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Changelog

0.1.5 - 2020-09-19

Added

  • Do not require settings declaration if server support setting-as-string. Pull request #142 by azat.
  • host_name in logs. Pull request #144 by azat.
  • Cursor attribute columns_with_types to DB API. Issue #149.
  • Cursor method set_query_id to DB API. Issue #152.

Fixed

  • Connection error messages formatting.
  • Client.from_url credentials unquoting. Issue #146.
  • Empty nested array handling. Pull request #161 by dourvaris.
  • read_varint overflow. Issue #163.
  • Malformed reads/writes in BufferedReader.

Changed

  • Use deque for ~4x speedup when reading Array columns. Pull request #164 by dourvaris.

0.1.4 - 2020-06-13

Added

  • Tuple type.
  • Custom String column encoding.
  • Settings update to v20.4.1.2742 server version. Pull request #133 by azat.
  • Settings update to v20.5.1.3657 server version. Pull request #141 by azat.
  • Unsupported server versions to documentation.
  • Performance section to documentation.
  • Python 3.9 in Travis CI build matrix.

Fixed

  • Reading/writing Array(Tuple).
  • 20.x server version support.
  • Settings mutation in execute.
  • Slow columnar results returning (columnar=True).
  • Segfault on passing not encoded strings during INSERT into ByteString column.

Changed

  • Miscellaneous read/write optimizations
  • Protocol version bumped to 54429.

0.1.3 - 2020-02-21

Added

  • Python DB API 2.0.
  • Multiple hosts support on connection errors.
  • Insert columnar data support. Pull request #122 by Anexen.
  • Wheels for Python 3.8.
  • DateTime64 type.
  • Settings update to v20.2.1.2201 server version. Pull request #123 by azat.

Fixed

  • Client.from_url settings detection.
  • Close socket on KeyboardInterrupt while running query.
  • Null handling in LowCardinality columns.

Changed

  • Protocol version bumped to 54421.
  • Increased speed (up to 20-30% compared to 0.1.2 release) on heavy SELECT and INSERT queries. Pull request #122 by Anexen.
  • Memory consumption decreased (up to 20% compared to 0.1.2 release). Pull request #122 by Anexen.

0.1.2 - 2019-10-18

Added

  • Settings update to 19.16.1 server version. Pull request #111 by azat.
  • Python 3.8 in Travis CI build matrix.
  • Returning inserted rows count on INSERT queries with data. Returning rows count from INSERT FROM SELECT is not supported.

Fixed

  • Exposing columnar parameter to execute_with_progress. Pull request #108 by igorbb.
  • LowCardinality tests. Pull request #112 by azat.

Changed

  • Increased speed (up to 5 times compared to 0.1.1 release) of INSERT queries.
  • Date/DateTime columns selecting and inserting optimizations.

0.1.1 - 2019-09-20

Added

  • Client.from_url method that creates client configured from the given URL.

Fixed

  • If source column was timezone-aware values from DateTime column are returned with timezone now.
  • Handling zero bytes in the middle of FixedString column. Issue #104.

0.1.0 - 2019-08-07

Added

  • SimpleAggregateFunction type. Pull request #95 by azat.

Changed

  • Increased speed (5-6 times compared to 0.0.20 release) of SELECT queries with large amount of strings.
  • Package is distributed in source and binary forms now. Compilation from source is required for platforms without wheels.

Fixed

  • Elapsed time calculation on INSERT.
  • Dependencies environment markers for poetry in setup.py. Pull request #96 by nitoqq.

0.0.20 - 2019-06-02

Added

  • LowCardinality(T) type.
  • Access for processed rows, bytes and elapsed time of the last executed query.
  • Allow to insert datetime into Date column. Pull request #75 by gle4er.
  • 'max_partitions_per_insert_block' setting. Pull request #85 by mhsekhavat.

Fixed

  • Fallback for user name if it's not defined. Pull request #87 by wawaka.

0.0.19 - 2019-03-31

Added

Fixed

  • String enums escaping.

0.0.18 - 2019-02-19

Fixed

  • Strings mishandling read from buffer. Pull request #72 by mitsuhiko.

0.0.17 - 2019-01-09

Added

Changed

  • Protocol version bumped to 54406.

Fixed

  • INSERT generators support as data parameter.
  • INSERT null value on ByteString column. Pull request #65 by vivienm.
  • Integer types support in FloatColumn.
  • Handle quotes and equation signs in Enum options. Pull request #67 by sochi.

