SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Function arraySort (children 1)
       ExpressionList (children 2)
        Function lambda (children 1)
         ExpressionList (children 2)
          Function tuple (children 1)
           ExpressionList (children 1)
            Identifier x
          Function tuple (children 1)
           ExpressionList (children 2)
            Function tupleElement (children 1)
             ExpressionList (children 2)
              Identifier x
              Literal UInt64_1
            Function tupleElement (children 1)
             ExpressionList (children 2)
              Identifier x
              Literal UInt64_2
        Function groupArray (children 1)
         ExpressionList (children 1)
          Identifier t
      Function array (children 1)
       ExpressionList (children 1)
        Literal Tuple_(UInt64_1, \'1\')
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier null_in_tuple
   Function in (children 1)
    ExpressionList (children 2)
     Identifier t
     Literal Tuple_(Tuple_(UInt64_1, \'1\'), Tuple_(UInt64_1, NULL))
