Something like rank() in SQL Server

Question

How can I write a query in SQL Server such as rank() but a bit different calculate.

For example rank is:

rankNumber uniqeId
1             160 
2             159
3             158
4             157
5             156
5             156
7             152
8             151
8             151
10            150

I need the result like these:

rankNumber uniqeId
1           160
2           159
3           158
4           157
5           156
5           156
6           152
7           151
7           151
8           150

How can I do this? Is there such a function in SQL Server?

Answer 1

To expand on the DENSE_RANK comment, the full query is short and sweet:

SELECT
  DENSE_RANK() OVER (ORDER BY uniqueId DESC) AS rankNumber,
  uniqueId
FROM myTable
ORDER BY rankNumber

There's a SQL Fiddle here

Answer 2

SELECT DENSE_RANK() OVER (ORDER BY TotCnt DESC) AS TopCustomers, CustomerID, TotCnt

FROM (SELECT CustomerID, COUNT(*) AS TotCnt

FROM Orders Group BY CustomerID) AS Cust

OUTPUT