firedac connection sqlite date, datetime type of problem

TDFConnection:

        stringformat:unicode

        datetimeformat:datetime    

sqlite datetime type in a string type is stored, when reading, the database is a numeric or floating point type pattern or string can be read correctly.

TDFConnection:

        string format: pretty

        datetimeformat: datetime write: date or time digital dots pure form. datetime float.

                                  string write: string.