| id,interval_col,varchar_interval_col | |
| 1,P0M,P0M | |
| 2,P1M,P1M | |
| 3,P10M,P10M | |
| 4,P200M,P200M | |
| 5,P7777M,P7777M | |
| 6,P9999M,P9999M | |
| 7,P99999M,P99999M | |
| 8,P-0M,P-0M | |
| 9,P-1M,P-1M | |
| 10,P-10M,P-10M | |
| 11,P-200M,P-200M | |
| 12,P-7777M,P-7777M | |
| 13,P-9999M,P-9999M | |
| 14,P-99999M,P-99999M | |
| 15,P+0M,P+0M | |
| 16,P+1M,P+1M | |
| 17,P+10M,P+10M | |
| 18,P+200M,P+200M | |
| 19,P+7777M,P+7777M | |
| 20,P+9999M,P+9999M | |
| 21,P+99999M,P+99999M |