Trigger to insert data on the null columns

Hi all

How can I create triggers to insert data into a column null, this column is a Varchar2.

Thanks in advance.

Something like this:

create or replace the TRG_BI_MYTABLE before insert on MYTABLE for each line

Start

: new. MYCOLUMN: = nvl(:new.) MYCOLUMN, 'A value');

end;

Tags: Database

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