sql get rows with duplicate values
/* Gets reps */
SELECT fieldA, COUNT(*)
FROM tableA
GROUP BY fieldA
HAVING COUNT(*) > 1
/* Use reps to filter results */
SELECT a.*
FROM tableA a
JOIN (
SELECT fieldA, COUNT(*) as 'count'
FROM tableA
GROUP BY fieldA
HAVING COUNT(*) > 1
) b
ON a.fieldA = b.fieldAsql check same row
// select duplicate -------------
-- users (name, email) --
// -------------------------------
SELECT
id, school_id, COUNT(*)
FROM
booster_school_languages
GROUP BY
id, school_id
HAVING
COUNT(*) > 3Copyright © 2021 Codeinu
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