2018 Changelog

- When doing a rolling update on a cluster, at the point when some of the replicas are running the old version of ClickHouse and some are running the new version, replication is temporarily stopped and the message `unknown parameter 'shard'` appears in the log. Replication will continue after all replicas of the cluster are updated.
- If different versions of ClickHouse are running on the cluster servers, it is possible that distributed queries using the following functions will have incorrect results: `varSamp`, `varPop`, `stddevSamp`, `stddevPop`, `covarSamp`, `covarPop`, `corr`. You should update all cluster nodes.

## [Changelog for 2017](/docs/whats-new/changelog/2017)[​](#changelog-for-2017 "Direct link to changelog-for-2017")

- [ClickHouse Release 18.16](#clickhouse-release-18-16)
  - [ClickHouse Release 18.16.1, 2018-12-21](#clickhouse-release-18-16-1-2018-12-21)- [ClickHouse Release 18.16.0, 2018-12-14](#clickhouse-release-18-16-0-2018-12-14)- [ClickHouse Release 18.14](#clickhouse-release-18-14)
    - [ClickHouse Release 18.14.19, 2018-12-19](#clickhouse-release-18-14-19-2018-12-19)- [ClickHouse Release 18.14.18, 2018-12-04](#clickhouse-release-18-14-18-2018-12-04)- [ClickHouse Release 18.14.17, 2018-11-30](#clickhouse-release-18-14-17-2018-11-30)- [ClickHouse Release 18.14.15, 2018-11-21](#clickhouse-release-18-14-15-2018-11-21)- [ClickHouse Release 18.14.14, 2018-11-20](#clickhouse-release-18-14-14-2018-11-20)- [ClickHouse Release 18.14.13, 2018-11-08](#clickhouse-release-18-14-13-2018-11-08)- [ClickHouse Release 18.14.12, 2018-11-02](#clickhouse-release-18-14-12-2018-11-02)- [ClickHouse Release 18.14.11, 2018-10-29](#clickhouse-release-18-14-11-2018-10-29)- [ClickHouse Release 18.14.10, 2018-10-23](#clickhouse-release-18-14-10-2018-10-23)- [ClickHouse Release 18.14.9, 2018-10-16](#clickhouse-release-18-14-9-2018-10-16)- [ClickHouse Release 18.12](#clickhouse-release-18-12)
      - [ClickHouse Release 18.12.17, 2018-09-16](#clickhouse-release-18-12-17-2018-09-16)- [ClickHouse Release 18.12.14, 2018-09-13](#clickhouse-release-18-12-14-2018-09-13)- [ClickHouse Release 18.12.13, 2018-09-10](#clickhouse-release-18-12-13-2018-09-10)- [ClickHouse Release 18.10](#clickhouse-release-18-10)
        - [ClickHouse Release 18.10.3, 2018-08-13](#clickhouse-release-18-10-3-2018-08-13)- [ClickHouse Release 18.6](#clickhouse-release-18-6)
          - [ClickHouse Release 18.6.0, 2018-08-02](#clickhouse-release-18-6-0-2018-08-02)- [ClickHouse Release 18.5](#clickhouse-release-18-5)
            - [ClickHouse Release 18.5.1, 2018-07-31](#clickhouse-release-18-5-1-2018-07-31)- [ClickHouse Release 18.4](#clickhouse-release-18-4)
              - [ClickHouse Release 18.4.0, 2018-07-28](#clickhouse-release-18-4-0-2018-07-28)- [ClickHouse Release 18.1](#clickhouse-release-18-1)
                - [ClickHouse Release 18.1.0, 2018-07-23](#clickhouse-release-18-1-0-2018-07-23)- [ClickHouse Release 1.1](#clickhouse-release-1-1)
                  - [ClickHouse Release 1.1.54394, 2018-07-12](#clickhouse-release-1-1-54394-2018-07-12)- [ClickHouse Release 1.1.54390, 2018-07-06](#clickhouse-release-1-1-54390-2018-07-06)- [ClickHouse Release 1.1.54388, 2018-06-28](#clickhouse-release-1-1-54388-2018-06-28)- [ClickHouse Release 1.1.54385, 2018-06-01](#clickhouse-release-1-1-54385-2018-06-01)- [ClickHouse Release 1.1.54383, 2018-05-22](#clickhouse-release-1-1-54383-2018-05-22)- [ClickHouse Release 1.1.54381, 2018-05-14](#clickhouse-release-1-1-54381-2018-05-14)- [ClickHouse Release 1.1.54380, 2018-04-21](#clickhouse-release-1-1-54380-2018-04-21)- [ClickHouse Release 1.1.54378, 2018-04-16](#clickhouse-release-1-1-54378-2018-04-16)- [ClickHouse Release 1.1.54370, 2018-03-16](#clickhouse-release-1-1-54370-2018-03-16)- [ClickHouse Release 1.1.54362, 2018-03-11](#clickhouse-release-1-1-54362-2018-03-11)- [ClickHouse Release 1.1.54343, 2018-02-05](#clickhouse-release-1-1-54343-2018-02-05)- [ClickHouse Release 1.1.54342, 2018-01-22](#clickhouse-release-1-1-54342-2018-01-22)- [ClickHouse Release 1.1.54337, 2018-01-18](#clickhouse-release-1-1-54337-2018-01-18)- [Changelog for 2017](#changelog-for-2017)

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