Table log
--------------------------
id | timestamp
--------------------------
1  | 100000000
2  | 100000300
3  | 100000600

Table data
--------------------------
id | timestamp | data
--------------------------
1  | 100000000 | test1
2  | 100000000 | test2
3  | 100000300 | test3
4  | 100000300 | test3
5  | 100000600 | test5