Class  Description 

STAsGeoJSON  
STAsJson  
STAsText  
STBuffer 
Returns a geometry that represents all points whose distance from this Geometry
is less than or equal to radius

STContains 
Returns true if and only if no points of B lie in the exterior of A,
and at least one point of the interior of B lies in the interior of A.

STCrosses 
Returns TRUE if the supplied geometries have some, but not all, interior points in common

STDifference 
Given geometries A and B, this function returns a geometry that represents
the part of geometry A that does not intersect with geometry B

STDisjoint 
Returns TRUE if two Geometries do not "spatially intersect"  if they do not share any space

STDistance 
For geometry type Returns the 2D Cartesian distance between two geometries in projected units (based on spatial ref).

STDWithin  
STEnvelope 
Returns a geometry representing the double precision (float8) bounding box of the supplied geometry.

STEquals 
Returns true if the given geometries represent the same geometry.

STGeomFromText  
STGeomFromTextSrid  
STIntersects 
Returns TRUE if the Geometries/Geography "spatially intersect in 2D"  (share any portion of space) and FALSE if they don't (they are Disjoint)

STOverlaps 
Returns TRUE if the Geometries share space, are of the same dimension, but are not completely contained by each other

STPointFunc  
STRelate 
Returns true if this Geometry is spatially related to anotherGeometry, by testing for intersections between
the Interior, Boundary and Exterior of the two geometries as specified by the values in the intersectionMatrixPattern.

STTouches 
Returns TRUE if the geometries have at least one point in common, but their interiors do not intersect

STTransform 
Return a new geometry with its coordinates transformed to a different spatial reference

STUnion 
Returns a geometry that represents the point set union of the Geometries

STUnionAggregate 
Returns a geometry that represents the point set union of the Geometries

STWithin  
STXFunc 
Return the X coordinate of the point, or NaN if not available

STXMax 
Returns X maxima of a bounding box 2d or 3d or a geometry

STXMin 
Returns X minima of a bounding box 2d or 3d or a geometry

STYFunc 
Return the Y coordinate of the point, or NaN if not available

STYMax 
Returns Y maxima of a bounding box 2d or 3d or a geometry

STYMin 
Returns Y minima of a bounding box 2d or 3d or a geometry

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