Can you do a For Each Row loop using MySQL?

Question

My question is related to the answer found in this post by user Consultuning on Oct 22 \'09 at 18:31: mysql query to dynamically convert row data to columns

Answer 1

In the link you provided, thats not a loop in sql...

thats a loop in programming language

they are first getting list of all distinct districts, and then for each district executing query again.