find duplicate keys in mysql
SELECT col, COUNT(col) FROM table_name GROUP BY col HAVING COUNT(col) > 1;find duplicate keys in mysql
SELECT col, COUNT(col) FROM table_name GROUP BY col HAVING COUNT(col) > 1;select where duplicate mysql
SELECT
col1, COUNT(col1),
col2, COUNT(col2)
FROM
table_name
GROUP BY
col1,
col2
HAVING
(COUNT(col1) > 1) AND
(COUNT(col2) > 1);Copyright © 2021 Codeinu
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