When working spreadsheets, cell references are vital. They permit you to directly reference specific cells, making it more convenient to perform calculations and adjust data. There are two main types of cell references: absolute and relative. Fixed cell references persist the same, even when a formula is copied to another cell. They are denoted b

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. Visualize you have a table of sales transactions. Using GROUP BY, you could calculate the total revenue f