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distinct wth ntext not working

Posted on 2008-10-17
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Last Modified: 2012-05-05
hi
how can i get this working
e.Responsibilitiesud field is ntext and is causing this error ...

"Msg 421, Level 16, State 1, Line 1
The ntext data type cannot be selected as DISTINCT because it is not comparable."
SELECT  DISTINCT
 
        EmployeeID      =       e.EmployeeID,
        Status          =       es.EmployeeStatus,
		Start_Date		=		e.EmployeeStartDate,
		Emp_Name        =       e.Surname + ', ' + e.KnownAs,
        LoginID         =       e.WindowsUserName,
        UserID          =       e.DisplayEmployeeID,
        Extension       =       e.ExtNoUD,
        FFWMobile       =       e.FFWMobileUD,
        Email           =       e.WorkEmail,
        ProfitCentre    =       ch.HierarchyLevel3,
        Department      =       ch.HierarchyLevel4,
        EliteNumber     =       ejwrks.Elitenumberud,
		Secretary       =       sec.EmployeeDescNoID,
        Location        =       e.LocationUD,
        Position        =       ej1.PostID,
		WorksFor1		=		EWF1.EmployeeDescNoID,
		WorksFor2		=		EWF2.EmployeeDescNoID,
		WorksFor3		=		EWF3.EmployeeDescNoID,
		WorksFor4		=		EWF4.EmployeeDescNoID,
		WorksFor5		=		EWF5.EmployeeDescNoID,
        WorksFor        =       EBoss.EmployeeDescNoID,
		AboutMe			=		e.AboutMeud,
		Responsibilites	=		e.Responsibilitiesud
 
FROM    [Cascade].dbo.Employee          e
 
JOIN    [Cascade].dbo.Employee_Status   es  
ON      e.EmployeeID            =       es.EmployeeID
 
LEFT OUTER JOIN 
        (
                select  t1.JobTitle, t1.EmployeeID, t1.PostID
                from    [Cascade].dbo.EmployeeJobs      t1
                join    (
                                select  employeeId, min(Sequence) as sequence
                                from    [Cascade].dbo.EmployeeJobs
                                group by employeeID
                        )                               t2 
                on      t1.employeeid   =       t2.employeeID   
                and     t1.Sequence     =       t2.Sequence
        )                               ej1  
ON				e.EmployeeID            =       ej1.EmployeeID
LEFT OUTER JOIN 
		[Cascade].dbo.Employee sec
ON      sec.EmployeeID          =       e.SecretaryNameUD 
 
JOIN    [Cascade].dbo.EmployeeJobs      ejwrks
ON      e.employeeid            =       ejwrks.employeeid
 
JOIN
        [Cascade].dbo.CompanyHierarchy   ch
ON      ejwrks.HierarchyNodeUD  =       ch.HierarchyNode
 
JOIN 
		[Cascade].dbo.Employee eBoss
ON		EBoss.EmployeeID		=		ejwrks.WorksForEmployeeID
 
LEFT OUTER JOIN
		[Cascade].dbo.Employee EWF1
ON		EWF1.EmployeeID			=		e.Manager1ud
 
LEFT OUTER JOIN
		[Cascade].dbo.Employee EWF2
ON		EWF2.EmployeeID			=		e.Manager2ud
 
LEFT OUTER JOIN
		[Cascade].dbo.Employee EWF3
ON		EWF3.EmployeeID			=		e.Manager3ud
 
LEFT OUTER JOIN
		[Cascade].dbo.Employee EWF4
ON		EWF4.EmployeeID			=		e.Manager4ud
 
LEFT OUTER JOIN
		[Cascade].dbo.Employee EWF5
ON		EWF5.EmployeeID			=		e.Manager5ud
 
WHERE   es.EmployeeStatus       =       'Current'  
AND		ch.[InUse?]				=		'Live'

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Question by:mooriginal
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11 Comments
 
LVL 6

Expert Comment

by:mirzas
ID: 22739535
This is by design.
0
 

Author Comment

by:mooriginal
ID: 22739585
how do i get around it ?
0
 
LVL 6

Expert Comment

by:mirzas
ID: 22739594
Use a different data type.

nvarchar should do the trick
0
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LVL 6

Accepted Solution

by:
Ashok Kumar earned 1050 total points
ID: 22739965
perhaps you can try to convert it to a different datatype in the select statement
 like Responsibilites      = convert(varchar(4000),e.Responsibilitiesud)
0
 

Author Comment

by:mooriginal
ID: 22757657
thought that would work but still getting the error message
0
 
