[DUG] Create new table from existing one.

[Marshland Engineering]

I am using Dbase tables and when I create a new table from and existing one, the real number fields are being created as equivalent to integers. I was using TDBF from Sourceforge, so I reverted back to Delphi's own tables and I have exactly the same problem.

Using the Database desktop with the newly created file, all the real numeric fields have field names but incorrectly shown with no length. 
 Does Dbase have to have a certain numeric field length to work ?  
Probably not, because making the file manually, as below, should have then worked. 

Both options below make no difference.

   tblSave := TTable.Create(Application);
   with tblSave do begin
      Active:=False;
      TableType:=ttDBase;
      TableName := fFiles.eDir.text+'\'+fFiles.eFile.text+'.dbf';
      Name:=fFiles.eFile.text;

=>      FieldDefs.Assign(dm.tblOper.FieldDefs);  // Automatically assign 

=>      with FieldDefs do begin          // Manually Assign
         Clear;
         for i := 0 to (dm.tblOper.FieldCount -1) do Begin
            if dm.tblOper.Fields[i].Datatype=ftString then
             Add(trim(copy(dm.tblOper.Fields[i].Name,8,10)), ftString, 30, False);
            if dm.tblOper.Fields[i].Datatype=ftSmallint then
             Add(trim(copy(dm.tblOper.Fields[i].Name,8,10)), ftSmallint, 0, False);
            if dm.tblOper.Fields[i].Datatype=ftMemo then
             Add(trim(copy(dm.tblOper.Fields[i].Name,8,10)), ftMemo, 0, False);
            if dm.tblOper.Fields[i].Datatype=ftFloat then
             Add(trim(copy(dm.tblOper.Fields[i].Name,8,10)), ftFloat, 0, False);
          end;
      end;          

Look like the only way I can get a new file with the same structure is to use a dos copy, open the file and delete all the records.

Any other suggestions ?

Thanks Wallace

 
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