Required element Optional element SrcLayer or(eclusive) SrcSQL are required elements Use GeometryField.GeometryType for multi-geometry field support. Use GeometryField.SRS for multi-geometry field support. May be repeated May be repeated Use GeometryField.SrcRegion for multi-geometry field support. Default to FALSE. Use GeometryField.ExtentXMin, etc... for multi-geometry field support. User-facing name of the FID column. Default to FALSE. Default to FALSE. Defaults to the value of "name" if not specified. Defaults to Direct. Name of the geometry field Only used if encoding = "PointFromColumns" Only used if encoding = "PointFromColumns" Only used if encoding = "PointFromColumns" Only used if encoding = "PointFromColumns" Only used if encoding = "PointFromColumns". Defaults to TRUE. Only used if no Field element is found at the OGRVRTLayer level Used if encoding = "WKT", "WKB" or "Shape" to find the attribute field of the source layer. Used also in multiple geometry fields scenario to retrieve the source geometry field matching the target VRT geometry field. Defaults to FALSE. A valid WKT for a POLYGON May be repeated May be repeated May be repeated Use GeometryField.GeometryType for multi-geometry field support. Use GeometryField.SRS for multi-geometry field support. Defaults to Union if no Field or GeometryField element is speicified. May be repeated May be repeated Defaults to FALSE. Name of fields in which to place the name of the source layer of each feature. Use GeometryField.ExtentXMin, etc. for multi-geometry field support.