Description

The && operator returns TRUE if the bounding box of raster A overlaps the bounding box of raster B.

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

Examples

SELECT A.rid As a_rid, B.rid As b_rid, A.rast && B.rast As overlap
 FROM dummy_rast AS A CROSS JOIN dummy_rast AS B LIMIT 3;

 a_rid | b_rid | overlap
-------+-------+---------
     2 |     2 | t
     2 |     3 | f
     2 |     1 | f