SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 2)
    Identifier k
    Identifier s
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_sparse_pk
   Function or (children 1)
    ExpressionList (children 2)
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier k
       Literal UInt64_0
     Function equals (children 1)
      ExpressionList (children 2)
       Identifier k
       Literal UInt64_3
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier k
    OrderByElement (children 1)
     Identifier s