find the length of ntext datatype variable

  • Hello everyone, i m using SQL Server 2000, i need help, here is my SP which i used to insert bulk records from my application:

    CREATE PROCEDURE UpdateWTSSubscriptionPrefrences

    @MemberIDint,

    @xmlWTSPrefrences nText

    AS

    --Declare output handle

    DECLARE @xmlHandleWTS int

    --PREPARE XML DOC

    exec sp_xml_preparedocument @xmlHandleWTS OUTPUT,@xmlWTSPrefrences

    --INSERT THE WTS Prefrences READING XML DOC

    BEGIN

    --Delete Old Listings

    DELETE from MembersAlertSubscriptions where MemberID=@MemberID and ModuleType=1

    --if (Len(@xmlWTSPrefrences)>0)

    --BEGIN

    Insert Into MembersAlertSubscriptions

    SELECT MemberID,CategoryID,ModuleType

    FROM OPENXML (@xmlHandleWTS, '/NewDataSet/Table1',1)

    WITH(MemberID int, CategoryID int, ModuleType int)

    --END

    END

    --RELEASE Handle

    EXEC sp_xml_removedocument @xmlHandleWTS

    GO

    now i want to make check on the vaiable @xmlWTSPrefrences (its contain the string returned by the application)i want to

    calculate the length of the string comes in that variable and if length is greater than zero then the Insert stmt is working otherwise

    print msg.

    Now when i used this for testing :

    declare @myVar ntext

    set @myVar = '123456'

    if (Len(@myVar)>0)

    print 'Length is not zero'

    else

    print 'length is zero'

    it gives me following msg: "The text, ntext, and image data types are invalid for local variables."

    plz tell me how to find the length of the ntext datatype variable.

    Thanx in Advance.

  • use DataLength function, for more information see SQL BOL.

    try like this:

    if datalength (@xmlWTSPrefrences) <> 0

    begin

    -- do something

    end

    else

    begin

    -- do something

    end

    🙂

  • This is very simple error.

    Just as the text suggests, you can't declare local ntext variables.


    N 56°04'39.16"
    E 12°55'05.25"

  • As the message suggests, you cannot create local variables of text, ntext or image data types.

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