Optimal way to store datetime values in SQLite database (Delphi)

Question

I will be storing datetime values in an SQLite database (using Delphi and the DISqlite library). The nature of the db is such that it will never need to be transferred between c

Answer 1

I don't know if this answer is applicable to the DISqlite library but...
Below is some code that illustrates what works for me using both Delphi 2010 and Tim Anderson's SQLite3 wrapper.

SQL to create field:

  sSQL :=  'CREATE TABLE [someTable] (' +
            '  [somefield1] VARCHAR(12),' +
            '  [somefield2] VARCHAR(12),' +
            '  [myDateTime] DATETIME );';

SQL to populate field:

 sSQL := 'INSERT INTO someTable(somefield1, somefield2, myDateTime)' + 
         '  VALUES ( "baloney1", "baloney2","' + FloatToStr(Now) + '");';

Example of retrieving data from field:

var
sDBFilePathString: string;
sl3tbl: TSqliteTable;
fsldb : TSQLiteDatabase;
FromdbDTField : TDateTime;

begin
   ...
   ... 
    fsldb := TSQLiteDatabase.Create(sDBFilePathString); 
    sl3tbl := fsldb.GetTable('SELECT * FROM someTable');
    FromdbDateTime := StrToFloat(sl3tbl.FieldAsString(sl3tbl.FieldIndex['myDateTime']));
    Showmessage('DT: ' + DateTimeToStr(FromdbDTField));
end;

Result:

**DT: 10/10/2013 1:09:53 AM**

Like I mentioned on the first line - I don't know if this will work with the DISqlite library but if it does its a pretty clean way of handling things. I leave it to you to make things prettier or more elegant.