The DVAR function in Microsoft Excel is a database function, and its purpose is to estimate the variance of a population based on a sample from selected database entries. The formula for the DVAR ...

Have you ever found yourself tangled in a web of complex Excel formulas, trying to make sense of sprawling datasets with traditional functions like SUMIFS? Many of us have been there, struggling with ...

Originally, Excel was not designed to be a real database. Its early database functions were limited in quantity and in quality. And because every record in an Excel database is visible on the screen ...

Have you ever found yourself staring at an Excel spreadsheet, trying to figure out how to make sense of all the numbers and data? Maybe you’ve spent hours manually calculating groups, splitting dates, ...

Learn how to access a MySQL database from the Web using PHP, including how to read from and write to the database and how to filter potentially troublesome input data. Previously, in our work with PHP ...

The DGET function in Excel is a Database function that extracts from a database a single record that matches the specified criteria. The formula for the DGET function is DGET (database, field, ...

Recently I encountered a problem in a stored procedure that was caused by an unexpected result from the SQL Server ISNUMERIC() function. I was using SQL Server 2008 R2 but the issue has long been ...