Oracle trigger inserting or updating
You might omit this clause if you just want to record the fact that the operation occurred, but not examine the data for each row.
Once the trigger is created, entering the following SQL statement: A trigger is either a stored PL/SQL block or a PL/SQL, C, or Java procedure associated with a table, view, schema, or the database itself.
I seem to remember that there is a variable that gets set to values like 'UPD", 'INS' and 'DEL' when a trigger fires.
What is that variable called and how is it accessed in a trigger.
These triggers provide a way of updating elements of the nested table. CALL foo (ora_login_user) / CREATE OR REPLACE PROCEDURE Before_delete (Id IN NUMBER, Ename VARCHAR2) IS language Java name 'thjv Triggers.before Delete ( CHAR)'; CREATE OR REPLACE TRIGGER Pre_del_trigger BEFORE DELETE ON Tab FOR EACH ROW CALL Before_delete (:old. Ename) Within a trigger body of a row trigger, the PL/SQL code and SQL statements have access to the old and new column values of the current row affected by the triggering statement.
Trigger names need not be unique with respect to other schema objects, such as tables, views, and subprograms.If this privilege is later revoked, you can drop the trigger but not alter it.The object privileges to the schema objects referenced in the trigger body must be granted to the trigger owner explicitly (not through a role).A column list cannot be specified for statement trigger fires again.
The rollback to savepoint does not undo changes to any package variables referenced in the trigger.
The row correlation variables inside the trigger correspond to the nested table element. Depending on the type of triggering statement, certain correlation names might not have any meaning.