeff Davis |
---|---|
Тема | Re: Review: B-Tree emulation for GIN |
Дата | |
Msg-id | 1232428459.23316.0.camel@jdavis обсуждение исходный текст |
Ответ на | Re: Review: B-Tree emulation for GIN (Teodor Sigaev <teodor@sigaev.ru>) |
Список | pgsql-hackers |
On Mon, 2009-01-19 at 21:41 +0300, Teodor Sigaev wrote: > > 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. Ok, looks good. I updated the wiki to show this as the latest version of the patch. Thanks,Jeff Davis
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