Check if Linear Line String

Question

Hi!
I get a linear line string and I want to check which streets are on that line string. For that I have a table with streets and intersections.
There are any sdo functions to realise that?
best regards.

Answer 1

Thats the structur of table FEATURE:
CREATE TABLE FEATURE (
       F_ID NUMBER(25,0) CONSTRAINT pk_feature PRIMARY KEY,
       F_GEOM SDO_GEOMETRY,
       F_DSS_ID CONSTRAINT fk_f_dss REFERENCES DATA_SUPPLIER_SOURCE(DSS_ID),
       F_FT_ID CONSTRAINT fk_f_ft REFERENCES FEATURE_TYPE(FT_ID),
       F_NAME VARCHAR2(80),
       F_INSERT TIMESTAMP,
       F_UPDATE TIMESTAMP    
);Data on table FEATURE only LINE STRINGS GEOM_TYPE = 2002
Structur of table GPS_TOURS:
CREATE TABLE GPS_TOURS (
       GT_ID NUMBER(25,0) CONSTRAINT pk_gps_tour PRIMARY KEY,
       GT_TOUR_ID NUMBER(25,0),
       GT_TOUR_DESCRIPTION VARCHAR2(50),
       GT_START TIMESTAMP,
       GT_END TIMESTAMP,
       GT_GEOM MDSYS.SDO_GEOMETRY
);Also contains just GEOM_TYPE 2002.
Now I wanted to check if a line of the table FEATURE contains or any interact with a table from GPS_TOURS.
Because if I tried to check if line A contains line B I saw that that cant be the solution because a line isnt a area and so I cant check if line A contains line B - true?
For now I do following with SDO_NN:
create or replace view v_segment_detection as
select
       gps_tours.gt_id,
       gps_tours.gt_tour_id,
       feature.f_id,
       feature.f_name,
       sdo_nn_distance(1) AS DISTANCE
    from gps_tours, feature
    where sdo_nn (feature.f_geom, gps_tours.gt_geom, 'sdo_num_res=1', 1) = 'TRUE'
;Anyone have a better solution? Do compare all points would be time-consuming for 7 000 000 data sets.
best regards
Message was edited by:
yoda