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Databases

ALBERT QERIMI
ALBERT QERIMI
49,872 Points
Posted by ALBERT QERIMI
ALBERT QERIMI
49,872 Points

Which teachers teach a class during all 7 periods?

SELECT * FROM TEACHERS JOIN CLASSES ON TEACHERS.ID = CLASSES.TEACHER_ID WHERE PERIOD_ID = '7'

WHY Ben did that complexed query ?

SQL Reporting by Example DAY 3 Video 1