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| id | id1 | id2 | field1 | field2 | field3 | field4 |
|---|---|---|---|---|---|---|
| 1 | null | null | asdfgh | asdfgh | asdfgh | null |
| 2 | null | null | asdfgh | asdfgh | asdfgh | null |
| 3 | null | null | asdfgh | asdfgh | asdfgh | null |
| null | 1 | 1 | asdfgh | null | asdfgh | asdfgh |
| null | 2 | 2 | asdfgh | null | asdfgh | asdfgh |
| null | 3 | 3 | asdfgh | null | asdfgh | asdfgh |