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1abdelhalim / SQL-50 Public

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SQL-50

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2356-Number-of-Unique-Subjects-Taught-by-Each-Teacher.sql

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SQL-50

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2356-Number-of-Unique-Subjects-Taught-by-Each-Teacher.sql

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4 lines (4 loc) · 121 Bytes

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# Write your MySQL query statement below

select teacher_id, count(distinct(subject_id)) as cnt

from Teacher

group by 1

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