Re: Method of subtracting two fields

null@example.com (argonx) — Mon, 08 Mar 2021 07:50:51 +0000

Add calculated field and add formula:

( field1 - field2 )

Or if You need to permanently add it You will need formula

procedure frmUlazS_Button1_OnClick (Sender: TObject; var Cancel: boolean);
Begin
         SqlExecute('Update TABLE1 Set amount = amount - ' + frmUlazS.Edit2.sqlValue + ' Where id = ' + frmUlazS.ComboBox1.sqlValue);
end;

Method of subtracting two fields

null@example.com (abu7akm) — Mon, 08 Mar 2021 06:57:26 +0000

please help
Method of subtracting two fields

My Visual Database — Method of subtracting two fields

Re: Method of subtracting two fields

Method of subtracting two fields