SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function dictGet (children 1)
     ExpressionList (children 3)
      Literal \'complex_key_cache_dictionary_01862\'
      Literal \'value\'
      Function tuple (children 1)
       ExpressionList (children 2)
        Function toUInt64 (children 1)
         ExpressionList (children 1)
          Literal UInt64_2
        Literal \'FirstKey\'
 Identifier Null
