Assignment 1 (SQL CC - Basic)

Update Info

Last Script Update : 09 Nov 2015
Level : Basic

Assignment : To Create the Unit Price Calculation

• Create a UDF_mUnitPrice DIY fields in Sales documents (eg. sales invoice)
• Purpose: User will key-in the base unit price to convert into new unit price based on the UOM rate in Maintain Stock Item.

• Calculation for Unit Price := UDF_mUnitPrice x Rate

Steps

01. Click Tools | DIY | SQL Control Center...

02. At the left panel look for Sales Invoice

03. Right Click the Sales Invoice

04. Select New Event

05. Enter any name (eg Calc) in the Name field (Only Alphanumeric & no spacing)

06. Select OnGridColumnValueChanged for Event field

07. Click OK

08. Click the Calc (name create at Step 5 above) on the left panel

09. Copy below script & paste to the Right Panel (Script Section)

var FComServer, lBizObj : Variant;
    cdsData : TClientDataSet;

function ComServer: Variant;
begin
  if FComServer = Null then begin
    FComServer := CreateOleObject('SQLAcc.BizApp');
  end;
  Result := FComServer;
end;

procedure GetStockInfo;
var lSQL, lCode  : String;
begin
  FComServer := null;
  cdsData    := TClientDataSet.Create(nil); // Create & preparing Component
  try
    lCode := Dataset.FindField('ItemCode').AsString;     
    lSQL  := Format('SELECT UDF_Length, UDF_Width FROM ST_ITEM WHERE Code=%s',[QuotedStr(lCode)]);

    cdsData.Data := ComServer.DBManager.Execute(lSQL);
  finally
    lBizObj    := null;
    FComServer := null;
  end;
end;

begin
  if SameText(EditingField, 'ItemCode') OR // when selecting or change itemcode field
     SameText(EditingField, 'UDF_Rate') then begin // when change UDF_Rate field
    try
      GetStockInfo; // Get UDF_Length & UDF_Width from Maintain Item

      // Below is Set the Invoice detial UDF Fields from Maintain Item UDF Fields
      DataSet.FindField('UDF_Length').AsFloat := cdsData.FindField('UDF_Length').AsFloat;
      DataSet.FindField('UDF_Width').AsFloat  := cdsData.FindField('UDF_Width').AsFloat;

      // Below is doing calculation for Qty := UDF_Length * UDF_Width * UDF_Rate
      DataSet.FindField('Qty').AsFloat        := DataSet.FindField('UDF_Length').AsFloat *
                                                 DataSet.FindField('UDF_Width').AsFloat *
                                                 DataSet.FindField('UDF_Rate').AsFloat;
    finally
      cdsData.Free; // Free the Component after used
    end;
  end;
end.

10. Click Save button

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Avoid update below field in same time as will cause unlimited looping updating each other - Qty - UnitPrice - TaxAmt - Amount

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