LIKE conditions are
search conditions with a LIKE predicate, to which the following rules apply:Only LIKE conditions that satisfy these prerequisites can use the Optimizer to determine an optimal
search strategy.Conditions with the format
...NOT (<column_spec> NOT LIKE <extended_value_spec>) are, where possible, converted into an expression <column_spec> LIKE <extended_value_spec>. The system then continues processing the condition in this converted format.