isNotIn method
Tests whether this column differs from every value in values.
The iterable is consumed and non-null values are encoded immediately. An
empty collection is rejected so a dynamic exclusion cannot silently turn a
guarded mutation into a full-table operation. A Dart null candidate is
normalized through isNotNull. Without one, a nullable database value
retains SQL's unknown NOT IN result and does not match.
Implementation
SqlPredicate isNotIn(Iterable<T> values) =>
_membership(values, negated: true);