postgres

Safe read-only PostgreSQL queries are executed by enforcing query validation that allows only SELECT, EXPLAIN, and SHOW statements. The system establishes read-only sessions, enforces single-statement execution, and applies per-query timeouts to prevent write operations across multiple configured databases.

Exploring schemas without accidental writes requires a read-only interface that enforces query validation for SELECT, EXPLAIN, and SHOW statements. This approach blocks write operations through single-statement enforcement and read-only sessions, ensuring safe schema discovery and data analysis.

PostgreSQL query validation supports data analysis but implements a result cap to prevent large outputs. It also enforces per-query timeouts, ensuring that data fetching and quick health checks across configured databases remain controlled and do not overwhelm the system.

Single-statement execution for SQL queries is enforced by a validation layer that blocks multi-statement inputs. Combined with read-only sessions and a whitelist of SELECT, EXPLAIN, and SHOW commands, this mechanism ensures only one safe, validated query runs at a time.

The limitations of read-only sessions for PostgreSQL data discovery include the inability to perform write operations, execute multi-statement queries, or bypass per-query timeouts. Additionally, a result cap is enforced to prevent large outputs, restricting bulk data extraction.