### ClickHouse release v21.6.6.51-stable FIXME as compared to v21.6.5.37-stable
#### Bug Fix
* Backported in [#25850](https://github.com/ClickHouse/ClickHouse/issues/25850): `CAST` from `Date` to `DateTime` (or `DateTime64`) was not using the timezone of the `DateTime` type. It can also affect the comparison between `Date` and `DateTime`. Inference of the common type for `Date` and `DateTime` also was not using the corresponding timezone. It affected the results of function `if` and array construction. Closes [#24128](https://github.com/ClickHouse/ClickHouse/issues/24128). [#24129](https://github.com/ClickHouse/ClickHouse/pull/24129) ([Maksim Kita](https://github.com/kitaisreal)).
* Backported in [#25677](https://github.com/ClickHouse/ClickHouse/issues/25677): Fixed bug in deserialization of random generator state with might cause some data types such as `AggregateFunction(groupArraySample(N), T))` to behave in a non-deterministic way. [#24538](https://github.com/ClickHouse/ClickHouse/pull/24538) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Backported in [#25535](https://github.com/ClickHouse/ClickHouse/issues/25535): Fixed possible error 'Cannot read from istream at offset 0' when reading a file from DiskS3. [#24885](https://github.com/ClickHouse/ClickHouse/pull/24885) ([Pavel Kovalenko](https://github.com/Jokser)).
* Backported in [#25557](https://github.com/ClickHouse/ClickHouse/issues/25557): Fix potential crash when calculating aggregate function states by aggregation of aggregate function states of other aggregate functions (not a practical use case). See [#24523](https://github.com/ClickHouse/ClickHouse/issues/24523). [#25015](https://github.com/ClickHouse/ClickHouse/pull/25015) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
* Backported in [#25506](https://github.com/ClickHouse/ClickHouse/issues/25506): Fix segfault when sharding_key is absent in task config for copier. [#25419](https://github.com/ClickHouse/ClickHouse/pull/25419) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
* Backported in [#25765](https://github.com/ClickHouse/ClickHouse/issues/25765): Fix assertion in PREWHERE with non-uint8 type, close [#19589](https://github.com/ClickHouse/ClickHouse/issues/19589). [#25484](https://github.com/ClickHouse/ClickHouse/pull/25484) ([Vladimir C](https://github.com/vdimir)).
* Backported in [#25635](https://github.com/ClickHouse/ClickHouse/issues/25635): Fix wrong totals for query `WITH TOTALS` and `WITH FILL`. Fixes [#20872](https://github.com/ClickHouse/ClickHouse/issues/20872). [#25539](https://github.com/ClickHouse/ClickHouse/pull/25539) ([Anton Popov](https://github.com/CurtizJ)).
* Backported in [#25652](https://github.com/ClickHouse/ClickHouse/issues/25652): Fix null pointer dereference in `EXPLAIN AST` without query. [#25631](https://github.com/ClickHouse/ClickHouse/pull/25631) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
* Backported in [#25717](https://github.com/ClickHouse/ClickHouse/issues/25717): `REPLACE PARTITION` might be ignored in rare cases if the source partition was empty. It's fixed. Fixes [#24869](https://github.com/ClickHouse/ClickHouse/issues/24869). [#25665](https://github.com/ClickHouse/ClickHouse/pull/25665) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Backported in [#25696](https://github.com/ClickHouse/ClickHouse/issues/25696): Fixed `No such file or directory` error on moving `Distributed` table between databases. Fixes [#24971](https://github.com/ClickHouse/ClickHouse/issues/24971). [#25667](https://github.com/ClickHouse/ClickHouse/pull/25667) ([Alexander Tokmakov](https://github.com/tavplubix)).
* Backported in [#25755](https://github.com/ClickHouse/ClickHouse/issues/25755): Fix data race when querying `system.clusters` while reloading the cluster configuration at the same time. [#25737](https://github.com/ClickHouse/ClickHouse/pull/25737) ([Amos Bird](https://github.com/amosbird)).
#### NO CL ENTRY
* NO CL ENTRY: 'Partial backport [#24061](https://github.com/ClickHouse/ClickHouse/issues/24061) to 21.6'. [#25621](https://github.com/ClickHouse/ClickHouse/pull/25621) ([Vladimir C](https://github.com/vdimir)).
