Expression Language Patterns
The expression language in SSIS might appropriately be referred to as the glue that holds the product together. Expressions in SSIS provide a relatively simple and easy-to-use interface to allow data developers to introduce dynamic logic into the ETL infrastructure. When you think through the various moving parts within Integration Services, you’ll likely discover that you can manipulate all of them in one way or another by using expressions.
Expressions provide a fast, effective, and, dare I say, fun way to solve specific ETL challenges. In this chapter, we’ll look into some of the basics of the expression ...