mysql query to dynamically convert row data to columns

Question

I am working on a pivot table query. The schema is as follows

Sno, Name, District

The same name may appear in many districts eg take the sample data for exam

Answer 1

The following assumes you want matches of distinct (name/district) pairs. I.e. Luke/CA and Duke/CA would yield two results:

SELECT name, District, count(District) AS count
FROM district_details
GROUP BY District, name

If this is not the case simply remove name from the GROUP BY clause.

Lastly, notice that I switched sum() for count() as you are trying to count all of the grouped rows rather than getting a summation of values.