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ClickHouse® is a real-time analytics DBMS
195b4c47ea
Before this patch ttl.txt will not be written for per-column TTLs, and
hence it will be calculated every time after server restart of
DETACH/ATTACH cycle (note, that it will work w/o restart since in-memory
representation will avoid this).
v2: convert test to .sh to get correct current database over default for MV
v3: extract UUID to avoid error like in [1]:
[ 490 ] {} <Error> void DB::SystemLog<DB::TextLogElement>::flushImpl(const std::vector<LogElement> &, uint64_t) []: Code: 349. DB::Exception: Cannot convert NULL value to non-Nullable type: While processing query_id LIKE concat('%', CAST(_CAST(NULL, 'Nullable(UUID)') AS uuid, 'String'), '%'): while pushing to view test_0hc2ro.this_text_log (c64e5af4-059e-4330-a728-354ecf83c031). (CANNOT_INSERT_NULL_IN_ORDINARY_COLUMN)
[1]: https://s3.amazonaws.com/clickhouse-test-reports/35820/a512d322b024d37d2f1082c4833f59f86057555f/stateless_tests_flaky_check__address__actions_.html
v4: add no-parallel to avoid issues with disappeared underlying table while pushing to text_log
Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
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ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time.
Useful Links
- Official website has a quick high-level overview of ClickHouse on the main page.
- Tutorial shows how to set up and query a small ClickHouse cluster.
- Documentation provides more in-depth information.
- YouTube channel has a lot of content about ClickHouse in video format.
- Slack and Telegram allow chatting with ClickHouse users in real-time.
- Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
- Code Browser (Woboq) with syntax highlight and navigation.
- Code Browser (github.dev) with syntax highlight, powered by github.dev.
- Contacts can help to get your questions answered if there are any.