Full-Stack Internet Architecture
Aug 22, 2023 · Databases
Querying Students Enrolled in Both Course 1 and Course 2 with MySQL
This article explains how to retrieve the names of students who have selected both course 1 and course 2 in a MySQL table by using a GROUP BY clause together with a HAVING condition that counts distinct course IDs, avoiding incorrect results from a simple IN filter.
Database QueryGROUP BYHAVING
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