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postgreSQL Event Triggers

Examples

Logging DDL Command Start Events


Event Type-

• DDL_COMMAND_START

• DDL_COMMAND_END

• SQL_DROP


This is example for creating an Event Trigger and logging DDL_COMMAND_START events.

CREATE TABLE TAB_EVENT_LOGS(
 DATE_TIME TIMESTAMP,
 EVENT_NAME TEXT,
 REMARKS TEXT
);
CREATE OR REPLACE FUNCTION FN_LOG_EVENT()
 RETURNS EVENT_TRIGGER
 LANGUAGE SQL
 AS
 $main$
 INSERT INTO TAB_EVENT_LOGS(DATE_TIME,EVENT_NAME,REMARKS)
 VALUES(NOW(),TG_TAG,'Event Logging');
 $main$;
CREATE EVENT TRIGGER TRG_LOG_EVENT ON DDL_COMMAND_START
 EXECUTE PROCEDURE FN_LOG_EVENT();



Conclusion

In this page (written and validated by ) you learned about postgreSQL Event Triggers . What's Next? If you are interested in completing postgreSQL tutorial, your next topic will be learning about: postgreSQL Export database table header and data to CSV file.



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