Disable rotation of the logs in tests (on CI)

Make global_context consistent.

Add unique identifiers IMergeTreeDataPart structure

* Docs en,ru

* Explanation added
Co-authored-by: NOlga Revyakina <revolg@yandex-team.ru>

Cleanup settings handling in perf tests

Add missed <stdexcept>

fix toUInt256 stack overflow

Doc. removed obsolete info about groupby / sum

* Draft

* Draft+

* host fixes

* host fixes

* ++

* ++

* +++

* Edits, part 1: + parametres and clarification

* Edits

* Fix host

* Update docs/en/sql-reference/aggregate-functions/reference/initializeAggregation.md
Co-authored-by: NBayoNet <da-daos@yandex.ru>

* nano-fixes and russian translation

* Final edits
Co-authored-by: NBayoNet <da-daos@yandex.ru>

removed obsolete info about sum

removed obsolete info about sum

removed obsolete info about groupby

removed obsolete info about groupby

Remove Converting step and transform. Order inputs for ActionsDAG.

Thus they will be applied on reconnects, since clickhouse-driver may
implicitly do it if the connection has been failed.

Since if the connection will be closed (by some reason), then the
setting will not be applied after transparent reconnect (since only
native clickhouse-client can do this, since it parses the query, but
perf tests uses python driver).

Just use inplace SETTINGS clause or <settings>.

std::logic_error is used at line 294, so the appropriate header is required.

wrong translation

Fixed a problem with the translation of the document

Improvements in coverage images

Implement tcpPort() function for tests

fix wrong translation

We are breaking backwards compatibility anyway (but agted by a setting)

Avoid breaking backwards compatibility by default for now.

More compatible watches in TestKeeper

Fix MaterializeMySQL SYNC failure when modify binlog_checksum

Allow formatting named tuples as JSON objects

Fix verbatim partition pruner.