Using expressions and procedures

An expression is a combination of identifiers and operators that can calculate a single value. A simple expression can be a variable, a constant, an attribute, or a scalar function. Operators can be used to join two or more simple expressions into a complex expression.

Examples of expressions are:

'Miller'
uConcat("Time ", "goes by")
(uMid(SA_ORDERDATE, 1, 10) >= '1998-01-01')
[uTracelevel(3)]

A procedure is a programming unit that includes expressions, statements, and control structures. A procedure can be written in JavaScript.

Examples of procedures are:

• if (IN.PR_PRICE < 250)
         OUT.PR_GROUP2 = 'low end' ;
  else {
      if (IN.PR_PRICE < 1000)
         OUT.PR_GROUP2 =  'mid range';
      else 
         OUT.PR_GROUP2 = 'high end'; 
  }