CreateQuery polygon_dictionary (children 3)
 Identifier polygon_dictionary
 ExpressionList (children 2)
  DictionaryAttributeDeclaration key (children 1)
   DataType Array (children 1)
    ExpressionList (children 1)
     DataType Array (children 1)
      ExpressionList (children 1)
       DataType Array (children 1)
        ExpressionList (children 1)
         DataType Tuple (children 1)
          ExpressionList (children 2)
           DataType Float64
           DataType Float64
  DictionaryAttributeDeclaration value (children 2)
   DataType Nullable (children 1)
    ExpressionList (children 1)
     DataType UInt64
   Literal NULL
 Dictionary definition (children 4)
  ExpressionList (children 1)
   Identifier key
  FunctionWithKeyValueArguments  clickhouse (children 1)
   ExpressionList (children 3)
    pair (children 1)
     Literal \'localhost\'
    pair (children 1)
     Function tcpPort (children 1)
      ExpressionList
    pair (children 1)
     Literal \'polygon_dictionary_nullable_source_table\'
  Dictionary lifetime
  Dictionary layout (children 1)
   ExpressionList
