Help with SQL query

I have a ContactTypes table as follows:-
ContactTypeId int PK
ContactType varchar(50)
I have several different types of contact types (i.e. Invoice,
Business, Manager, Home, etc).
I have a Client table as follows:
ClienttId int PK
ClientName varchar(50)
I have a ContactAddresses table as follows:-
ContactAddressId int PK
ClientId
ContactTypeId
Address1
Address2
Town
Postcode
Can anyone tell me how i can write an SQL query to fetch all the
different types of contacts for a client, regardless if they exist or
not?
The query should return something like for a selected Client:-
Contact Type Address1 Address2 Town PostCode
Invoice 123 somewhere there AB12 C12
Business 456 overthere here CD34 E21
Manager
Home 987 here where D21 S12
So far i have come up with the following but it requires separate SQL
statements for each column. Can anyone recommend a way around this?
SELECT ContactType
,(SELECT Address1 FROM ContactAddresses CA WHERE ClientId = @.clientId
AND CA.ContactTypeId = CT.ContactTypeId)
,(SELECT Address2 FROM ContactAddresses CA WHERE ClientId = @.clientId
AND CA.ContactTypeId = CT.ContactTypeId)
,(SELECT Town FROM ContactAddresses CA WHERE ClientId = @.clientId AND
CA.ContactTypeId = CT.ContactTypeId)
,(SELECT PostCode FROM ContactAddresses CA WHERE ClientId = @.clientId
AND CA.ContactTypeId = CT.ContactTypeId)
FROM ContactTypes CT
Thanks in advance for any suggestions.
DanI think you want a cross join to get all possible combinations of client and
contact type, and an outer join to get the addresses that exist, while still
keeping the contact type/client combinations that do not.
select c.clientname
, b.ContactType
, a.Address1
, a.Address2
, a.Town
, a.PostCode
from ContactTypeId b
cross join Client c
left outer join ContactAddresses a
on c.ClienttId = a.ClienttId
and c.ContactTypeID = b.ContactTypeID
<dan_williams@.newcross-nursing.com> wrote in message
news:1148503334.127146.20190@.i39g2000cwa.googlegroups.com...
> I have a ContactTypes table as follows:-
> ContactTypeId int PK
> ContactType varchar(50)
> I have several different types of contact types (i.e. Invoice,
> Business, Manager, Home, etc).
> I have a Client table as follows:
> ClienttId int PK
> ClientName varchar(50)
> I have a ContactAddresses table as follows:-
> ContactAddressId int PK
> ClientId
> ContactTypeId
> Address1
> Address2
> Town
> Postcode
>
> Can anyone tell me how i can write an SQL query to fetch all the
> different types of contacts for a client, regardless if they exist or
> not?
> The query should return something like for a selected Client:-
> Contact Type Address1 Address2 Town PostCode
> Invoice 123 somewhere there AB12 C12
> Business 456 overthere here CD34 E21
> Manager
> Home 987 here where D21 S12
> So far i have come up with the following but it requires separate SQL
> statements for each column. Can anyone recommend a way around this?
> SELECT ContactType
> ,(SELECT Address1 FROM ContactAddresses CA WHERE ClientId = @.clientId
> AND CA.ContactTypeId = CT.ContactTypeId)
> ,(SELECT Address2 FROM ContactAddresses CA WHERE ClientId = @.clientId
> AND CA.ContactTypeId = CT.ContactTypeId)
> ,(SELECT Town FROM ContactAddresses CA WHERE ClientId = @.clientId AND
> CA.ContactTypeId = CT.ContactTypeId)
> ,(SELECT PostCode FROM ContactAddresses CA WHERE ClientId = @.clientId
> AND CA.ContactTypeId = CT.ContactTypeId)
> FROM ContactTypes CT
> Thanks in advance for any suggestions.
> Dan
>