Filtering Project Server Lookup Table

Hello!

I am trying to filter a specific Lookup Table value from a LookupTableDataSet via the following code.

LookupTableDataSet lookupDs = new LookupTableDataSet();

//Get all the lookup table
Filter cfFilter = new Microsoft.Office.Project.Server.Library.Filter();
// Restrict the filter to one table.
cfFilter.FilterTableName = lookupDs.LookupTableTrees.TableName;
// Add fields to the filter to limit the columns you want returned.
// Set the sort order on the name column (optional for the Field constructor).
cfFilter.Fields.Add(new Filter.Field(lookupDs.LookupTableTrees.TableName,
lookupDs.LookupTableTrees.LT_VALUE_FULLColumn.ColumnName));

Filter.FieldOperator criteria =
new Microsoft.Office.Project.Server.Library.Filter.FieldOperator
(Filter.FieldOperationType.Equal, "LT_VALUE_FULL",
new string[] { 'Consulting.Analyst' });

cfFilter.Criteria = criteria;
lookupDs = lookupTable.ReadLookupTables(cfFilter.GetXml(), false, 0);



While executing, I am getting the following error message:


declare @P0 NVarChar; set @P0 = Consulting.Analyst;

SET NOCOUNT ON

SELECT
   LT_STRUCT_UID ,
   LT_UID ,
   LCID
INTO #T0
FROM dbo.LookupTableTrees AS keys
WHERE (ISNULL(keys.LT_VALUE_FULL, '') = @P0)
CREATE CLUSTERED INDEX PK_#T0 ON #T0 (LT_STRUCT_UID)

SET NOCOUNT OFF

SELECT
   keys.LT_STRUCT_UID ,
   keys.LT_UID ,
   LT_PARENT_STRUCT_UID ,
   LT_VALUE_FULL
FROM dbo.LookupTableTrees
   INNER JOIN #T0 AS keys ON keys.LT_STRUCT_UID = LookupTableTrees.LT_STRUCT_UID


DROP TABLE #T0;

 ---> System.Data.ConstraintException: Failed to enable constraints. One or more
 rows contain values violating non-null, unique, or foreign-key constraints.
   at System.Data.DataSet.EnableConstraints()
   at System.Data.DataSet.set_EnforceConstraints(Boolean value)
   at Microsoft.Office.Project.Server.DataAccessLayer.DAL.SubDal.FillTypedDataSe
t(Boolean allowCache, DataSet typedDataSet, String[] tables, SqlCommand sqlComma
nd, Boolean enforceConstraints)
   at Microsoft.Office.Project.Server.DataAccessLayer.DAL.SubDal.FillTypedDataSe
t(DataSet typedDataSet, String[] tables, SqlCommand sqlCommand, Boolean enforceC
onstraints)
   at Microsoft.Office.Project.Server.DataAccessLayer.FilterDal.FillDataSet(Quer
yState queryState)
   --- End of inner exception stack trace ---
   at Microsoft.Office.Project.Server.DataAccessLayer.FilterDal.FillDataSet(Quer
yState queryState)
   at Microsoft.Office.Project.Server.BusinessLayer.LookupTable.ReadLookupTables
(String xmlFilter, Boolean autoCheckOut, Int32 language)
   at Microsoft.Office.Project.Server.Wcf.Implementation.LookupTableImpl.ReadLoo
kupTables(String xmlFilter, Boolean autoCheckOut, Int32 language)
============================

When I run the SQL query, I don't get any results. By changing the @P0 variable to NVARCHAR(20), the query is running fine and shows the correct result?

What could be wrong with the PSI code? How could I filter to a specific LT_Value_Full value?



Many thanks



Joerg