query method
Executes a single query.
Implementation
@override
Future<DbQueryResult> query(
String sql, Map<String, dynamic> substitutionValues,
{List<String> returningFields = const [],
String? tableName,
Map<String, QueryHint> hints = const {}}) {
return _pool.withResource(() async {
var executor = await _next();
return executor.query(sql, substitutionValues,
returningFields: returningFields, tableName: tableName, hints: hints);
});
}