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94f86eda79
* Some improvements for introduction/performance.md
* Minor improvements for example_datasets
* Add website/package-lock.json to .gitignore
* YT paragraph was badly outdated and there is no real reason to write a new one
* Use weird introduction article as a starting point for F.A.Q.
* Some refactoring of first half of ya_metrika_task.md
* minor
* Weird docs footer bugfix
* Forgotten redirect
* h/v scrollbars same size in docs
* CLICKHOUSE-3831: introduce security changelog
* A bit more narrow tables on docs front page
* fix flag in ru docs
* Save some space in top level of docs ToC
* Capitalize most words in titles of docs/en/
* more docs scrollbar fixes
* fix incorrect merge
* fix link
* fix switching languages in single page docs mode
* Update mkdocs & mkdocs-material + unminify javascript
* cherrypick 17e18d1ecc
7 lines
482 B
Markdown
7 lines
482 B
Markdown
# ClickHouse Features that Can be Considered Disadvantages
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1. No full-fledged transactions.
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2. Lack of ability to modify or delete already inserted data with high rate and low latency. There are batch deletes available to clean up data that is not needed anymore or to comply with [GDPR](https://gdpr-info.eu). Batch updates are currently in development as of July 2018.
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3. Sparse index makes ClickHouse not really suitable for point queries retrieving single rows by their keys.
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