ST_ToCircular() method

Syntax

geometry-expression.ST_ToCircular()

Returns

ST_CircularString If the geometry-expression is of type ST_CircularString, return the geometry-expression. If the geometry-expression is of type ST_CompoundCurve with a single element which is of type ST_CircularString, return that element. If the geometry-expression is a geometry collection with a single element of type ST_CircularString, return that element. If the geometry-expression is the empty set, return an empty set of type ST_CircularString. Otherwise, raise an exception condition.

Examples

• Example 1 – The following example returns the result CircularString (0 0, 1 1, 2 0).

  SELECT NEW ST_CompoundCurve( 'CompoundCurve(CircularString( 0 0, 1 1, 2 0 ))' ).ST_ToCircular()

Standards

SQL/MM (ISO/IEC 13249-3: 2006) 5.1.33