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SQL window functions provide extremely powerful and useful features that let you work with observations more easily. Different types explained here.
If you have an aggregation function (sum, avg, count) in your select clause or if you have a group by clause, all of your columns must be aggregated or grouped.<BR><BR>In the version of SQL that I ...
I realized how much easier my life would be if SQL had a mode() aggregate function. (I'm using it in the mathematical sense). I'm guessing that either I use SQL in a wierd way or there is a good ...
Join Embarcadero's upcoming webinar to learn how to simplify specialized reporting and combine aggregate functions with individual records. Webinar attendees will learn how to: ...