| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| column id does not allow dbnull.value | 0.52 | 0.4 | 4352 | 53 | 37 |
| column | 1.47 | 0.8 | 2848 | 41 | 6 |
| id | 1.71 | 0.6 | 7792 | 57 | 2 |
| does | 0.88 | 0.6 | 3517 | 57 | 4 |
| not | 1.5 | 0.8 | 8624 | 85 | 3 |
| allow | 0.19 | 0.6 | 6363 | 47 | 5 |
| dbnull.value | 1.53 | 0.4 | 4211 | 50 | 12 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| column id does not allow dbnull.value | 0.93 | 0.7 | 7663 | 88 |
| column does not allow dbnull.value | 1.19 | 0.4 | 5093 | 88 |
| does not allow dbnull.value | 0.93 | 0.2 | 6609 | 64 |
| column id does not allow nulls | 0.64 | 0.4 | 110 | 54 |
| null not allowed for column id | 1.45 | 1 | 8451 | 100 |
| column user_id cannot be null | 1.6 | 0.5 | 6507 | 93 |
| column id_number cannot be null | 0.99 | 0.1 | 8184 | 40 |
| column dept_id cannot be null | 1.91 | 0.1 | 301 | 41 |
| column id cannot be null query | 1.52 | 0.5 | 6115 | 77 |
| column admin_id cannot be null | 1.55 | 0.8 | 1340 | 56 |
| column id contains null values | 0.4 | 0.5 | 2293 | 77 |
| column create_user_id cannot be null | 1.18 | 0.2 | 1398 | 37 |
| column class_id cannot be null | 1.81 | 0.2 | 1295 | 30 |
| column id_card cannot be null | 1.23 | 0.6 | 9534 | 40 |
| null not allowed for column | 1.59 | 0.9 | 498 | 42 |
| null value in column id | 1.82 | 0.3 | 7162 | 22 |
| column st_id cannot be null | 1.62 | 0.8 | 8790 | 39 |
| column userid cannot be null | 0.09 | 0.2 | 6157 | 76 |
| column user cannot be null | 1.24 | 0.8 | 3034 | 65 |
| column student_id cannot be null | 0.3 | 0.9 | 8892 | 84 |
| column fd_id cannot be null | 1.37 | 0.3 | 2243 | 61 |
