ST_IsEmpty — Tests if a Geometry corresponds to the empty set.
boolean ST_IsEmpty(
bytea
Geometry)
;
Tests if a Geometry corresponds to the empty set. Returns False if the incoming geometry it is not an empty geometry
According to Spatial Standards this mehod should return 1 for an empty geometry. Though, JASPA returns NULL because converts to null every empty geometry. See XXXXXXXXX for further information.
2D | 3D | M |
---|---|---|
OGC SFS for SQL. 1.1 (1999) | OGC SFS for SQL. 1.1.0 (2005) | OGC SFS for SQL. 1.2.0 (2006) | SQL-MM Part 3 |
---|---|---|---|
2.1.1.1 | 7.2.10.1 | 7.2.8.2 | 5.1.7 |