SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 1)
    Function range (children 1)
     ExpressionList (children 1)
      Identifier k
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_sparse_pk
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier k
   Literal UInt64_3