SQL server Nvarchar parameters - sql

Question

I Have created an SP to search against many tables in the db based on string sent form ado
the Vb code
Shared ReadOnly Property Connection() As String
Get
Return ConfigurationManager.ConnectionStrings("ConnString").ConnectionString
End Get
End Property
Function GetData(ByVal SearchKey As String) As DataTable
Dim sqlConn As New SqlConnection(Connection)
Dim ds As New DataSet
Dim sqlCmd As New SqlCommand("Search_List")
Dim sqlAdapter As New SqlDataAdapter
sqlCmd.CommandType = CommandType.StoredProcedure
sqlCmd.Connection = sqlConn
sqlAdapter.SelectCommand = sqlCmd
sqlCmd.Parameters.Add(New SqlParameter("#SearchKey", SqlDbType.NVarChar, 255, ParameterDirection.Input, True, CByte(0), CByte(0), "SearchKey", DataRowVersion.Default, SearchKey))
sqlCmd.Parameters.Add("RerurnValue", SqlDbType.Int)
sqlCmd.Parameters("RerurnValue").Direction = ParameterDirection.ReturnValue
Try
sqlConn.Open()
sqlAdapter.Fill(ds, "Result")
sqlConn.Close()
Catch ex As Exception
Exit Function
End Try
Return ds.Tables("Result")
End Function
and the SQL SP is :
ALTER PROCEDURE [dbo].[Search_List](
#SearchKey NVARCHAR(200)
)
AS
BEGIN
SET NOCOUNT ON;
DECLARE #Rc bigint
DECLARE #Err bigint
set #SearchKey = '%'+#SearchKey+'%'
CREATE
TABLE
#Temp
(
ID BIGINT,
elementType NVARCHAR(10),
NameAr NVARCHAR(255),
NAmeEn NVARCHAR(255),
DescAr NVARCHAR(MAX),
DescEn NVARCHAR(MAX),
URL NVARCHAR(MAX)
)
INSERT INTO #Temp
SELECT
Id
,'C'
,NameAr
,NameEn
,DescAr
,DescEn
,'Counsel.aspx'
FROM
CMS_Councils
Where
(NameAr like #SearchKey
OR
NameEn Like #SearchKey
OR
DescAr Like #SearchKey
OR
DescEn Like #SearchKey)
AND
isnull(Status,0) = 1
select * from #Temp
end
As you can see I have declared argument in VB as Nvarchr and SQL parameter #SearchKey as Nvarchar also if I send english data in #SearchKey search returns correct data, but if I tried to send arabic string in #SearchKey no results appeared knowing that there is arabic data inside the table
Am I missing something?
What Should I do further than that to allow arabic search?

Answer 1

You can try specifying a collation using the COLLATE keyword:
You'd need to specify arabic afterwards, for instance: COLLATE arabic_ci_as
SELECT
Id
,'C'
,NameAr
,NameEn
,DescAr
,DescEn
,'Counsel.aspx'
FROM
CMS_Councils
Where
(NameAr like #SearchKey
OR
NameEn Like #SearchKey
OR
DescAr Like #SearchKey
OR
DescEn Like #SearchKey)
AND
isnull(Status,0) = 1
COLLATE arabic_ci_as