Data Provider Variable statement

It is one of the three main components of the Data Provider output-based declarative language.

Sometimes it is necessary to make internal calculations that do not necessarily have to go into the Output itself. Variables are used in this case, in a Data Provider Group statement.

Syntax

 &var = <Formula> 

View Syntax conventions

Where: 

&var
     Is the name of the variable.

Formula
     Is a conditional Formula (horizontal as well as aggregate or Compound). That is, it could be several conditional expressions. This includes either an isolate attribute, or an invocation to a procedure with output or a Data Provider, a constant, as well as the typical formulas. 

Samples

Customers
{
   &TotalCustomers = 0
   Customer
   {
      CustomerId = CustomerId
      CustomerName = CustomerName
      &TotalCustomers = &TotalCustomers + 1
   }
   Summary
   {
      Total = &TotalCustomers 
   }
}