Name
@ — Returns TRUE if A's bounding box is contained by B's.
Synopsis
boolean @(
geometry
A
,
geometry
B
);
Description
The @ operator returns TRUE if the bounding box of geometry A is completely
contained by the bounding box of geometry B.
![[Note]](../images/note.png)
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This operand will make use of any indexes that may be available on the geometries. |
Examples
Code
SELECT tbl1.column1, tbl2.column1, tbl1.column2 @ tbl2.column2 AS contained
FROM
( VALUES
(1, 'LINESTRING (1 1, 3 3)'::geometry)) AS tbl1,
( VALUES
(2, 'LINESTRING (0 0, 4 4)'::geometry),
(3, 'LINESTRING (2 2, 4 4)'::geometry),
(4, 'LINESTRING (1 1, 3 3)'::geometry)) AS tbl2;
Output
column1 | column1 | contained
---------+---------+-----------
1 | 2 | t
1 | 3 | f
1 | 4 | t
(3 rows)
Figure