Name
&< — Returns TRUE if A's bounding box is to the left of B's.
Synopsis
boolean &<(
raster
A
,
raster
B
);
Description
The &< operator returns TRUE if the bounding box of raster A
overlaps or is to the left of the bounding box of raster B, or more accurately, overlaps or is NOT to the right
of the bounding box of raster B.
![[Note]](../images/note.png)
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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 overleft
FROM dummy_rast AS A CROSS JOIN dummy_rast AS B;
a_rid | b_rid | overleft
------+-------+----------
2 | 2 | t
2 | 3 | f
2 | 1 | f
3 | 2 | t
3 | 3 | t
3 | 1 | f
1 | 2 | t
1 | 3 | t
1 | 1 | t