runReturning method
Runs this insert statement with a RETURNING clause, returning inserted
rows.
This method requires that source (and optionally also an upsertClause) have already been set (e.g. through values). For a method that does all of this, use insertReturning or insertReturningOrNull.
Implementation
Future<List<Row>> runReturning() async {
returningAll();
final result = await _run();
return returning!.interpretResults(_database, result, table);
}