Extensions
Scalar Functions
```sql
UBIGINT ST_NPoints (col0 POINT_2D)
UBIGINT ST_NPoints (col0 LINESTRING_2D)
UBIGINT ST_NPoints (col0 POLYGON_2D)
UBIGINT ST_NPoints (col0 BOX_2D)
UINTEGER ST_NPoints (col0 GEOMETRY)
```