Spatial functions according to input type
List of spatial functions according to the type of input that they can accept.
Important: As noted elsewhere, the spatial data types form a hierarchy, with ST_Geometry as the root. When the documentation for Db2® Spatial Extender indicates that a value of a super type in this hierarchy can be used as input to a function, alternatively, a value of any subtype of this super type can also be used as input to the function.
For example, the first entries in Table 1 indicate that ST_Area and
a number of other functions can take values of the ST_Geometry data
type as input. Therefore, input to these functions can also be values
of any subtype of ST_Geometry: ST_Point, ST_Curve, ST_LineString,
and so on.