Can't query table with optional key

Hi guys,

I’m trying to query following statement.

let enmsSichtKstEnergiezentrale = table<EnmsSicht_KstEnergiezentrale>
let enmsSichtKstErzeuger = table<EnmsSicht_KstErzeuger>
let! plants =
                select {
                    for ez in enmsSichtKstEnergiezentrale do
                    join erz in enmsSichtKstErzeuger on (ez.KstStelle = erz.USER_KstUebergeordnet.Value)
                    orderBy ez.KstStelle
                }
                |> conn.SelectAsync<EnmsSicht_KstEnergiezentrale,EnmsSicht_KstErzeuger>

Sadly I run into following error: Could not get data "The given key was not present in the dictionary."

I have to join on a optional key. In this case erz.USER_KstUebergeordnet.Value.

Do you guys have an idea what could be the reason for that error message?

Thanks,

Tim

[JordanMarr]

Incoming PR…

[JordanMarr]

FYI, I just checked and groupBy worked fine with option types (I added a new unit test to make sure). So no other fix is needed.