patient  | procedure | stay |        date         | physician | assistingnurse
-----------+-----------+------+---------------------+-----------+----------------
 100000001 |         6 | 3215 | 2008-05-02 00:00:00 |         3 |            101
 100000001 |         2 | 3215 | 2008-05-03 00:00:00 |         7 |            101
 100000004 |         1 | 3217 | 2008-05-07 00:00:00 |         3 |            102
 100000004 |         5 | 3217 | 2008-05-09 00:00:00 |         6 |
 100000001 |         7 | 3217 | 2008-05-10 00:00:00 |         7 |            101
 100000004 |         4 | 3217 | 2008-05-13 00:00:00 |         3 |            103