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Author

Topic

mike1973
Starting Member

46 Posts

Posted - 2011-10-10 : 17:55:48

Hello guys,

I have a table called Doctor(DoctorID,Name), Titles (TitleID,Title) and a Doctor_Titles(DoctorID,TitleID)

I'm not sure how to get the following result:

I need for a selected doctor all titles in the titles table and another column (True or false) if assigned to the selected doctor or no

Thanks a lot for your help

jimf
Master Smack Fu Yak Hacker

2875 Posts

Posted - 2011-10-10 : 18:38:59

select d.DoctorID,d.Name ,isnull(t.title,'Not Assigned')
from
doctor d inner join doctor_titles dt on d.doctorid = dt.doctor_id
left join titles t on t.titleid = dt.titleid

Jim

Everyday I learn something that somebody else already knew

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-10-11 : 01:02:12

[code]

DECLARE @DoctorID int
SET @DoctorID= <set your required doctor id here>

select m.Name,m.Title,
CASE WHEN dt.DoctorID IS NULL THEN 'False' ELSE 'True' END AS Assigned
from
(
select d.Name,t.TitleID,t.Title
from Doctor d
cross join Titles t
where d.DoctorID=@DoctorID
)m
left join Doctor_Titles dt
on dt.DoctorID = m.DoctorID
AND dt.TitleID = m.TitleID
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

mike1973
Starting Member

46 Posts

Posted - 2011-10-11 : 02:34:11

Dear Visakh,

Thanks for your help, when i tried to execute the query i receive an error at this line
"on dt.DoctorID = m.DoctorID"

not sure why even it looks good, Invalid column name 'DoctorID'.

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-10-11 : 02:57:03

oops i missed that column in derived table


DECLARE @DoctorID int
SET @DoctorID= <set your required doctor id here>

select m.Name,m.Title,
CASE WHEN dt.DoctorID IS NULL THEN 'False' ELSE 'True' END AS Assigned
from
(
select d.DoctorID,d.Name,t.TitleID,t.Title
from Doctor d
cross join Titles t
where d.DoctorID=@DoctorID
)m
left join Doctor_Titles dt
on dt.DoctorID = m.DoctorID
AND dt.TitleID = m.TitleID

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

mike1973
Starting Member

46 Posts

Posted - 2011-10-11 : 03:01:54

Thanks so much, perfect.

I appreciate your help.

Mike

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-10-11 : 03:51:51

welcome

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

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