Untitled query #27171

SQL

use cswiki_p;

select course_id
      -- when courses.course_start like "2009%" then "2009"
      -- count(courses.course_start like "2010%") as "2010",
      -- count(courses.course_start like "2011%") as "2011",
      -- count(courses.course_start like "2012%") as "2012",
      -- count(courses.course_start like "2013%") as "2013",
      -- count(courses.course_start like "2014%") as "2014",
      -- count(courses.course_start like "2015%") as "2015",
      -- count(courses.course_start like "2016%") as "2016",
      -- count(courses.course_start like "2017%") as "2017",
      -- count(courses.course_start like "2018%") as "2018"
    
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 "2009%"
;
SQL

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