我有三个字段的地址历史记录表:EmpID,Address,AddrID.
每次添加新地址时,我也会将该地址ID(AddrID)的值递增1.
EmpID | AddrID | Address
-------------------------------
1 | 1 | 1234 First Ave
1 | 2 | 2145 First Ave
1 | 3 | 1111 First Ave
2 | 1 | 1001 Second St
2 | 2 | 1002 Second St
2 | 3 | 1003 Second St
2 | 4 | 2222 Second St
3 | 1 | 3332 Third Lane
3 | 2 | 3333 Third Lane
4 …