Problem: `select...from tablets()` are invalidated when there exists predicates, such as:
```sql
// The all data is:
mysql> select * from student3;
+------+------+------+
| id | name | age |
+------+------+------+
| 1 | ftw | 18 |
| 3 | yy | 19 |
| 4 | xx | 21 |
| 2 | cyx | 20 |
+------+------+------+
// when we specified tablet to read:
mysql> select * from student3 tablet(131131);
+------+------+------+
| id | name | age |
+------+------+------+
| 1 | ftw | 18 |
| 3 | yy | 19 |
+------+------+------+
// Howerver, when there exists predicates, the `tablet(131131)` is invalidated
mysql> select * from student3 tablet(131131) where id > 1;
+------+------+------+
| id | name | age |
+------+------+------+
| 4 | xx | 21 |
| 3 | yy | 19 |
| 2 | cyx | 20 |
+------+------+------+
```
After the fix, we get promising data
```sql
mysql> select * from student3 tablet(131131) where id > 1;
+------+------+------+
| id | name | age |
+------+------+------+
| 3 | yy | 19 |
+------+------+------+
```
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