多个分类同名商品查询问题

多个类别(catid)下面存在同名商品(name)，查询结果会出现约定分类以外的同名商品，帮我看下这个语句有什么问题，谢谢！

select id,catid,name from products where name in (select name from products where find_in_set(catid,'2,5') group by name having count(name)>1) order by name;

select id,catid,name from products where catid in (find_in_set(catid,'2,5')) and name in (select name from products where find_in_set(catid,'2,5') group by name having count(name)>1) order by name;

谢谢老师，外面查询忘了加这个条件了。

select id,catid,name from products where (find_in_set(catid,'2,5')) and name in (select name from products where find_in_set(catid,'2,5') group by name having count(name)>1) order by name;

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