table1
字段名
user_Arr id
值
12,34,56,66 1
34,56 2
table2
字段名
user_Id
值
12
34
56
select user_id from table2 where user_id in (select user_arr from table1 where id =1)
希望达到这种效果,该处理table1的字段值?
select user_id from table2 where user_id in ('12,34,56,66')