returns the kind of node this is . concode_field_sep String digest concode_field_sep RelDataType getType concode_elem_sep boolean isA concode_elem_sep boolean isA concode_elem_sep String toString concode_elem_sep boolean isAlwaysTrue concode_elem_sep boolean isAlwaysFalse concode_elem_sep R accept concode_elem_sep R accept
SqlKind function ( ) { return SqlKind . OTHER ; }