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Liam-Wirth / leetcode-solutions Public

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leetcode-solutions
sql

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number_of_unique_subjects_taught_by_each_teacher_2356.sql

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4 lines (4 loc) · 130 Bytes

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leetcode-solutions
sql

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number_of_unique_subjects_taught_by_each_teacher_2356.sql

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4 lines (4 loc) · 130 Bytes

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# Write your MySQL query statement below

Select teacher_id ,

count(distinct subject_id ) as cnt from Teacher

group by teacher_id

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