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| id | a | b | id | a | b | bc_t | bc_s |
|---|---|---|---|---|---|---|---|
| 2 | null | null | 2 | null | null | -2147483640 | -2147483640 |
| id | a | b | id | a | b | bc_t | bc_s |
|---|---|---|---|---|---|---|---|
| 1 | null | 100 | 1 | 100 | null | 100 | 100 |
| 2 | null | null | 2 | null | null | 2147483647 | 2147483647 |