我正在尝试执行一些SQL，但是出现以下错误

    Msg 451, Level 16, State 1, Line 1
Cannot resolve collation conflict for column 4 in SELECT statement.

但是似乎无法弄清楚问题出在哪里？？？任何帮助将不胜感激。

SELECT     MEMBTYPEID.text AS MemberType, MEMBLST.nodeId, MEMBTYPES.Name AS MemberField, 
                      ISNULL(CASE WHEN MEMBTYPES.datatypeID IN
                          (SELECT     NodeId
                            FROM          DBO.CMSDATATYPE
                            WHERE      DBTYPE = 'Nvarchar') THEN MEMBDATA.[dataNvarchar] WHEN MEMBTYPES.datatypeID IN
                          (SELECT     NodeId
                            FROM          DBO.CMSDATATYPE
                            WHERE      DBTYPE = 'Ntext') THEN MEMBDATA.[dataNtext] WHEN MEMBTYPES.datatypeID IN
                          (SELECT     NodeId
                            FROM          DBO.CMSDATATYPE
                            WHERE      DBTYPE = 'Date') THEN CONVERT(NVARCHAR, MEMBDATA.[dataDate]) WHEN MEMBTYPES.datatypeID IN
                          (SELECT     NodeId
                            FROM          DBO.CMSDATATYPE
                            WHERE      DBTYPE = 'Integer') THEN CASE WHEN
                          (SELECT     value
                            FROM          [dbo].[cmsDataTypePreValues]
                            WHERE      datatypenodeid = MEMBTYPES.[dataTypeId] AND id = CONVERT(INT, MEMBDATA.[dataInt])) IS NOT NULL THEN
                          (SELECT     value
                            FROM          [dbo].[cmsDataTypePreValues]
                            WHERE      datatypenodeid = MEMBTYPES.[dataTypeId] AND id = CONVERT(INT, MEMBDATA.[dataInt])) ELSE CONVERT(NVARCHAR, 
                      MEMBDATA.[dataInt]) END ELSE NULL END, '') AS MemberData
FROM         (SELECT     id, text
                       FROM          dbo.umbracoNode
                       WHERE      (nodeObjectType = '9b5416fb-e72f-45a9-a07b-5a9a2709ce43')) AS MEMBTYPEID LEFT OUTER JOIN
                          (SELECT     nodeId, contentType
                            FROM          dbo.cmsContent) AS MEMBLST ON MEMBLST.contentType = MEMBTYPEID.id LEFT OUTER JOIN
                      dbo.cmsPropertyType AS MEMBTYPES ON MEMBTYPES.contentTypeId = MEMBLST.contentType LEFT OUTER JOIN
                      dbo.cmsPropertyData AS MEMBDATA ON MEMBDATA.contentNodeId = MEMBLST.nodeId AND 
                      MEMBDATA.propertytypeid = MEMBTYPES.id LEFT OUTER JOIN
                      dbo.cmsMember AS MEMB ON MEMB.nodeId = MEMBLST.nodeId
WHERE     (MEMBLST.nodeId IS NOT NULL)

我的SQL技能是相当基本的，因此希望有人可以提供帮助

~~~工作代码~~~

设法使其正常工作，这是代码

SELECT MEMBTYPEID.text AS MemberType, MEMBLST.nodeId, MEMBTYPES.Name AS MemberField, MEMBTYPES.Alias AS MemberFieldAlias, MEMB.LoginName,
ISNULL(CASE 
WHEN MEMBTYPES.datatypeID IN (SELECT NodeId FROM DBO.CMSDATATYPE WHERE DBTYPE = 'Nvarchar') THEN MEMBDATA.[dataNvarchar] 
WHEN MEMBTYPES.datatypeID IN (SELECT NodeId FROM DBO.CMSDATATYPE WHERE DBTYPE = 'Ntext') THEN MEMBDATA.[dataNtext] 
WHEN MEMBTYPES.datatypeID IN (SELECT NodeId FROM DBO.CMSDATATYPE WHERE DBTYPE = 'Date') THEN CONVERT(NVARCHAR, MEMBDATA.[dataDate]) 
WHEN MEMBTYPES.datatypeID IN (SELECT NodeId FROM DBO.CMSDATATYPE WHERE DBTYPE = 'Integer') THEN  CONVERT(NVARCHAR, MEMBDATA.[dataInt])
ELSE NULL END, NULL) 
AS MemberData 
FROM 
(SELECT id, text FROM dbo.umbracoNode WHERE (nodeObjectType = '9b5416fb-e72f-45a9-a07b-5a9a2709ce43')) AS MEMBTYPEID 
LEFT OUTER JOIN (SELECT nodeId, contentType FROM dbo.cmsContent) AS MEMBLST ON MEMBLST.contentType = MEMBTYPEID.id 
LEFT OUTER JOIN dbo.cmsPropertyType AS MEMBTYPES ON MEMBTYPES.contentTypeId = MEMBLST.contentType 
LEFT OUTER JOIN dbo.cmsPropertyData AS MEMBDATA ON MEMBDATA.contentNodeId = MEMBLST.nodeId AND MEMBDATA.propertytypeid = MEMBTYPES.id 
LEFT OUTER JOIN dbo.cmsMember AS MEMB ON MEMB.nodeId = MEMBLST.nodeId
WHERE (MEMBLST.nodeId IS NOT NULL)