Trigger updating inserting dating without marriage in mind

DML triggers cannot be defined on local or global temporary tables.

DATABASE Applies the scope of a DDL trigger to the current database.

trigger updating inserting-1

Trigger names exist in the schema namespace, meaning that all triggers must have unique names within a schema.

Triggers in different schemas can have the same name.

In addition to the requirement that trigger names be unique for a schema, there are other limitations on the types of triggers you can create.

In particular, there cannot be multiple triggers for a given table that have the same trigger event and action time.

If specified, the trigger fires whenever occurs in the current database.

ALL SERVER Applies to: SQL Server 2008 through SQL Server 2017.

create Trigger Trg before insert or update of c1,c2 on T1 for each row begin if inserting then :new.c1 := 'A'; :new.c2 := 'B'; end if; if updating then if :old.active = 'INACTIVE' then raise_application_error(-20000,'do not update'); else if :old.active = 'FALSE' then insert query on T1(c1,c2) values(:new.c1,:new.c2); else insert query on T1(c1,c2,active) values(:old.c1,:old.c2,'FALSE'); end if; end if; end if; end; / Hi All, I have write update code using merge and I have written Insert code as well.

My requirement is when effective_date = current_date it should update and if it is not equal then it should insert.

Hello Tom- my requirement is When a record is inserted into ERR table, a post-event trigger will fire updating the D field to accept sys date (3 columns has to update in my original requirement).

I've written the below code, however after the record is inserted it's not being updated with sys date in D rather I got the mutating error. SQL insert into err(x) values(2); insert into err(x) values(2) * ERROR at line 1: ORA-04091: table ERR is mutating, trigger/function may not see it ORA-06512: at "TRIG_2", line 3 ORA-04088: error during execution of trigger 'TRIG_2' SQL thank you very much for your help and suggestions.

A trigger is a special kind of stored procedure that automatically executes when an event occurs in the database server.

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