The VIEW_DEFINITION column has most of what you see in the Create Table field that SHOW CREATE VIEW produces. Skip the words before SELECT and skip the words WITH CHECK OPTION. Suppose that the original statement was:

CREATE VIEW v AS
  SELECT s2,s1 FROM t
  WHERE s1 > 5
  ORDER BY s1
  WITH CHECK OPTION;

Then the view definition looks like this:

SELECT s2,s1 FROM t WHERE s1 > 5 ORDER BY s1

The CHECK_OPTION column always has a value of NONE.

The IS_UPDATABLE column is YES if the view is updatable, NO if the view is not updatable.

The DEFINER and SECURITY_TYPE columns were added in MySQL 5.0.14. DEFINER indicates who defined the view. SECURITY_TYPE has a value of DEFINER or INVOKER.