Request_number  Creation_date   Approval_date   Approval_id    Status
1                22/03/2016      24/03/2016         22        completed
1                22/03/2016      27/03/2016         23        completed
1                22/03/2016      28/03/2016         24        completed
1                22/03/2016      29/03/2016         25        completed
2                23/03/2016      25/03/2016         22        completed
2                23/03/2016      26/03/2016         23        completed
2                23/03/2016      27/03/2016         24        completed
2                23/03/2016      28/03/2016         25        completed

approval_ id    approval_name
22                 IT
23                UAT
24                REG
25                PROD

Request number  Creation date   IT_Approval_date    UAT_Approval_date   REG_Approval_date   Prod_Approval_date  Status