Posts about ClickHouse from the LibreDB Studio blog.https://libredb.org/blog/engine/clickhouse/enhttps://libredb.org/blog/clickhouse-tls-platform-trust-store/https://libredb.org/blog/clickhouse-tls-platform-trust-store/An https URL sets TLS and moves the default port, but only the platform trust store applies, so a custom CA has nowhere to go on this transport.Sun, 26 Jul 2026 09:00:00 GMTLibreDBClickHouseEngineeringDatabasesSecurityhttps://libredb.org/blog/clickhouse-row-editing-alter-update/https://libredb.org/blog/clickhouse-row-editing-alter-update/A bare update statement answers not implemented on this engine, so no editable cell is offered, and the documented route reports zero rows changed.Thu, 25 Jun 2026 09:00:00 GMTLibreDBClickHouseEngineeringDatabaseshttps://libredb.org/blog/clickhouse-no-foreign-keys-diagram/https://libredb.org/blog/clickhouse-no-foreign-keys-diagram/An empty edge list here is the engine answer, not an unfinished read: no engine, no table setting and no DDL declares a foreign key anywhere.Tue, 12 May 2026 09:00:00 GMTLibreDBClickHouseEngineeringDatabaseshttps://libredb.org/blog/clickhouse-monitoring-system-tables/https://libredb.org/blog/clickhouse-monitoring-system-tables/Every ClickHouse monitoring panel is a read of a catalog the server already maintains, with two boundaries: a setting that empties one panel, and a counter nobody publishes.Wed, 25 Mar 2026 09:00:00 GMTLibreDBClickHouseEngineeringDatabaseshttps://libredb.org/blog/clickhouse-http-interface-8123/https://libredb.org/blog/clickhouse-http-interface-8123/Port 8123 is the whole transport, the native port is never used, and a permission denial arrives as a 500, so failures are read by exception code.Fri, 06 Feb 2026 09:00:00 GMTLibreDBClickHouseEngineeringDatabaseshttps://libredb.org/blog/clickhouse-explain-json-plan-trees/https://libredb.org/blog/clickhouse-explain-json-plan-trees/The estimated plan is the only plan there is, because this engine never executes the statement to produce one, so nothing in the view was measured.Sun, 21 Dec 2025 09:00:00 GMTLibreDBClickHouseEngineeringDatabases