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sql how to get courses that i have made prerequisites Code Example
sql how to get courses that i have made prerequisites 
SET @courses_completed = '2';
SELECT c.course_id
FROM course c
LEFT JOIN course_prerequisites p ON p.course_id = c.course_id
WHERE NOT FIND_IN_SET(c.course_id, @courses_completed)
GROUP BY c.course_id
HAVING SUM(COALESCE(FIND_IN_SET(p.prerequisite_course_id, @courses_completed), 0) > 0) = COUNT(p.prerequisite_course_id);
Source: stackoverflow.com



Sql

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Category:
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Sub Category:
 Code Example
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