Untitled query #27171

This query is marked as a draft This query has been published by Hubaceksarka.

SQL

use cswiki_p;

select count(distinct course_id) as courses_2017

from ep_users_per_course as users_per_course

join ep_courses as courses on users_per_course.upc_course_id=courses.course_id

where courses.course_start like "2017%"
;

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SQL

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