sql select students closest in score
SELECT
s1.student AS one_student
, s2.student AS other_student
, ABS(s1.score - s2.score) AS score_diff
FROM scores AS s1
INNER JOIN scores AS s2
ON s1.id != s2.id
AND s1.id < s2.id
ORDER BY 3 ASC, 1 ASC
LIMIT 1Copyright © 2021 Codeinu
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