=============
Release 0.165
=============

General Changes
---------------

* Make ``AT`` a non-reserved keyword.
* Improve performance of :func:`transform`.
* Improve exchange performance by deserializing in parallel.
* Add support for compressed exchanges. This can be enabled with the ``exchange.compression-enabled``
  config option.
* Add input and hash collision statistics to :doc:`/sql/explain-analyze` output.

Hive Changes
------------

* Add support for MAP and ARRAY types in optimized Parquet reader.

MySQL and PostgreSQL Changes
----------------------------

* Fix connection leak on workers.