ST_Equals()

Returns 1 when two geometries are spatially equal, independent of coordinate ordering.

Syntax

ST_Equals(geom1, geom2)

Aliases: none.

Arguments

geom1 and geom2 are GEOMETRY values.

Return Value

Returns BOOL.

Usage Notes

• Spatial equality compares represented geometry rather than WKT text order.

• Both geometries must have the same SRID. Predicates are Cartesian (SRID 0), not geodetic SRID 4326 predicates.

Examples

DROP DATABASE IF EXISTS geo_equals_demo;
CREATE DATABASE geo_equals_demo;
USE geo_equals_demo;

SELECT ST_Equals(ST_GeomFromText('POLYGON((0 0, 2 0, 2 2, 0 2, 0 0))'), ST_GeomFromText('POLYGON((2 0, 2 2, 0 2, 0 0, 2 0)')) AS polygons_equal;

DROP DATABASE geo_equals_demo;

See Also

ST_Overlaps(), ST_Intersects().