@ — Returns `TRUE`

if A's bounding box is contained by B's.

`boolean `

geometry
**@**(`A`
,
geometry
`B`
`)`

;

The `@`

operator returns `TRUE`

if the bounding box of geometry A is completely
contained by the bounding box of geometry B.

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

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