I've got data in this form: CallNum Value Accepted -------------------------------------- 971374 81.482204444473609 True 971374 83.783551111089764 False 971374 97.936875555547886 ...
I'm in a situation where I want to get the minimum value from of 6 columns. I've found three ways so far to accomplish this, but I have concerns with the performance of these methods and would like ...
I’ve hit a wall and would like some expert advice. I’m building a data warehouse and don’t quite understand whether the calculations (also time aggregations) should be done in SQL (T-SQL and CTE) or ...
I'm just curious why an aggregate query runs so much faster with a GROUP BY clause than without one. For example, this query takes almost 10 seconds to run SELECT MIN(CreatedDate) FROM MyTable WHERE ...
What is the best or most efficient way to get multiple aggregate result values? Basically I have an email app and wanted to get all the numbers of messages for each type of folder (inbox, sent, ...