Re: [HACKERS] No ~ operator for box, point
On Tue, Feb 20, 2007 at 04:22:27PM -0500, Bruce Momjian wrote: Added to TODO: * Add missing operators for geometric data types Some geometric types do not have the full suite of geometric operators, e.g. box @ point I've started looking at this, and ISTM that at least part of this could be solved by allowing some implicit casts. Given that the geometry data types are point, line, lseg, box, path, polygon, circle, I think the following should be safe: box - polygon lseg - open path polygon - closed path I would argue that this is similar to int2 - int4 - int8: a box is a type of polygon, a polygon is a closed path (that doesn't intersect, which needs to be added to the docs, btw), and a line segment is an open path. Is there any reason not to make these casts implicit? If there is, what's the best way to go about adding operators for cases where equivalent operators exist? (IE: @(box,point) doesn't exist, but @(polygon,point) does, and should suffice for @(box,point) with appropriate casting) Actually, looking at one example (@(point,box) vs @(point,poly)), part of the reason is that it's far simpler to deal with a box than a generic polygon. -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [HACKERS] No ~ operator for box, point
Jim C. Nasby [EMAIL PROTECTED] writes: Is there any reason not to make these casts implicit? To the extent that you're trying to provide operators that should be indexable, that won't solve the problem. I'm unconvinced that these casts should be implicit anyway, as the types are really considerably different than, say, int2 and int4 --- there are no operations on int4 that don't make sense for an int2, the way there are for polygon vs. box. regards, tom lane ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
Re: [HACKERS] No ~ operator for box, point
Added to TODO: * Add missing operators for geometric data types Some geometric types do not have the full suite of geometric operators, e.g. box @ point --- Jim Nasby wrote: * Add missing operators for geometric data types and operators There are geometric data types that do not have the full suite of geometric operators defined; for example, box @ point does not exist. On Jan 26, 2007, at 9:32 PM, Bruce Momjian wrote: Can I get a TODO on this? -- - Jim Nasby wrote: On Jan 25, 2007, at 6:26 PM, Tom Lane wrote: Martijn van Oosterhout kleptog@svana.org writes: On Thu, Jan 25, 2007 at 01:59:33PM -0500, Merlin Moncure wrote: On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point I don't see a reason, although you can do it with polygon and not box. Seems like an old oversight. Ok. If I ever get some time I'll submit a patch to bring everything in-line (there's other missing operators as well). Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? ~ is deprecated, contains is preferentially spelled @ now. Ok, I'll keep that in mind. -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate -- Bruce Momjian [EMAIL PROTECTED] EnterpriseDBhttp://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) -- Bruce Momjian [EMAIL PROTECTED] http://momjian.us EnterpriseDB http://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [HACKERS] No ~ operator for box, point
* Add missing operators for geometric data types and operators There are geometric data types that do not have the full suite of geometric operators defined; for example, box @ point does not exist. On Jan 26, 2007, at 9:32 PM, Bruce Momjian wrote: Can I get a TODO on this? -- - Jim Nasby wrote: On Jan 25, 2007, at 6:26 PM, Tom Lane wrote: Martijn van Oosterhout kleptog@svana.org writes: On Thu, Jan 25, 2007 at 01:59:33PM -0500, Merlin Moncure wrote: On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point I don't see a reason, although you can do it with polygon and not box. Seems like an old oversight. Ok. If I ever get some time I'll submit a patch to bring everything in-line (there's other missing operators as well). Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? ~ is deprecated, contains is preferentially spelled @ now. Ok, I'll keep that in mind. -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate -- Bruce Momjian [EMAIL PROTECTED] EnterpriseDBhttp://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 5: don't forget to increase your free space map settings
Re: [HACKERS] No ~ operator for box, point
On Jan 25, 2007, at 6:26 PM, Tom Lane wrote: Martijn van Oosterhout kleptog@svana.org writes: On Thu, Jan 25, 2007 at 01:59:33PM -0500, Merlin Moncure wrote: On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point I don't see a reason, although you can do it with polygon and not box. Seems like an old oversight. Ok. If I ever get some time I'll submit a patch to bring everything in-line (there's other missing operators as well). Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? ~ is deprecated, contains is preferentially spelled @ now. Ok, I'll keep that in mind. -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
Re: [HACKERS] No ~ operator for box, point
Can I get a TODO on this? --- Jim Nasby wrote: On Jan 25, 2007, at 6:26 PM, Tom Lane wrote: Martijn van Oosterhout kleptog@svana.org writes: On Thu, Jan 25, 2007 at 01:59:33PM -0500, Merlin Moncure wrote: On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point I don't see a reason, although you can do it with polygon and not box. Seems like an old oversight. Ok. If I ever get some time I'll submit a patch to bring everything in-line (there's other missing operators as well). Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? ~ is deprecated, contains is preferentially spelled @ now. Ok, I'll keep that in mind. -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate -- Bruce Momjian [EMAIL PROTECTED] EnterpriseDBhttp://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + ---(end of broadcast)--- TIP 2: Don't 'kill -9' the postmaster
[HACKERS] No ~ operator for box, point
decibel=# select version(); PostgreSQL 8.3devel on i386-apple-darwin8.8.2, compiled by GCC i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5363) decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point LINE 1: select box '((0,0),(2,2))' ~ point '(1,1)'; Any reason this doesn't exist? -- Jim Nasby[EMAIL PROTECTED] EnterpriseDB http://enterprisedb.com 512.569.9461 (cell) ---(end of broadcast)--- TIP 4: Have you searched our list archives? http://archives.postgresql.org
Re: [HACKERS] No ~ operator for box, point
On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select version(); PostgreSQL 8.3devel on i386-apple-darwin8.8.2, compiled by GCC i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5363) decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point LINE 1: select box '((0,0),(2,2))' ~ point '(1,1)'; I don't see a reason, although you can do it with polygon and not box. Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? merlin ---(end of broadcast)--- TIP 7: You can help support the PostgreSQL project by donating at http://www.postgresql.org/about/donate
Re: [HACKERS] No ~ operator for box, point
On Thu, Jan 25, 2007 at 01:59:33PM -0500, Merlin Moncure wrote: On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select version(); PostgreSQL 8.3devel on i386-apple-darwin8.8.2, compiled by GCC i686-apple-darwin8-gcc-4.0.1 (GCC) 4.0.1 (Apple Computer, Inc. build 5363) decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point LINE 1: select box '((0,0),(2,2))' ~ point '(1,1)'; I don't see a reason, although you can do it with polygon and not box. Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? I ran into this the other day too. But box ~ box does exist, which worked for my purposes, but it did surprise me. Have a nice day, -- Martijn van Oosterhout kleptog@svana.org http://svana.org/kleptog/ From each according to his ability. To each according to his ability to litigate. signature.asc Description: Digital signature
Re: [HACKERS] No ~ operator for box, point
Martijn van Oosterhout kleptog@svana.org writes: On Thu, Jan 25, 2007 at 01:59:33PM -0500, Merlin Moncure wrote: On 1/25/07, Jim C. Nasby [EMAIL PROTECTED] wrote: decibel=# select box '((0,0),(2,2))' ~ point '(1,1)'; ERROR: operator does not exist: box ~ point I don't see a reason, although you can do it with polygon and not box. Seems like an old oversight. Also, I can't find the ~ operator defined for polygon in the documentation, am I missing something? ~ is deprecated, contains is preferentially spelled @ now. regards, tom lane ---(end of broadcast)--- TIP 3: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faq
