finding unique updation in each employee record in tracking history

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Hello friends,
I have an table named Courier_Tracking that track all updation of courier table

Courier_Tracking table structure

Courierid UpdationDate Status
1 2014-07-25 15:58:37.813 Delivered
1 2014-07-25 12:58:37.813 In Process
2 2014-07-25 15:58:37.813 Delivered
2 2014-07-25 12:58:37.813 In Process
3 2014-07-25 15:58:37.813 Delivered
3 2014-07-25 12:58:37.813 In Process
4 2014-07-24 15:58:37.813 Delivered
4 2014-07-24 12:58:37.813 In Process
5 2014-07-24 15:58:37.813 Delivered
6 2014-07-24 12:58:37.813 In Process

Now i want to show only final changes(most recent one) from this on daily basis for every courierid like this

Courierid UpdationDate Status
1 2014-07-25 15:58:37.813 Delivered
2 2014-07-25 15:58:37.813 Delivered
3 2014-07-25 15:58:37.813 Delivered
4 2014-07-24 15:58:37.813 Delivered
5 2014-07-24 15:58:37.813 Delivered

I have no idea how to do it .
Please help me.Thanks in advance guys.

Posted 25-Jul-14 2:10am

pawanvats

Updated 25-Jul-14 2:11am

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CHill60 · Answer 1 · 2014-07-25T03:23:00

The constructs you need are GROUP BY[^]
which means you can then use the MAX[^] function

Hint: If you were to add some additional data for one of the couriers e.g.

insert into Courier_tracking values( 1, '2014-07-26 12:18:37.813', 'In Process')

you can check for the requirement you mentioned "daily basis" if you look up CAST[^]E.g.

CAST(UpdationDate as date)

will help you get daily results such as

1 2014-07-25 July, 25 2014 15:58:37+0000 
1 2014-07-26 July, 26 2014 12:18:37+0000

I'm not going to give you much more as this looks like homework. Have a go and come back if you get into difficulty