* base refactoring

* adjust links

* Update index.md

Fix TTL after renaming column.

* DOCSUP-1377 (netloc function) (#135)

* add EN description

* changes in query

* changes after review

* add RU description

* CLICKHOUSEDOCS-679: Text fixes.
Co-authored-by: NSergei Shtykov <bayonet@yandex-team.ru>
Co-authored-by: Nemironyuk <em@don.ru>
Co-authored-by: NEvgenia Sudarikova <56156889+otrazhenia@users.noreply.github.com>

Fix virtual columns filter

Fix typo in setting name

Fix dictGet arguments check during GROUP BY injective functions elimination

Fix over-limiting the number of threads for union.

Cap max_memory_usage* limits to the process resident memory

Fix skip lists for old branches

Bump arrow to 0.17 (and flatbuffers to v1.12, required by arrow)

* first try

* change submodule

* Update .gitmodules

* include build directory

* Update .gitmodules
Co-authored-by: NNikita Mikhailov <jakalletti@jakalletti-build.sas.yp-c.yandex.net>

Fix strange code CC @Enmk. Prove: g++ -xc++ -include vector - <<< 'int main() { return std::vector<const char>{1, 2, 3}.size(); }'

gcc10/cmake build fixes

Fix rare hanging in DNSResolver

Show error after TrieDictionary failed to load.

This reverts commit d199961e.

Headers for CSVWithNames in StorageFile

AST-based query fuzzing mode for clickhouse-client

Fix arrayFill for empty arrays.