Getting Started with Oracle Spatial

Question

I am not sure if this is the appropriate forum for this question but here goes:
I have just started using Spatial, and am
trying to setup a simple within-distance query, following closely the html documentation.
I create a parks table:
CREATE TABLE parks (GID VARCHAR2(32), shape MDSYS.SDO_GEOMETRY);
and then the geometry metadata table:
INSERT INTO sdo_geom_METADATA VALUES ('parks', 'shape', MDSYS.SDO_DIM_ARRAY(MDSYS.SDO_DIM_ELEMENT('X', 0, 100, 0.005), MDSYS.SDO_DIM_ELEMENT('Y', 0, 100, 0.005)));
I insert some entries into my PARKS table:
INSERT INTO parks VALUES ('park1', MDSYS.SDO_GEOMETRY(1,NULL,MDSYS.SDO_POINT_TYPE(1,1,NULL),NULL, NULL));
INSERT INTO parks VALUES ('park2', MDSYS.SDO_GEOMETRY(1,NULL,MDSYS.SDO_POINT_TYPE(1,3,NULL),NULL, NULL))
and create a spatial index:
create index parks_fixed on parks(shape) indextype is mdsys.spatial_index parameters('SDO_LEVEL=8');
Finally, I do my within-distance query:
select parks.GID from TARGET parks where mdsys.sdo_within_distance(parks.shape,
MDSYS.SDO_GEOMETRY(1,NULL,MDSYS.SDO_POINT_TYPE(1,1,NULL),NULL, NULL),
'distance=2')='true';
to find points within 2 units of (1,1).
Unfortunately, I get the error:
ERROR at line 1:
ORA-29902: error in executing ODCIIndexStart() routine
ORA-13207: incorrect use of the [SDO_WITHIN_DISTANCE] operator
ORA-06512: at "MDSYS.SDO_INDEX_METHOD", line 73
ORA-06512: at line 1
So a few questions:
1: What am I doing wrong?
2: In 4.2.3 of the Oracle HTML documentation,
the example query has SELECT A.Feature_ID
FROM TARGET A . . . . . .
What is TARGET?
3: The documentation has many errors. Where can I find better documentation?
Any help on any of these matters would be greatly appreciated!
Sincerely Yours,
Hirohisa

Answer 1

I am not sure if this is the appropriate forum for this question but here goes:
I have just started using Spatial, and am
trying to setup a simple within-distance query, following closely the html documentation.
I create a parks table:
CREATE TABLE parks (GID VARCHAR2(32), shape MDSYS.SDO_GEOMETRY);
and then the geometry metadata table:
INSERT INTO sdo_geom_METADATA VALUES ('parks', 'shape', MDSYS.SDO_DIM_ARRAY(MDSYS.SDO_DIM_ELEMENT('X', 0, 100, 0.005), MDSYS.SDO_DIM_ELEMENT('Y', 0, 100, 0.005)));
I insert some entries into my PARKS table:
INSERT INTO parks VALUES ('park1', MDSYS.SDO_GEOMETRY(1,NULL,MDSYS.SDO_POINT_TYPE(1,1,NULL),NULL, NULL));
INSERT INTO parks VALUES ('park2', MDSYS.SDO_GEOMETRY(1,NULL,MDSYS.SDO_POINT_TYPE(1,3,NULL),NULL, NULL))
and create a spatial index:
create index parks_fixed on parks(shape) indextype is mdsys.spatial_index parameters('SDO_LEVEL=8');
Finally, I do my within-distance query:
select parks.GID from TARGET parks where mdsys.sdo_within_distance(parks.shape,
MDSYS.SDO_GEOMETRY(1,NULL,MDSYS.SDO_POINT_TYPE(1,1,NULL),NULL, NULL),
'distance=2')='true';
to find points within 2 units of (1,1).
Unfortunately, I get the error:
ERROR at line 1:
ORA-29902: error in executing ODCIIndexStart() routine
ORA-13207: incorrect use of the [SDO_WITHIN_DISTANCE] operator
ORA-06512: at "MDSYS.SDO_INDEX_METHOD", line 73
ORA-06512: at line 1
So a few questions:
1: What am I doing wrong?
2: In 4.2.3 of the Oracle HTML documentation,
the example query has SELECT A.Feature_ID
FROM TARGET A . . . . . .
What is TARGET?
3: The documentation has many errors. Where can I find better documentation?
Any help on any of these matters would be greatly appreciated!
Sincerely Yours,
Hirohisa