Display streak

Question

Hi everyone,
Env : SQL Serveur 2008 R2
I want to build a standing with the "actual streak" (Winning or losing) for each team. I have created a small table with random results in it. Really similar to many sports standing.
In the table resultID : 1 = Win and 2 = Lost
CREATE TABLE [dbo].[teamResult](
[TeamID] [int] NULL,
[SeasonID] [int] NULL,
[ResultID] [int] NULL,
[dateGame] [date] NULL
) ON [PRIMARY]
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 1, CAST(0x01380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 1, CAST(0x02380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 2, CAST(0x03380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 1, CAST(0x04380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 2, CAST(0x05380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 2, CAST(0x06380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 2, 2, CAST(0x07380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (2, 1, 2, CAST(0x01380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (2, 1, 2, CAST(0x02380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (2, 1, 1, CAST(0x03380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x14380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x15380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x16380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x17380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x14380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x15380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x16380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x17380B00 AS Date))
GO
I hope that someone can help me. 
Thanks and have a great day !
Richard
(Oh, and before someone ask, no it's not for a school project ... I'm done with school since a Looooong time ... it's for a personnal use and to learn more on SQL and complex scenario)
Richard Martin Web Developer / BI Developer

Answer 1

CREATE TABLE [dbo].[teamResult](
[TeamID] [int] NULL,
[SeasonID] [int] NULL,
[ResultID] [int] NULL,
[dateGame] [date] NULL
) ON [PRIMARY]
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 1, CAST(0x01380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 1, CAST(0x02380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 2, CAST(0x03380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 1, CAST(0x04380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 2, CAST(0x05380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 1, 2, CAST(0x06380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (1, 2, 2, CAST(0x07380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (2, 1, 2, CAST(0x01380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (2, 1, 2, CAST(0x02380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (2, 1, 1, CAST(0x03380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x14380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x15380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x16380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (3, 2, 1, CAST(0x17380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x14380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x15380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x16380B00 AS Date))
GO
INSERT [dbo].[teamResult] ([TeamID], [SeasonID], [ResultID], [dateGame]) VALUES (4, 2, 2, CAST(0x17380B00 AS Date))
GO
;with mycte as
(Select *,row_number() Over(Partition by SeasonID,TeamID Order by dateGame) rn
,row_number() Over(Partition by SeasonID,TeamID,ResultID Order by dateGame) rn2,
row_number() Over(Partition by SeasonID,TeamID Order by dateGame)-
row_number() Over(Partition by SeasonID,TeamID,ResultID Order by dateGame) rn3
from [dbo].[teamResult]
,mycte1 as (
Select SeasonID,TeamID,ResultID,dateGame, rn, rn3, Case WHEN ResultID=1 Then 1 Else -1 END as PositiveOrNegative
from mycte)
Select a.SeasonID,a.TeamID,a.ResultID,a.dateGame,Sum(b.PositiveOrNegative) as [actualstreak]
from mycte1 a
left join mycte1 b on
a.SeasonID=b.SeasonID
AND a.TeamID=b.TeamID
AND a.ResultID=b.ResultID
AND a.rn3=b.rn3 AND a.rn>=b.rn
Group by a.SeasonID,a.TeamID,a.ResultID,a.dateGame
Order by SeasonID,TeamID,dateGame
drop table [dbo].[teamResult]