Edmund Schweppe questions

Edmund Schweppe answers

• Delete Doc files and keep Docx files [duplicate]
• How to group rows (bassed on CustomerID) using Pivot in SSIS?
• Automated testing feels a lot like duplicating the tested logic, am I doing it right?
• Format Negative numbers in parenthesis BUT NOT with $ symbol?
• Remove rows with same keys
• Is it better to sort data at the application layer, or with an order by clause?
• How to choose TDD starting point in a real world project?
• Should all classes be testable?
• Create a wrapper around a third party dll to abstract the dll and to be able to unit test my code
• How to use the same foreach code for 2 collections?