public long?Read(ISqDataRecordReader recordReader, int ordinal) => !recordReader.IsDBNull(ordinal) ? recordReader.GetInt64(ordinal) : null;
public long Read(ISqDataRecordReader recordReader) => recordReader.GetInt64(this.ColumnName.Name);
public long Read(ISqDataRecordReader recordReader, int ordinal) => recordReader.GetInt64(ordinal);