ST_MultiCurveAggr( ST_Curve ) method

Syntax

ST_MultiCurve::ST_MultiCurveAggr( ST_Curve geometry_column)

Parameters

• geometry_column – The geometry values to generate the collection. Typically this is a column.

Returns

ST_MultiCurve Returns a multicurve that contains all of the geometries in a group.

Examples

• Example 1 – The following example returns a single value which combines all geometries of type ST_Curve from the SpatialShapes table into a single collection of type ST_MultiCurve. If the Shape column was of type ST_Curve then the TREAT function and WHERE clause would not be necessary.

  SELECT ST_MultiCurve::ST_MultiCurveAggr( TREAT( Shape AS ST_Curve ) )
  FROM SpatialShapes WHERE Shape IS OF( ST_Curve )

Standards

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