0.0.16 - 2018-10-09

Added

  • Option to access profile info about the last executed query. Pull request #57 by vanzi.
  • Decimal type.
  • Settings update to 18.14.2 server version.

Changed

  • String column read/write optimizations.
  • Protocol version bumped to 54401.

Fixed

  • Client settings are not mutable now.

0.0.15 - 2018-09-26

Fixed

  • Unpin clickhouse-cityhash dependency.

0.0.14 - 2018-08-16

Added

  • Block by block results streaming.

0.0.13 - 2018-07-26

Fixed

  • Revert pull request #45 by shotInLeg due to INSERT FROM SELECT breaking.

0.0.12 - 2018-07-25

Added

  • Allow for access of final progress stats. Pull request #41 by alex-hofsteede.
  • Supplying raw integers in DateTime columns. Pull request #42 by wawaka.

Fixed

  • Pip install in editable mode.

Changed

  • Raise ValueError instead of timeout for INSERT queries without params. Pull request #45 by shotInLeg.

0.0.11 - 2018-06-03

Added

  • Timezone support in DateTime type.
  • Python 3.7 and PyPy in Travis CI build matrix.
  • Direct bytes support in FixedString. Pull request #26 by lidalei.

Removed

  • Python 3.3 support.

0.0.10 - 2018-03-14

Added

  • Server version specific tests.
  • Nothing type.
  • Travis CI build matrix.

Fixed

  • Possible IndexError in packet types string representation. Pull request #28 by WouldYouKindly.
  • Do not use timezone in Date columns. Issue #29.
  • Approximate rows to read calculation in execute_with_progress. Pull request #30 by b1naryth1ef.

Changed

  • List and Tuple types rendering in parameters substitution. Pull request #27 by silentsokolov.

0.0.9 - 2018-01-17

Added

Fixed

  • Raise EOFError when no data is read in _read_one in Python 3.
  • SSL file descriptors closing in Python 2.7.

Changed

  • Log level for normal operations raised to DEBUG. Pull request #17 by kmatt.

Removed

  • Drop Python 3.2 support due to lz4 issues.

0.0.8 - 2017-10-23

Added

  • Parameters substitution for SELECT queries.
  • SSL support.

Fixed

  • Columnar result returning from multiple blocks. Columns must be concatenated.
  • Settings logger was root.
  • Reading/writing Array(String) NotImplementedError raise.
  • IPv6 support issue #12.

0.0.7 - 2017-10-12

Added

  • Configurable logging level in tests.
  • Full error codes list.
  • Force check clickhouse-cityhash is installed if compression is used.
  • Client can be directly imported from package.
  • insert_block_size parameter - maximum rows in block (default is 1048576).
  • Columnar result returning (columnar=True). Pull request #11 by kszucs.
  • Tunable types check (types_check=True). Off by default.

Changed

  • Handling only socket-related errors on ping. Errors are logged with WARNING level.
  • Client is created per one test.
  • Sending/receiving data speed significantly increased.

Fixed

  • Version detection in setup.py.
  • Error handling on socket.shutdown.
  • Install enum34 only if required.
  • clickhouse-cityhash import issue #10.

Removed

  • QuickLZ support
  • six dependency

0.0.6 - 2017-09-19

Added

  • UUID type.
  • Query limits settings.
  • Code coverage.
  • ClickHouse server and driver version upped to 54276.
  • Changelog.
  • Added column name to TypeMismatchError.
  • Query progress information.
  • Version of package.

Fixed

  • socket.timeout error handling on connect.

0.0.5 - 2017-07-16

Added

  • Nullable(T) type.
  • Return data from TOTALS and EXTREMES packets.
  • Query settings.
  • query_id execution option.
  • NULL type.
  • Raise exception on SELECT queries.

Changed

  • Small columns refactoring.
  • clickhouse-client in tests moved to docker.

0.0.4 - 2017-06-15

Added

  • FixedString(N) type.
  • Enum8/16 types.
  • Array(T) type.
  • External data for query processing
  • Raise UnknownTypeError for unsupported columns.

Changed

  • Socket connect timeout fix.

0.0.3 - 2017-05-24

Added

  • QuickLZ, LZ4/LZ4HC, ZSTD compressions.
  • Support old servers without BlockInfo.
  • Travis CI.
  • flake8 syntax check.

0.0.2 - 2017-05-16

Added

  • [U]Int8/16/32/64 types.
  • Date/DateTime types.
  • String types.