When dealing with spreadsheets, cell references are essential. They permit you to explicitly reference specific cells, making it simpler to execute calculations and manipulate data. There are two main types of cell references: absolute and relative. Absolute cell references stay the same, even when a formula is copied to another cell. They are de

SQL's GROUP BY clause|grouping function|aggregation statement} is a powerful tool for summarizing data. It allows you to combine rows with the same value in one or more columns into a single row, making it easier to analyze trends and patterns. Imagine you have a table of sales transactions. Using GROUP BY, you could find the total revenue for each