我在表中包含如下所示的采购合同:
+------+-----------+------------+---------+------------+-----------+
| type | text | date | company | supplierID | name |
+ -----+-----------+------------+---------+------------+-----------+
| 0 | None | 2004-03-29 | 310 | 227234 | HRC INFRA |
| 0 | None | 2007-09-30 | 310 | 227234 | HRC INFRA |
| 0 | None | 2010-11-29 | 310 | 227234 | HRC INFRA |
| 2 | Strategic | 2011-01-01 | 310 | 227234 | HRC INFRA |
| 0 | None | 2012-04-10 | …