MySQL中的Countif

Posted 2021-02-25

SELECT
  id,
  sum(if (`user_type` = 1, 1, 0)) as COUNT_TYPE1,
  sum(if (`user_type` = 2, 1, 0)) as COUNT_TYPE2,
  sum(if (`user_type` = 3, 1, 0)) as COUNT_TYPE3,
  sum(if (`user_type` = 4, 1, 0)) as COUNT_TYPE4
FROM users
GROUP BY id