| id,interval_col,varchar_interval_col | |
| 1,P0Y,P0Y | |
| 2,P1Y,P1Y | |
| 3,P10Y,P10Y | |
| 4,P200Y,P200Y | |
| 5,P7777Y,P7777Y | |
| 6,P9999Y,P9999Y | |
| 7,P99999Y,P99999Y | |
| 8,P-0Y,P-0Y | |
| 9,P-1Y,P-1Y | |
| 10,P-10Y,P-10Y | |
| 11,P-200Y,P-200Y | |
| 12,P-7777Y,P-7777Y | |
| 13,P-9999Y,P-9999Y | |
| 14,P-99999Y,P-99999Y | |
| 15,P+0Y,P+0Y | |
| 16,P+1Y,P+1Y | |
| 17,P+10Y,P+10Y | |
| 18,P+200Y,P+200Y | |
| 19,P+7777Y,P+7777Y | |
| 20,P+9999Y,P+9999Y | |
| 21,P+99999Y,P+99999Y |