clickhouse-driver 0.0.20

Python driver with native interface for ClickHouse

ClickHouse Python Driver

ClickHouse Python Driver with native (TCP) interface support.

Asynchronous wrapper is available here: https://github.com/mymarilyn/aioch

Features

• External data for query processing.

• Query settings.

• Compression support.

• TLS support (since server version 1.1.54304).

• Types support:

  • Float32/64

  • [U]Int8/16/32/64

  • Date/DateTime(‘timezone’)

  • String/FixedString(N)

  • Enum8/16

  • Array(T)

  • Nullable(T)

  • UUID

  • Decimal

  • IPv4/IPv6

  • LowCardinality(T)

• Query progress information.

• Block by block results streaming.

• Reading query profile info.

• Receiving server logs.

Documentation

Documentation is available at https://clickhouse-driver.readthedocs.io.

Usage

>>> from clickhouse_driver import Client
>>>
>>> client = Client('localhost')
>>>
>>> client.execute('SHOW TABLES')
[('test',)]
>>>
>>> client.execute('DROP TABLE IF EXISTS test')
[]
>>>
>>> client.execute('CREATE TABLE test (x Int32) ENGINE = Memory')
[]
>>>
>>> client.execute(
...     'INSERT INTO test (x) VALUES',
...     [{'x': 100}]
... )
>>> client.execute('INSERT INTO test (x) VALUES', [[200]])
>>>
>>> client.execute(
...     'INSERT INTO test (x) '
...     'SELECT * FROM system.numbers LIMIT %(limit)s',
...     {'limit': 3}
... )
[]
>>>
>>> client.execute('SELECT sum(x) FROM test')
[(303,)]

License

ClickHouse Python Driver is distributed under the MIT license.