MySql的選擇結腸

Question

表：用戶

| user_Id | my_threads   |    
| 100  | 200:1, 201:2, 217:4 | 
| 101  | 200:1, 215:3, 217:4 | 

表：螺紋

| thread_id | author_id | title      | 
| 217  | 100  | This is title thread  | 
| 200  | 101  | this is only test   | 

當用戶登錄成功{$用戶id = USER_ID，即用戶線程的節目標題？

select title 
from thread 
where FIND_IN_SET(thread.thread_id,(select my_threads from user where user_id=100)); 

這個SQL上述作品時my_threads沒有冒號這樣的200，217

Answer 1

試試這個：

取代你的結腸逗號

select title 
from thread 
where FIND_IN_SET(thread.thread_id, 
     (select replace(replace(my_threads,':',','),' ','') from user where user_id=100)) 

SQL fiddle demo