在mysql中in的使用情况如下:
select * from article where 列名 in(值1,值2,值3.....);
select * from article where 值1 in(值1,值2,值3.....);
在mysql中find_in_set的使用情况如下:
select * from article where find_in_set(值1, '值1,值2,值3.....');
select * from article where find_in_set(列名, '值1,值2,值3.....');
select * from article where find_in_set(值1, 列名);