Using GetLastAutoGenValue

Question

I am using fireDAC TFDQuery to insert values in informix database, using below code snippet:

with QHeaderQuery do
begin
  if not (Prepared) then
  begin
    {DatabaseName := Sessions.CurrentSession.Databases[0].DatabaseName;
    SessionName := Sessions.CurrentSession.SessionName;}
    Connection := FDManager.Connections[0];
    SQL.Clear;
    SQL.Add('insert into asptheade ( ');
    SQL.Add('theade_trans, theade_store,  theade_register, theade_location, ');
    SQL.Add('theade_date, theade_cashier, theade_type, theade_name, ');
    SQL.Add('theade_salesperson, theade_group, theade_group_disc, ');
    SQL.Add('theade_comm_flag, theade_comm_price, theade_cust_code, ');
    SQL.Add('theade_sub_total, ');
    SQL.Add('theade_tax_total, theade_disc_total, theade_grand_total, ');
    SQL.Add('theade_change_amt, theade_drawertime, theade_posted_date, theade_gratuity) ');
    SQL.Add('values ( :d0, :d1, :s2, :s3, ');
    SQL.Add(' current year to second, :s4, :s5, :s6, ');
    SQL.Add(':s7, :s8, :f9, ');
    SQL.Add(':s10, :s11, :s12, :f13, ');
    SQL.Add(':f14, :f15, :f16, :f17, :f18, :f19, :f20 ) ');
    Prepared := True;
  end;
  {SQL.Add( Format( 'values ( %d, %d, "%s", "%s", ',  }
  Params[0].AsInteger := FTrans;
  Params[1].AsInteger := FStore;
  Params[2].AsString := FRegister;
  Params[3].AsString := FLocation;
  {SQL.Add( Format( ' current, "%s", "%s", "%s", ',    }
  Params[4].AsString := FCashier;
  Params[5].AsString := FTransType;
  Params[6].AsString := FStatementText;
  {SQL.Add( Format( '"%s", "%s", %f, ',}
  Params[7].AsString := FSalesPerson;
  Params[8].AsString := FDiscGroup;
  Params[9].AsFloat := FDiscRate * 100;
  {SQL.Add( Format( '"%s", "%s", "%s", %f, ',}
  Params[10].AsString := FCommFlag;
  Params[11].AsString := FCommPrice;
  Params[12].AsString := FCustCode;
  Params[13].AsFloat := FSubTotal;
  {SQL.Add( Format( '%f, %f, %f, %f ) ',}
  Params[14].AsFloat := FTaxTotal;
  Params[15].AsFloat := FDiscTotal;
  Params[16].AsFloat := FGrandTotal;
  Params[17].AsFloat := FChangeAmt;
  Params[18].AsDateTime := FDrawerTime;
  Params[19].AsDateTime := FServiceDate;
  Params[20].AsFloat := FGratuity;

  Execute;
  FValid := True;
end;
FTrans :=   FDManager.Connections[0].GetLastAutoGenValue('asptheade');
QHeaderQuery.Close;

I am getting Capability not supported. I even tried empty string instead of but again the same error. Can you please guide me with the proper usage of GetLastAutoGenValue? I am using dbExpress bridge driver.

Answer 1

I made it work out using following query in my stored proc:

SELECT DBINFO('sqlca.sqlerrd1') FROM SYSTABLES WHERE tabname = '<tablename>'

and return the same value in Stored Proc.