LVL 6

Expert Comment

by:mirzas
ID: 22757683
Show the query you executed
0
 

Author Comment

by:mooriginal
ID: 22757883
ive tried this

select distinct(cast(Responsibilitiesud as varchar(50))) from employee
and it shows results so then tried

Responsibilites =       cast(e.Responsibilitiesud as varchar(50))

in the view below and still same error message
SELECT  DISTINCT
 
        EmployeeID      =       e.EmployeeID,
        Status          =       es.EmployeeStatus,
        Start_Date      =       e.EmployeeStartDate,
        Emp_Name        =       e.Surname + ', ' + e.KnownAs,
        LoginID         =       e.WindowsUserName,
        UserID          =       e.DisplayEmployeeID,
        Extension       =       e.ExtNoUD,
        FFWMobile       =       e.FFWMobileUD,
        Email           =       e.WorkEmail,
        ProfitCentre    =       ch.HierarchyLevel3,
        Department      =       ch.HierarchyLevel4,
        EliteNumber     =       ejwrks.Elitenumberud,
        Secretary       =       sec.EmployeeDescNoID,
        Location        =       e.LocationUD,
        Position        =       ej1.PostID,
        WorksFor1       =       EWF1.EmployeeDescNoID,
        WorksFor2       =       EWF2.EmployeeDescNoID,
        WorksFor3       =       EWF3.EmployeeDescNoID,
        WorksFor4       =       EWF4.EmployeeDescNoID,
        WorksFor5       =       EWF5.EmployeeDescNoID,
        WorksFor        =       EBoss.EmployeeDescNoID,
        AboutMe         =       e.AboutMeud,
        Responsibilites =       cast(e.Responsibilitiesud as varchar(50))
--Responsibilites = convert(varchar(4000),e.Responsibilitiesud)
 
 
 
FROM    [Cascade].dbo.Employee          e
 
JOIN    [Cascade].dbo.Employee_Status   es  
ON      e.EmployeeID    =       es.EmployeeID
 
LEFT OUTER JOIN 
        (
                select  t1.JobTitle, t1.EmployeeID, t1.PostID
                from    [Cascade].dbo.EmployeeJobs      t1
                join    (
                                select  employeeId, min(Sequence) as sequence
                                from    [Cascade].dbo.EmployeeJobs
                                group by employeeID
                        )                               t2 
                on      t1.employeeid   =       t2.employeeID   
                and     t1.Sequence     =       t2.Sequence
        )                               ej1  
ON                      e.EmployeeID            =       ej1.EmployeeID
LEFT OUTER JOIN 
        [Cascade].dbo.Employee sec
ON      sec.EmployeeID  =       e.SecretaryNameUD 
 
JOIN    [Cascade].dbo.EmployeeJobs      ejwrks
ON      e.employeeid    =       ejwrks.employeeid
 
JOIN
        [Cascade].dbo.CompanyHierarchy   ch
ON      ejwrks.HierarchyNodeUD  =   ch.HierarchyNode
 
JOIN 
        [Cascade].dbo.Employee eBoss
ON      EBoss.EmployeeID =               ejwrks.WorksForEmployeeID
 
LEFT OUTER JOIN
        [Cascade].dbo.Employee EWF1
ON      EWF1.EmployeeID  =               e.Manager1ud
 
LEFT OUTER JOIN
                [Cascade].dbo.Employee EWF2
ON              EWF2.EmployeeID                 =               e.Manager2ud
 
LEFT OUTER JOIN
                [Cascade].dbo.Employee EWF3
ON              EWF3.EmployeeID                 =               e.Manager3ud
 
LEFT OUTER JOIN
                [Cascade].dbo.Employee EWF4
ON              EWF4.EmployeeID                 =               e.Manager4ud
 
LEFT OUTER JOIN
                [Cascade].dbo.Employee EWF5
ON              EWF5.EmployeeID                 =               e.Manager5ud
 
WHERE   es.EmployeeStatus						=       'Current'  
AND     ch.[InUse?]								=		'Live'

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0
 

Author Comment

by:mooriginal
ID: 22757898
and as you can see from sql above - also tried
Responsibilites      = convert(varchar(4000),e.Responsibilitiesud)

and same error message
0
 

Author Comment

by:mooriginal
ID: 22757999
The ntext data type cannot be selected as DISTINCT because it is not comparable.
0
 
LVL 6

Assisted Solution

by:mirzas
mirzas earned 450 total points
ID: 22758178
Can you show the table definition that shows column data types?

There must be another column that is ntext
0
 

Author Comment

by:mooriginal
ID: 22758539
yup you were right i was missing one ...
0

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