SQL ROW_NUMBER: Top Uses Explained

The ROW_NUMBER function in SQL can be used in various scenarios, such as:

1. Data pagination: You can use the ROW_NUMBER function to paginate query data. By sorting the result set and assigning a sequential number to each row, you can then perform pagination based on that number.
2. Filtering duplicated data: You can use the ROW_NUMBER function to identify and remove duplicate data rows. By sorting the data and assigning the same number to each duplicate row, you can then delete the duplicated rows based on that number.
3. Data grouping: The ROW_NUMBER function can be used to sort the data within each group. By sorting the data and assigning a number to each row within a group, the data within each group can be sorted.
4. To find the maximum/minimum value: You can use the ROW_NUMBER function to search for the maximum or minimum value in a specific column. By sorting the data and assigning a row number to each row, you can locate the row with the number 1, which is the maximum or minimum value.
5. Data ranking: You can use the ROW_NUMBER function to rank the data. By sorting the data and assigning a sequence number to each row, you can determine the ranking of each row.

In conclusion, the ROW_NUMBER function can be used in various scenarios to sort, group, paginate, and rank data.