SQL query problem - sql-server

Question

I'm new to StackOverflow, and new to SQL Server, I'd like you to help me with some troublesome query.
This is my database structure(It's half spanish, hope doesn't matter)
Database
My problem is that I don't now how to make a query that states which team is local and which is visitor(using table TMatch, knowing that the stadium belongs to only one team)
This is as far as I can get
Select P.NroMatch, (select * from fnTeam (P.TeamA)) as TeamA,(select * from fnTeam (P.TeamB)) as TeamB,
(select * from fnEstadium (P.CodEstadium)) as Estadium, (cast(P.GolesTeamA as varchar)) + '-' + (cast(P.GolesTeamA as varchar)) as Score,
P.Fecha
from TMatch P
Using this functions:
If object_id ('fnTeam','fn')is not null
drop function fnTeam
go
create function fnTeam(#CodTeam varchar(5))
returns table
return(Select Name from TTeam where CodTeam = #CodTeam)
go
select * from fnTeam ('Eq001')
go
----****
If object_id ('fnEstadium','fn')is not null
drop function fnEstadium
go
create function fnEstadium(#CodEstadium varchar(5))
returns table
return(Select Name from TEstadium where CodEstadium = #CodEstadium)
go
I hope I'd explained myself well, and I thank you help in advance
EDIT:
Thanks for the help, this is what I've been looking for
Select P.NroMatch,
CASE
WHEN Ts.CodTeam= Ta.CodTeamTHEN Ta.Name
ELSE Tb.Name
END
As TeamLocal,
CASE
WHEN Ts.CodTeam<> Ta.CodTeamTHEN Ta.Name
ELSE Tb.Name
END
As TeamVisitante,
Ts.Name as Estadium,
(cast(P.GolesTeamA as varchar)) + '-' + (cast(P.GolesTeamB as varchar)) as Score,
P.Fecha
from
TMatch P
join TTeamTa ON Ta.CodTeam= P.TeamA
join TTeamTb ON Tb.CodTeam= P.TeamB
join TEstadium Ts ON Ts.CodEstadium = P.CodEstadium

Answer 1

You do not need to use 'lookup' functions for this (and shouldn't), joins are a better approach:
Select
P.NroMatch,
Ta.Name as TeamA,
Tb.Name as TeamB,
Ts.Name as Estadium,
cast(P.GolesTeamA as varchar)) + '-' + (cast(P.GolesTeamA as varchar) as Score,
P.Fecha,
CASE
WHEN Ts.CodTeam = Ta.Name THEN Ta.Name
ELSE Tb.Name
END As HomeTeam,
CASE
WHEN Ts.CodTeam <> Ta.Name THEN Ta.Name
ELSE Tb.Name
END As VistorTeam
from
TMatch P
join TTeam Ta ON Ta.CodTeam = P.TeamA
join TTeam Tb ON Tb.CodTeam = P.TeamB
join TEstadium Ts ON Ts.CodEstadium = P.CodEstadium
If you are new to SQL, it might be useful searching SO for some resources such as these:
SQL Tutorial
SQL Tutorial