Name

>> — Returns TRUE if A's bounding box is strictly to the right of B's.

Synopsis

boolean >>( geometry A , geometry B );

Descrizione

The >> operator returns TRUE if the bounding box of geometry A is strictly to the right of the bounding box of geometry B.

[Note]

This operand will make use of any indexes that may be available on the geometries.

Esempi

SELECT tbl1.column1, tbl2.column1, tbl1.column2 
>
> tbl2.column2 AS right
FROM
  ( VALUES
        (1, 'LINESTRING (2 3, 5 6)'::geometry)) AS tbl1,
  ( VALUES
        (2, 'LINESTRING (1 4, 1 7)'::geometry),
        (3, 'LINESTRING (6 1, 6 5)'::geometry),
        (4, 'LINESTRING (0 0, 4 3)'::geometry)) AS tbl2;

 column1 | column1 | right
---------+---------+-------
           1 |       2 | t
           1 |       3 | f
           1 |       4 | f
(3 rows)

Si veda anche

<<, |>>, <<|