Spatial query for delete duplicates of geometry

Question

Hello,
I have a table so done:
link table
id  type  geometry
1  4110 SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(8.817363, 45.2586799, 8.8175389, 45.2586922))
2  4110 SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(9.673168, 45.9441037, 9.6737121, 45.9439068, 9.6743082, 45.9437246, 9.6744819, 45.9437006, 9.6745598, 45.9436942))
3  4120 SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(9.0274561, 45.5738369, 9.0274676, 45.5737538))
4  4110 SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(8.8630649, 45.804841, 8.8632493, 45.804992, 8.8633701, 45.805095, 8.8637156, 45.8053738))
5  4110 SDO_GEOMETRY(2001, 8307, SDO_POINT_TYPE(10.2349279, 45.5008616, NULL), NULL, NULL)
6  4120 SDO_GEOMETRY(2001, 8307, SDO_POINT_TYPE(10.2591062, 45.501003, NULL), NULL, NULL)
7  4120 SDO_GEOMETRY(2002, 8307, NULL, SDO_ELEM_INFO_ARRAY(1, 2, 1), SDO_ORDINATE_ARRAY(10.0924794, 45.1855654, 10.0927326, 45.1854935))
...I think that the geometry of the rows with feattyp=4120 are all included (or are equal) into geometry of rows with feattyp=4110. In this case I can delete all rows with feattyp=4120.
I'm thinking to use SDO_ANYINTERACT function but I don't know how do the query.
Can you help me?
Thank you in advance.

Answer 1

I have done so:
SET SERVEROUTPUT ON
DECLARE 
  CURSOR cur IS SELECT * FROM link WHERE FEATTYP=4110;
  rec cur%ROWTYPE;
num_tot_not_intersections NUMBER(20);
num_not_intersections NUMBER(20);
BEGIN
num_not_intersections := 0;
num_tot_not_intersections := 0;
  OPEN cur;
  LOOP
  FETCH cur INTO rec;  
    EXIT WHEN cur%NOTFOUND;
    SELECT count(ID) INTO num_not_intersections FROM link2 WHERE NOT EXISTS (SELECT count(st2.ID) from link2 st2 WHERE st2.FEATTYP=4120 AND SDO_ANYINTERACT(st2.geometry, rec.geometry)='TRUE'); 
    num_tot_not_intersections := num_tot_not_intersections + num_not_intersections;
  END LOOP; 
  DBMS_OUTPUT.PUT_LINE('Totally '||num_not_intersections||' rows with feattyp=4120 without intersection with feattyp=4110');
  CLOSE cur;
END;
/What do you think?
thanks