如何为列的相同值选择所有行？

Question

如何选择列中具有相同值的所有行？

SELECT * FROM messages WHERE count(mcc) > 1 // total all same of value for column mcc > 1

仅338,338,338,340,340等。不是330,316,334因为它们没有相同的值

Answer 1

您可以尝试此查询： -

SELECT * FROM messages 
WHERE mcc in (SELECT mcc FROM messages
              GROUP BY mcc
              HAVING COUNT(mcc) > 1)