Excel's GROUPBY function lets you group and aggregate data based on certain fields in your table of data. It also offers arguments that allow you to sort and filter your data, so you can tailor the ...

The aggregate functions are often used with the GROUP BY clause to calculate an aggregate value for each group e.g., the average value by the group or the sum of values in each group. The following ...

SQL is a tool that is widely used in the manipulation of data and featuring in the relational database. They are applied in querying, manipulating as well as reporting data and it is commonly used by ...

SQL window functions provide extremely powerful and useful features that let you work with observations more easily. Different types explained here.

SQLite has nice feature which allows to register custom aggregate functions written in C (and Lua in case of Tarantool) and available from SQL like any other. Example is count_x() which counts numb ...

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 ...