eval method
Evaluate this expression in the context of row (column name -> value).
Implementation
@override
Object? eval(Map<String, Object?> row) {
final v = value.eval(row);
if (v == null) return null;
final list = run(row);
for (final ev in list) {
if (ev != null && sqlEq(v, ev)) return !negated;
}
return negated;
}