废话少说直接开始玩一下
SELECT user_id,count(*) FROM ts_order
GROUP BY ts_order.user_id HAVING count(user_id)>1;
执行效果展示:
通过SQL查询单表中某个字段重复的数据条数


废话少说直接开始玩一下
SELECT user_id,count(*) FROM ts_order
GROUP BY ts_order.user_id HAVING count(user_id)>1;
执行效果展示: