SelectWithUnionQuery (children 1) ExpressionList (children 1) SelectQuery (children 3) ExpressionList (children 1) Asterisk TablesInSelectQuery (children 1) TablesInSelectQueryElement (children 1) TableExpression (children 1) TableIdentifier defaults_all_columns ExpressionList (children 2) OrderByElement (children 1) Identifier n OrderByElement (children 1) Identifier s