Dear Nitish
Thanks a lot for you help. Following is the output of the data from one of the CV. I just need to extract the distinct emp ids from this cv.. I need this data in this CV also as this will be used later for each distinct person id.
| Employee ID | Attribute | Start_date | End_date |
| 11 | 214353 | 1-Jan-16 | 31-Dec-16 |
| 11 | 243434 | 1-Jan-16 | 31-Dec-16 |
| 12 | 127474 | 1-Jan-16 | 31-Dec-16 |
| 13 | 163664 | 1-Feb-16 | 29-Feb-16 |
| 13 | 875757 | 1-Feb-16 | 31-Dec-16 |
| 14 | 292929 | 20-Jan-16 | 31-May-16 |
Regards
Rajib