title: How do you unit test your T-SQL
body: <p>How do you unit test your T-SQL? Which libraries/tools do you use?</p>
  
  <p>What percentage of your code is covered by unit tests and how do you measure it?
  How do you decide which modules to unit test first?</p>
  
  <p>Do you think the time and effort which you invested in your unit testing harness has paid off or not?</p>
  
  <p>If you do not use unit testing, can you explain why not? </p>