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PolarDB:ST_Covers

Last Updated:Aug 22, 2024

This topic describes the ST_Covers function. This function checks whether a raster object fully covers another raster object or a geometry object in the same spatial reference system.

Syntax

boolST_Covers(raster rast1, raster rast2);
boolST_Covers(raster rast, geometry geom);
boolST_Covers(geometry geom,raster rast);

Parameters

Parameter

Description

rast1

Raster object 1.

rast2

Raster object 2.

rast

The raster object.

geom

The geometric object.

Examples

SELECT a.id FROM tbl_a a, tbl_b b WHERE ST_Covers(a.rast, b.rast);
 id
----
  1
(1 row)