SQL Server comes with a wide array of tools for monitoring your environment. There are logs and traces that provide information when errors occur, but these are often used passively to react to events that have already occurred.  There's PerfMon, and Profiler, and loads of Dynamic Management Views to check.  But where to look? As ...

When you're developing new Transact-SQL code or modifying some existing code, do you just launch directly into programming? I know that I did just that, for years. It wasn't until I was trying to performance tune some existing code that I realized I hadn't actually taken caching of data and execution plans into account. So all those modified ...