PostGIS
Description
The &< operator returns TRUE if the bounding box of geometry A
overlaps or is to the left of the bounding box of geometry B, or more
accurately, overlaps or is NOT to the right of the bounding box of
geometry B.
|
Examples
SELECT tbl1.column1, tbl2.column1, tbl1.column2 &< tbl2.column2 AS overleft
FROM
( VALUES
(1, 'LINESTRING(1 2, 4 6)'::geometry)) AS tbl1,
( VALUES
(2, 'LINESTRING(0 0, 3 3)'::geometry),
(3, 'LINESTRING(0 1, 0 5)'::geometry),
(4, 'LINESTRING(6 0, 6 1)'::geometry)) AS tbl2;
column1 | column1 | overleft
---------+---------+----------
1 | 2 | f
1 | 3 | f
1 | 4 | t
(3 rows)