Oracle sql trigger if updating

Posted by / 25-Dec-2017 11:31

Oracle sql trigger if updating

NEXTVAL INTO : NEW.my_col3 FROM DUAL; END IF; IF : NEW.my_col4 IS NULL THEN (...) END IF; END IF; END; / -- Scenario 2 CREATE OR REPLACE TRIGGER my_trg1 BEFORE INSERT ON my_table FOR EACH ROW BEGIN IF : NEW.my_col3 IS NULL THEN SELECT my_seq.

NEXTVAL INTO : NEW.my_col3 FROM DUAL; END IF; IF : NEW.my_col4 IS NULL THEN (...) END IF; END; / CREATE OR REPLACE TRIGGER my_trg2 BEFORE UPDATE ON my_table FOR EACH ROW BEGIN IF : NEW.my_col IS NULL THEN raise_application_error(...); END IF; IF : NEW.my_col2 IS NULL THEN : NEW.my_col2 := (...); END IF; END; / I can't see any major advantage to one or the other.

So the reporting table should be like this: --------------------------------------------- | PK | Name | Address | Postal Code | --------------------------------------------- | 2 | | | 44444 | | 3 | | Dtreet7 | | --------------------------------------------- CREATE OR REPLACE TRIGGER vr_reporting_trigger AFTER UPDATE ON orig_tab FOR EACH ROW BEGIN IF inserting THEN INSERT INTO rep_tab(pk, name, address, code) SELECT :new.pk, :new.name, :new.address, :new,code FROM DUAL WHERE NOT EXISTS (SELECT 1 FROM rep_tab WHERE pk = :new.pk); UPDATE rep_tab t SET = :new.name, t.address = :new.address, = :WHERE = :new.pk; ELSIF updating THEN IF ::THEN UPDATE rep_tab t SET = :new.name, t.address = :new.address, =: WHERE = :; END IF; MERGE INTO rep_tab d USING DUAL ON (= :old.pk) WHEN MATCHED THEN UPDATE SET = :new.name, d.address = :new.address, =: WHEN NOT MATCHED THEN INSERT (d.pk,d.name, d.address, d.code) VALUES (:new.pk,:new.name, new.address, new.code); END IF; END; --------------------------------------------- | PK | Name | Address | Postal Code | --------------------------------------------- | 2 | BB | Street2 | 44444 | | 3 | CC | Dtreet7 | 33333 | --------------------------------------------- In an UPDATE trigger, a column name can be specified with an UPDATING conditional predicate to determine if the named column is being updated. SELECT [profile_id] ,[profile_name] , CASE [agent_type] WHEN 1 THEN ' ' WHEN 2 THEN ' ' WHEN 3 THEN ' ' WHEN 4 THEN ' ' WHEN 9 THEN ' ' ELSE ''END ,[type] , ISNULL ([description], '') AS description ,[def_profile] FROM [msdb].[dbo].[MSagent_profiles] ORDER BY [profile_id] . Replication Snapshot Agent (Replication Snapshot Agent) . SQL Server 2000 : "C:\Program Files\Microsoft SQL Server\COM". , : - Replication Distribution Agent ( ); - Replication Snapshot Agent ( ); - Replication Merge Agent ( ); - Replication Log Reader Agent ( ).

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SQL Notice in the last update it indicated that x and y both were being updated (which they were), but the update didn't change the value (both x and y were 1 prior to the update which set them to 1). You can use updating (column) but it will only tell you that the column itself is being updated and not if the value has changed.

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