| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| column class_name cannot be null | 0.5 | 0.3 | 5505 | 88 | 32 |
| column | 1.59 | 0.2 | 3290 | 94 | 6 |
| class_name | 1.16 | 0.2 | 3619 | 14 | 10 |
| cannot | 1.9 | 1 | 8965 | 32 | 6 |
| be | 0.98 | 0.2 | 3778 | 88 | 2 |
| null | 1.39 | 0.4 | 5541 | 2 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| column class_name cannot be null | 0.67 | 0.9 | 3700 | 25 |
| column name cannot be null | 1.16 | 0.6 | 4571 | 47 |
| column class_id cannot be null | 0.12 | 0.5 | 948 | 16 |
| column user_name cannot be null | 0.58 | 0.7 | 5110 | 64 |
| column code cannot be null | 0.51 | 0.8 | 6098 | 96 |
| column stu_name cannot be null | 1.9 | 0.3 | 3083 | 46 |
| column nickname cannot be null | 0.26 | 0.7 | 7762 | 76 |
| column type cannot be null | 0.53 | 0.4 | 76 | 97 |
| column username cannot be null | 0.14 | 0.7 | 4716 | 73 |
| column number cannot be null | 1.03 | 0.1 | 3233 | 68 |
| column created_by cannot be null | 1.29 | 0.2 | 2599 | 50 |
| column id cannot be null | 0.61 | 0.8 | 2480 | 65 |
| column login_name cannot be null | 1.69 | 0.4 | 5132 | 95 |
| column num cannot be null | 1.86 | 0.1 | 9052 | 58 |
| column create_by cannot be null | 1.13 | 0.7 | 2306 | 78 |
| column company_name cannot be null | 1.09 | 0.3 | 6893 | 77 |
| column id_number cannot be null | 0.76 | 0.5 | 5429 | 44 |
| column departmentname cannot be null | 1.89 | 0.4 | 5458 | 62 |
| name cannot be null | 1.04 | 0.7 | 1460 | 26 |
| class name is null | 0.34 | 0.1 | 8452 | 7 |
