Re: [GENERAL] intarray index vs gin index
intarray. My question is whether I still should use intarray for indexing (if yes then either I should use GIST or GIN) or maybe GIN index is faster than GIST+intarray / GIN+intarray. Yes, with intarray you can use GiST/GIN indexes which you wish -- Teodor Sigaev E-mail: [EMAIL PROTECTED] WWW: http://www.sigaev.ru/ ---(end of broadcast)--- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
[GENERAL] intarray index vs gin index
Hello, I'm trying to update my database to 8.2 version and have some problems with intarray module. As far I know PG 8.2 contains many features that are contained within intarray - indexing array fields (using gin), operators etc. Currently (in PostgreSQL 8.1) I'm using intarray not only for indexing (but this is the main feature) but also I'm using functions (like count, sort...) and operators (+, -) that are provided by intarray. My question is whether I still should use intarray for indexing (if yes then either I should use GIST or GIN) or maybe GIN index is faster than GIST+intarray / GIN+intarray. Thanks in advance for reply. ML ---(end of broadcast)--- TIP 6: explain analyze is your friend
Re: [GENERAL] intarray index
On Mon, 28 Nov 2005, Marek Lewczuk wrote: Hello, I have a question about IntArray contrib package. The docs says: "...current implementation provides index support for one-dimensional array of int4's - gist__int_ops, suitable for small and medium size of arrays (used on default), and gist__intbig_ops for indexing large arrays (we use superimposed signature with length of 4096 bits to represent sets)..." How many elements within single array is suggested within small/medium/large array ? I have arrays with up to 200 elements - which index I should use ? gist__intbig_ops Thanks. ML ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org Regards, Oleg _ Oleg Bartunov, sci.researcher, hostmaster of AstroNet, Sternberg Astronomical Institute, Moscow University (Russia) Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/ phone: +007(095)939-16-83, +007(095)939-23-83 ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
[GENERAL] intarray index
Hello, I have a question about IntArray contrib package. The docs says: "...current implementation provides index support for one-dimensional array of int4's - gist__int_ops, suitable for small and medium size of arrays (used on default), and gist__intbig_ops for indexing large arrays (we use superimposed signature with length of 4096 bits to represent sets)..." How many elements within single array is suggested within small/medium/large array ? I have arrays with up to 200 elements - which index I should use ? Thanks. ML ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org
