Excel's _xlfn.PERCENTRANK.INC in T-SQL

Question

Hi all,
any idea how to mimic this function in T-SQL? We are on SQL Server 2008 R2. Thanks in advance!

Answer 1

Create Table FooTestValues (A int);
Insert FooTestValues(A) Values
(13), (12), (11), (8), (4), (3), (2), (1), (1), (1);
go
Create Function FooPERCENTRANKINC (@DesiredValue float) Returns float As
Begin
Return (Select Sum(Case When v.A < @DesiredValue Then Cast(1.0 As float) Else 0 End)
/ Sum(Case When v.A <> @DesiredValue Then Cast(1.0 As float) Else 0 End) From FooTestValues v)
End
go
Select dbo.FooPERCENTRANKINC(2);
Select dbo.FooPERCENTRANKINC(4);
Drop Function FooPERCENTRANKINC;
go
Drop Table FooTestValues;
Tom