Question

I have a table Managers. Columns: ManagerId, ManagerName.

I have a table Clients. Columns: ClientId, ManagerId, ClientName, ClientAddress, Details.

Each (every?) manager have clients in clients table.

I need a query that returns next table. Columns: Column1, Column2.

Column1: ManagerName

Column2: ClientName1 ',' ClientAddress1 ',' Details1 ';' ClientName2 ',' ClientAddress2 ',' Details2 ';' etc

In column2 just a list of clients which correspond to manager from column1.

How can I do that?

I guess I need to use COALESCE but I’m not sure.

Answer 1

Here is a working example using XML AUTO

With Managers AS
(
      Select 1 as ManagerId, 'Tom' as ManagerName
UNION Select 2 as ManagerId, 'Jane' as ManagerName
),
Clients as
(
      Select 1 as ClientId, 1 as ManagerId, 'TaXon Pro' as ClientName, '112 Acme St Cityville DD 56' as ClientAddress, 'ABC' as Details
UNION Select 2 as ClientId, 1 as ManagerId, 'Pro Xon' as ClientName, '12342 Bylo Rd Streetville DD 156' as ClientAddress, 'CDR' as Details
UNION Select 3 as ClientId, 1 as ManagerId, 'Clean Svc' as ClientName, '6512 Toni St Townville DD 1236' as ClientAddress, 'D@#$' as Details
UNION Select 4 as ClientId, 2 as ManagerId, 'ContraRel' as ClientName, '152 Acme St Villageville DD 3456' as ClientAddress, 'SER' as Details
UNION Select 5 as ClientId, 2 as ManagerId, 'RepoIn' as ClientName, '1 Acme St Districtville DD 1456' as ClientAddress, 'KH' as Details
)
SELECT 
    M.ManagerName,
    (
        SELECT c.ClientName + ', ' + C.ClientAddress + ', ' + c.Details + ';'
        FROM Clients C
        WHERE m.ManagerId = c.ManagerId
        FOR XML PATH('') 
    ) AS Clients
FROM Managers M
GROUP BY 
    m.ManagerId, M.ManagerName

The output will look like this

ManagerName Clients
----------- -------------------------------------------------------------------------------------------------------------------------------------------
Tom         TaXon Pro, 112 Acme St Cityville DD 56, ABC;Pro Xon, 12342 Bylo Rd Streetville DD 156, CDR;Clean Svc, 6512 Toni St Townville DD 1236, D@#$;
Jane        ContraRel, 152 Acme St Villageville DD 3456, SER;RepoIn, 1 Acme St Districtville DD 1456, KH;

(2 row(s) affected)