PostgreSQL Npgsql Versioning

[ghost]

It appears that NpgsqlTimeStamp does not exist in the nuget version of Npgsql 3.0.4. This means tables containing columns that use timestamp will drop columns. This is due to a combination of the behaviour of line https://github.com/fsprojects/SQLProvider/blob/master/src/SQLProvider/Providers.Postgresql.fs#L148 which filters out the type 'timestamp' (as it does not exist) and https://github.com/fsprojects/SQLProvider/blob/master/src/SQLProvider/Providers.Postgresql.fs#L423 which surpresses unknown types.

I suggest we either lock down SQLProvider to a specific Npgsql, or make the parsing of this more lenient.

[Thorium]

Is this fixed?

[Thorium]

If this is still issue, we can do

"timestamp without time zone", (if isLegacyVersion.Value
                                then namemap "NpgsqlTimeStamp"      ["Timestamp"]
                                else typemap<DateTime>              ["Timestamp"])