PostgreSQL SQLSTATE 09000 triggered_action_exception occurs when a statement executed inside a trigger raises an error or violates a constraint.
triggered_action_exception is PostgreSQL’s SQLSTATE 09000 raised when code inside a trigger fails – typically due to constraint violations, NULL issues, or logic errors. Check the failing statement in the trigger function, add proper exception handling, and validate data before writing to fix the error.
triggered_action_exception
PostgreSQL raises SQLSTATE 09000 triggered_action_exception when any SQL statement executed by a trigger function fails.
The exception halts the outer data-modifying statement and rolls back its effects unless wrapped in a savepoint.
Because triggers often run automatically, this error can appear even when the triggering INSERT, UPDATE, or DELETE seems correct.
The most common cause is a constraint violation inside the trigger, such as inserting duplicate keys or NULLs into non-nullable columns.
Programming mistakes in PL/pgSQL functions, missing privilege on referenced tables, or runtime errors in called procedures also surface as triggered_action_exception.
Identify the exact statement that failed by enabling client_min_messages=DEBUG or adding RAISE NOTICE calls inside the trigger.
Add exception handling blocks in the trigger function, fix constraint violations, or adjust business logic.
Use deferred constraints when ordering of operations matters.
Foreign-key cascade triggers may fail when the child table lacks matching rows. Ensure referential integrity with EXISTS checks before insert.
Audit triggers that copy rows to a history table can fail if the history table schema diverges; sync column definitions or list columns explicitly.
Keep trigger functions small and deterministic. Validate inputs before performing writes.
Surround risky statements with EXCEPTION WHEN OTHERS THEN ...
to log problems without aborting the main transaction.
integrity_constraint_violation (23502, 23503, 23505) arises from similar data issues but outside triggers. Fix by enforcing data quality.
invalid_sql_statement_name (26000) appears if a dynamic SQL string in the trigger is malformed. Double-check generated SQL.
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Yes, unless the failing statement is inside a nested savepoint or you catch the exception with a PL/pgSQL EXCEPTION block.
Use ALTER TABLE mytable DISABLE TRIGGER mytrigger; but remember to re-enable it after maintenance.
Query pg_trigger for triggers on the table and check function definitions or enable log_error_verbosity=verbose.
Galaxy’s editor shows in-context PL/pgSQL linting, highlights unhandled exceptions, and lets teams endorse tested trigger functions to avoid runtime surprises.
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