I've got a table inside a SQL Server 2000 database which stores SQL claims within an NTEXT column. I have to read one of these simple values, carry out some substitutes onto it using UPDATETEXT after which carry it out using sp_executesql. I am conscious that you cannot declare NTEXT variables in SQL Server 2000, to workaround i have declared a brief table to keep the worthiness and manipulate it. The final step would be to pass that value to sp_executesql, however i can't learn how to do this. Representative code to date is below:

/*Create a temp table to store the NTEXT SQL statement*/
CREATE TABLE #temp
(
    SqlStatement NTEXT
)

/*Get the statement*/
INSERT INTO #temp (SqlStatement)
SELECT [SqlStatement]
FROM [Reports]
WHERE ID = @ID

-- Format placeholders in statement
DECLARE @placeholder VARCHAR(20)
DECLARE @placeholderIndex INT           
SET @placeholder = '@param1'

SELECT @placeholderIndex = (CHARINDEX(placeholder, SqlStatement) - 1) FROM #temp

/*Get a pointer to the NTEXT field*/
DECLARE @textPtr VARBINARY(16)
SELECT @textPtr = TEXTPTR(SqlStatement) FROM #temp

IF @placeholderIndex > 0
BEGIN         
UPDATETEXT #temp.SqlStatement @textPtr @placeholderIndex 7 'paramValue'
END

/*
Get the statement and execute
DECLARE @SqlText NTEXT -- This is not possible in SQL 2000
*/

exec sp_executesql @SqlText

How do i get and execute the SQL statement? Casting to some varchar would potentially truncate the statement.

NB: I understand this can be a laborious method of doing things the style of the machine has run out of my control.