Dapper maps when all columns listed, but not with * for select list

[Crisfole]

I really don't know why this happens, but Dapper is having trouble mapping columns with underscore matching enabled, but only when I use SELECT * or SELECT alias.* in my SQL.

The following class:

public record TableExample(
  Guid ExampleUuid,
  int SecretId,
  string Name,
  DateTime ValidStart,
  DateTime? ValidEnd
);

Does not work for this sql:

select tbl.* from TableExamples

But does work for this sql:

select example_uuid, secret_id, name, valid_start, valid_end from TableExample

The error is complaining (barely paraphrased because my console scrolled past my history limit):

an empty constructor or a constructor matching (System.Guid example_uuid, System.Int32 secret_id, System.String name, System.DateTime valid_start, System.DateTime valid_end) is required for Parking.API.Integrations.OdeVehicle materialization.

I can't really figure out how to debug this. I only managed to figure out the workaround by manually mapping in the query with Pascale case columns, and then deleting half at a time in search for the failure to map. The DateTime? doesn't seem to be it because it works.

[Tim-Maes]

Does the issue also occur when you use prototype to map the results?

As in

connection.QueryAsync(
        """
            SELECT *
            FROM TableExamples
            """,
        prototype: new {
            SecretId = default,
            Name = string.Empty,
            // other fields to map
        }
    )

I experience the same issue if I don't explicitly map the properties using prototype for the object

[Crisfole]

I'm mapping to existing Record types, not anonymous types, so I don't think that applies here.

[Crisfole]

I added a (maybe) repro in #2029 I hope it helps. I can't get the tests running locally, but it demoes my theory. I'd love a hand getting the tests running so I can adequately express what's going on.