Oracle Spatial Query

Question

I have created two tables the first called pai_equal created from the query below
create table pai_equal as
(select /*+ ORDERED */ l.*, t.toid
from sub_lt l, sub_topoarea t
where mdsys.sdo_relate(t.geoloc, l.geoloc,
'mask=EQUAL querytype=WINDOW')='TRUE');
This returns 4 rows which is correct
This query selects the terrier polygons that are made up of one topo_area polygon only (and no more and align exactly)
The second table is called inside_coveredby created as follows
create table inside_coveredby as
select /*+ ORDERED */ l.*, t.toid
from sub_lt l, sub_topoarea t
where mdsys.sdo_relate(t.geoloc, l.geoloc,
'mask=INSIDE+COVEREDBY querytype=WINDOW')='TRUE'
order by l.mi_prinx;
Returns 1142 undistinct rows, 475(distinct)
This query selects terrier polygons that are
(a) made up or two or more topo area polygons and where the boundaries align exactly
(b) made up of one or more topo area polygons and where the boundaries do not align exactly
What I want to do next is select all the terriers that are not included in either of the above 2 queries. Totals should now add up to 754 (4 +475+ ?)as the original terrier table contains 754 features
I think I need to select from sub_lt where mi_prinx is not in inside+coveredby or the equal table?
Has anyone any ideas on how to write this?
Your help as usual is much appreciated

Answer 1

You can use SQL difference operator to do this:
select toid from sub_lt
MINUS
select /*+ ORDERED */ l.*, t.toid
from sub_lt l, sub_topoarea t
where mdsys.sdo_relate(t.geoloc, l.geoloc,
'mask=INSIDE+COVEREDBY querytype=WINDOW')='TRUE'
order by l.mi_prinx;
This should give you everything other than inside+coveredby.
If you want to include the equal also,
change the mask to inside+coveredby+equal.