SQL查询优化：筛选拥有超过8个乘客的用户
SELECT * FROM passenger\nLEFT OUTER JOIN user ON passenger.username=user.username\nGROUP BY passenger.username\nHAVING COUNT(*) > 8
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SELECT * FROM passenger\nLEFT OUTER JOIN user ON passenger.username=user.username\nGROUP BY passenger.username\nHAVING COUNT(*) > 8
原文地址: https://www.cveoy.top/t/topic/pQWr 著作权归作者所有。请勿转载和采集!