C H A P T E R 9
Variables, Parameters, and Expressions
Old expressions are the best, and short ones even better.
—Prime Minister Winston Churchill
In order to create modular and robust solutions, developers will often create variables and routines to access those variables. Integration Services is no different in this regard. The variables available to SSIS have their own data types that often correlate to SQL Server data types. Parameters are used to pass values between parent and child packages to extend the modularity of an ETL project. And an expression language is provided to allow the ETL process to read or modify the values of both during runtime. The expression language can certainly get convoluted, so it is recommended that you take ...
Get Pro SQL Server 2012 Integration Services now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
