What are the functions of the pivot function in MySQL?
Although there is no built-in PIVOT function in MySQL, similar functionality can be achieved by using conditional aggregate functions and CASE statements. These functions can transform rows into columns and perform aggregation operations.
By using conditional aggregate functions and CASE statements, the following functionality can be achieved:
- Convert rows to columns: Transform rows with the same identifier into a single column, such as converting sales figures from different years into separate columns.
- Aggregate operation: performing aggregation functions on transformed columns, such as summing or counting sales figures for each identifier.
- Dynamic column names: CASE statement can be used to dynamically set the names of transformed columns, for example, setting different column names based on different conditions.
- Multiple conversion conditions: You can utilize multiple CASE statements to achieve various conversion conditions, such as transforming the same field into multiple columns based on different criteria.
In conclusion, using conditional aggregation functions and CASE statements can achieve the functionality of transforming rows into columns and performing aggregation operations, similar to the PIVOT function.