When dealing with spreadsheets, cell references are essential. They permit you to explicitly indicate specific cells, making it more convenient to carry out calculations and adjust data. There are two main types of cell references: absolute and relative. Static cell references stay the same, even when a formula is duplicated to another cell. They

SQL's GROUP BY clause|grouping function|aggregation statement} is a powerful tool for summarizing data. It allows you to group 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 determine the total revenue for