SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function toUInt64 (alias key) (children 1)
     ExpressionList (children 1)
      Literal UInt64_2
    Function dictGet (children 1)
     ExpressionList (children 3)
      Literal \'simple_key_cache_dictionary_01862\'
      Literal \'value\'
      Identifier key
 Identifier Null
