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SQL problem summary

2022-07-24 08:42:00 【zhougl996】

1.sql count How to fill in empty results 0

select a.name name,ifnull(nums,0) nums  from  (select DISTINCT name from user) a  left join
       (select name , count(*) nums from user where score < 100 group by name  )
       b on a.name = b.name  order by nums desc

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