SDO_RELATE gives strange results. Bug?
If I use the mask = inside for a given query, I get lines 69 and = overlapbdyintersect mask I get 15 ranks.But if I use the mask = inside + overlapbdyintersect, I have only 50 lines.
And then if I use UNION ALL, for speed as indicated in the manual, I get 84 lines as a result if I combine the two.
Isn't this a little odd?
No explanation for this kind of behavior?
examples:
Inside (69) + OVERLAPBDYINTERSECT (15) = 50 (strange)
Count (S_ID) map SELECTION. BYGG_POLY
where
SDO_RELATE (GEOM, SDO_UTIL. FROM_WKTGEOMETRY
* (' Polygon ((441029.298070891 6445795.42259877, 441320.756519155 6445767.05053744, 441318.177240852 6445527.17765524, 441029.298070891 6445795.42259877)) "), *.
* "(masque = INTÉRIEUR + OVERLAPBDYINTERSECT') ="TRUE"*"
Inside (69) + OVERLAPBDYINTERSECT (15) = 84 (Correct)
SELECT card S_ID. BYGG_POLY
where
SDO_RELATE (GEOM, SDO_UTIL. FROM_WKTGEOMETRY
* (' Polygon ((441029.298070891 6445795.42259877, 441320.756519155 6445767.05053744, 441318.177240852 6445527.17765524, 441029.298070891 6445795.42259877)) "), *.
* "(masque = à l'INTÉRIEUR ') ="TRUE"*"
UNION ALL
SELECT card S_ID. BYGG_POLY
where
SDO_RELATE (GEOM, SDO_UTIL. FROM_WKTGEOMETRY
* (' Polygon ((441029.298070891 6445795.42259877, 441320.756519155 6445767.05053744, 441318.177240852 6445527.17765524, 441029.298070891 6445795.42259877)) "), *.
* "(masque = OVERLAPBDYINTERSECT') ="TRUE"*"
And here is a set of data that applies to the questions above, for sql loader (sqlldr)
[bygg_poly.sql | http://www.4shared.com/file/130099592/40e86c5/bygg_poly.html]
[bygg_poly.ctl | http://www.4shared.com/file/130099618/2e445b8a/bygg_poly.html]
Your data set (table BYGG_POLY) was 1054 invalid geometries.
Index of the Oracle and Oracle Spatial 11 g recommended:
http://www.Oracle.com/technology/products/spatial/PDF/spatial_wp09_bestprac.PDF
has talked about validation of the geometry.
For example, you can use the following sql code to fix your invalid geometries:
Update BYGG_POLY
geom value = sdo_util.rectify_geometry (geom, 0.001)
where sdo_geom.validate_geometry_with_context (geom,.001)! = "TRUE";
Note rectify_geometry checks the following problems that can make an invalid geometry
and the problems in the geometry returned bugs:
Duplicate vertices
Limit of polygon cutting himself
Incorrect orientation of exterior or interior rings (or both) of a polygon
After that, the query with "mask = inside ' returns of 69 lines,"
"mask = OVERLAPBDYINTERSECT' returns 42 lines."
"= INSIDE + OVERLAPBDYINTERSECT mask ' returns 111 lines."
And notice an outside ring polygon must be specified in the order in the opposite direction:
SDO_UTIL. FROM_WKTGEOMETRY (' Polygon ((441029.298070891 6445795.42259877, 441318.177240852 6445527.17765524, 441320.756519155 6445767.05053744, 441029.298070891 6445795.42259877)) ")
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Hi Paul,.
For geodetic geometry, R-tree index are in 3D. For example, you can see:
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SDO_GEOMETRY (3008, NULL, NULL, SDO_ELEM_INFO_ARRAY (1, 1007, 3), SDO_ORDINATE_ARR)
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