Here are the main differences in VARCHAR between SQL Server and PostgreSQL: In SQL Server, the 'N' in N'...' represents 'National Character Set' and is used to identify Unicode strings. The core ...

Manually querying V$ views or AWR is inefficient and difficult to track over the long term. Through automated s, we can ...

When you need to count cells with numbers that meet certain criteria, or those that are blank, use the COUNT functions in Microsoft Excel.

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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.

COUNTA function with multiple criteria counts how many arguments are in the list of arguments. Learn how to use COUNTA function in Excel.

Some good news for those of you using DirectQuery mode in Power BI: the ApproximateDistinctCount DAX function, which returns an estimate of the number of the distinct values in a column and which can ...