Looking to Gathering Completed Hour Updates.

I am looking for the SQL that will allow me to query the updates to a work item and group them by:

• Work Id
• User Id
• Date

Example Task Id 12 and User Id 15:

• 9/7/2015 Completed Hours old: 5 new :7
• 9/8/2015 Completed Hours old: 7 new :8
• 9/9/2015 Completed Hours old: 8 new :12
• 9/10/2015 Completed Hours old: 12 new :15
• 9/11/2015 Completed Hours old: 15 new :20

I want the SQL so i can create a Query/Chart that users can put on their home page as a visual reminder to update their tasks.

Any help would be much appreciated.