mysql> select * from tbl_cnt;
+ ------+------+
 
| c_id | u_id |
+ ------+------+
 
|     1  |     1  |
|     2  |     1  |
|     3  |     1  |
|     4  |     1  |
|     5  |     2  |
|     6  |     2  |
|     7  |     1  |
|     8  |     1  |
|     9  |     1  |
|    10  |     3  |
|    11  |     3  |
|    12  |     4  |
|    13  |     4  |
|    14  |     4  |
+ ------+------+
 
 14  rows in set ( 0 . 06  sec)

mysql> select * from tbl_cnt where u_id like '%1%';
+ ------+------+
 
| c_id | u_id |
+ ------+------+
 
|     1  |     1  |
|     2  |     1  |
|     3  |     1  |
|     4  |     1  |
|     7  |     1  |
|     8  |     1  |
|     9  |     1  |
+ ------+------+
 
 7  rows in set ( 0 . 02  sec)