Aggregating data in MySQL 8
Generally, it happens that data you want is not always available in the database. To generate data, such as getting a total count of orders or sum of price for all orders, MySQL provides many built-in aggregate functions that you can use to represent loaded data to perform calculations in MySQL statements. Data aggregation values can be sums, counting, averages, and so forth. Aggregate functions are all about fetching data from one column of a table, performing calculations on several rows, and returning the required value as an outcome.
As per the ISO standard, there are mainly the following listed aggregate functions:
- Minimum
- Maximum
- Average
- Count
- Sum
The importance of aggregate functions
For businesses, there would be several requirements at each level for each of the diversified functions to produce aggregated data to visualize. Top executives of companies would be concerned with having a holistic view of the whole organization; however, a manager would be limited...
