Views
Select triggers execute a triggered action for views whose base tables contain a reference to a triggering column. You cannot, however, define a Select trigger on a view.
Suppose you create
the following view:
CREATE VIEW view_tab AS
SELECT * FROM tab_a;
The following statements
execute a triggered action on the hits_trig trigger for each
instance of a row that the view returns:
SELECT * FROM view_tab;
SELECT col_a FROM tab_a;