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A system Server, you can also use a statement-level INSTEAD OF INSERT trigger to overwrite inserted values. When you sign in to comment, IBM will provide your email, first name and last name to DISQUS.trigger_test_api.g_LOOP DBMS_OUTPUT.put_line(trigger_test_api.g_tab(i)); END LOOP; trigger_test_api.g_tab.delete; END trigger_test_as_trg; / COLUMN object_name FORMAT A20 SELECT object_name, object_type, status FROM user_objects; OBJECT_NAME OBJECT_TYPE STATUS -------------------- ------------------- ------- TRIGGER_TEST_API PACKAGE VALID TRIGGER_TEST TABLE VALID TRIGGER_TEST_BS_TRG TRIGGER VALID TRIGGER_TEST_BR_TRG TRIGGER VALID TRIGGER_TEST_AR_TRG TRIGGER VALID TRIGGER_TEST_AS_TRG TRIGGER VALID 6 rows selected.SQL UPDATE trigger_test SET id = id; BEFORE STATEMENT - UPDATE BEFORE EACH ROW - UPDATE (new.id=2 old.id=2) AFTER EACH ROW - UPDATE (new.id=2 old.id=2) BEFORE EACH ROW - UPDATE (new.id=1 old.id=1) AFTER EACH ROW - UPDATE (new.id=1 old.id=1) AFTER STATEMENT - UPDATE 2 rows updated.You will also learn about different characters of triggers and their usage in the database.A trigger is a named PL/SQL block stored in the Oracle database and executed implicitly when a triggering event takes place.This article represents the bare minimum you should understand about triggers before you consider writing one.
The following code builds a collection of 5 records, then uses that to drive bulk inserts, updates and deletes on the TRIGGER_TEST table.
UPDATE_EMP_THRU_OUTEMP_VIEW' [email protected]&Gt update outemp set dname = 'OPERATIONS' where ename = 'C Farmer'; 1 row updated.
Summary: in this tutorial, you will learn about another named PL/SQL block called an Oracle trigger.
There are optional declaration and exception sections, like any other PL/SQL block, if required.
The "dml-event" can be one or more of the following.