How to resolve the malfunctioning of the pivot function…

There is no built-in PIVOT function in MySQL. However, the same effect can be achieved using a CASE statement.

Here is an example demonstrating how to use a CASE statement to achieve the functionality of a pivot.

SELECT
    id,
    MAX(CASE WHEN category = 'A' THEN value END) AS A,
    MAX(CASE WHEN category = 'B' THEN value END) AS B,
    MAX(CASE WHEN category = 'C' THEN value END) AS C
FROM
    your_table
GROUP BY id;

In the example above, assuming you have a table named your_table with three columns: id, category, and value. You want to aggregate the data based on id, and use the values in the category column as the column names and the values in the value column as the column values.

Create columns using the CASE statement in the SELECT clause. Use the CASE statement to return the value of “value” when the category equals a specific value, otherwise return NULL. Finally, group by id using the GROUP BY clause.

Please make sure to replace “your_table” with your actual table name, and adjust column names and conditions as needed.