Crystal Reports for Rational Application Developer 设计员指南

//Expressions example
//The first expression. Its value is the Number
//value 30
10 + 20;
//The second expression. Its value is the String
//"Hello World". It takes up two lines.
"Hello " +
"World";
//The third expression. Its value is of Number type
{Orders Detail.Quantity} * 2 - 5;
//The fourth expression. Its value is of String type
If {Orders Detail.Quantity} > 1 Then
"multiple units"
Else
"one unit";
//The fifth and final expression. Its value is the
//Number value 25
20 + 5

20 + 5;