Length of Expressions
When creating layout calculations that use complex expressions, limit the length of the expression to less than 1,000 tokens. A token is a keyword, identifier, constant, or special character symbol that the server identifies when it parses the SQL. For example, the expression 1+1+1+1+1+1+1+1+1+1 contains approximately 28 tokens, whereas the expression 1+1+1...+1 (400 times) contains more than 1000 tokens.
Tip: The Sales Commissions for Central Europe sample report in the GO Data Warehouse (analysis) package includes expressions.