LibreDB Studio — PostgreSQL postsPosts about PostgreSQL from the LibreDB Studio blog.https://libredb.org/blog/engine/postgresql/enThe admin-only audit trail of executed querieshttps://libredb.org/blog/postgresql-query-audit-trail-admin-only/https://libredb.org/blog/postgresql-query-audit-trail-admin-only/A searchable history of statements, outcomes and error detail, readable by admins only, and on this engine it also records what the agent was permitted to run.Tue, 25 Aug 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringSecurityWhat a pasted managed PostgreSQL URL configureshttps://libredb.org/blog/postgresql-managed-url-ssl-modes/https://libredb.org/blog/postgresql-managed-url-ssl-modes/Host-heuristic SSL turns encryption on without verifying the certificate, and two sslmode values are declined by name rather than guessed at.Thu, 20 Aug 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesSecurityWhich PostgreSQL health numbers need an extension or a granthttps://libredb.org/blog/postgresql-health-panels-extension-gated/https://libredb.org/blog/postgresql-health-panels-extension-gated/A tour of the health surface organised by what is missing and why, because a panel that reads Not measured is the only version an operator can act on.Tue, 11 Aug 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesThe Explain button runs your query, the agent plan read does nothttps://libredb.org/blog/postgresql-explain-analyze-executes/https://libredb.org/blog/postgresql-explain-analyze-executes/Two EXPLAIN forms with different consequences: the editor emits the executing one, and the agent path emits the planning one only.Wed, 15 Jul 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesForeign-key diagrams on a schema with a hundred tableshttps://libredb.org/blog/postgresql-er-diagram-two-phase-introspection/https://libredb.org/blog/postgresql-er-diagram-two-phase-introspection/The schema tree renders before relationships arrive, and every introspection CTE is materialized on purpose: a 122-table read measured about 295 seconds before the change and about 2.6 seconds after.Tue, 09 Jun 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesHow the editor bounds a PostgreSQL result sethttps://libredb.org/blog/postgresql-editor-automatic-row-limits/https://libredb.org/blog/postgresql-editor-automatic-row-limits/Automatic LIMIT injection applies to unbounded SELECT and CTE-SELECT statements only, and there is one statement shape it deliberately leaves alone.Wed, 22 Apr 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesConnecting Studio to PostgreSQL running in Dockerhttps://libredb.org/blog/postgresql-connect-docker-container/https://libredb.org/blog/postgresql-connect-docker-container/The container-to-container case is the one that breaks: when Studio is itself a container, localhost is its own loopback and the service name is the fix.Fri, 06 Mar 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesWhere the read-only boundary lives on a PostgreSQL agent runhttps://libredb.org/blog/postgresql-agent-read-only-boundary/https://libredb.org/blog/postgresql-agent-read-only-boundary/Containment is the database itself - a read-only transaction, exactly one statement on the extended protocol, then ROLLBACK and DISCARD ALL.Sun, 18 Jan 2026 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesSecurityCreating the PostgreSQL role agent mode will accepthttps://libredb.org/blog/postgresql-agent-least-privilege-role/https://libredb.org/blog/postgresql-agent-least-privilege-role/Agent AUTO mode refuses a superuser connection outright, so the deployment task is a login holding CONNECT, USAGE and SELECT and nothing else.Mon, 01 Dec 2025 09:00:00 GMTLibreDBPostgreSQLEngineeringDatabasesSecurity