trigger in postgresql to change incoming entry

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Noemi
25 Jun 2017
1CREATE or REPLACE FUNCTION func()
2RETURNS TRIGGER
3AS $$
4BEGIN
5NEW.columnname = 0;
6RETURN NEW;
7END;
8$$
9LANGUAGE plpgsql;
10
11-- Statement to make trigger to execute above code --
12CREATE TRIGGER change_incoming BEFORE INSERT on Tablename 
13FOR EACH ROW EXECUTE PROCEDURE func();
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