SQL Server 2008 CTE And CONTAINSTABLE Statement - Why the error? - sql

Question

I am testing out moving our database from SQL Server 2005 to 2008. We use CTE's for paging.
When using full-text CONTAINSTABLE, the CTE will not run and generates an error.
Here's my non-working code-
WITH results AS (
SELECT ROW_NUMBER() over (ORDER BY GBU.CreateDate DESC ) as rowNum,
GBU.UserID,
NULL AS DistanceInMiles
FROM User GBU WITH (NOLOCK)
WHERE 1=1
AND GBU.CountryCode IN (SELECT [Value] FROM fn_Split('USA',','))
AND GBU.UserID IN (SELECT [KEY] FROM CONTAINSTABLE(VW_GBU_Search, *, 'COMPASS'))
)
SELECT * from results
WHERE rowNum BETWEEN 0 and 25
If I comment out the CONTAINSTABLE line, the statement executes. If I only run the SELECT statement (not the WITH), the statement executes fine.
The un-helpful error I get on this is:
Msg 0, Level 11, State 0, Line 0 A
severe error occurred on the current
command. The results, if any, should
be discarded. Msg 0, Level 20, State
0, Line 0 A severe error occurred on
the current command. The results, if
any, should be discarded.
Any suggestions?

Answer 1

Appears to be a bug. See http://connect.microsoft.com/SQLServer/feedback/ViewFeedback.aspx?FeedbackID=426981
Sounds like the fix should be in the next MSSQL SP.

Answer 2

Assuming the other answers are correct, and that the underlying issue is a bug, since you aren't referencing RANK from CONTAINSTABLE, perhaps a query something like the following would be a workaround, where "ID" is the ID column in VW_GBU_Search (untested)?
;WITH results AS (
SELECT ROW_NUMBER() OVER (ORDER BY GBU.CreateDate DESC ) AS rowNum,
GBU.UserID,
NULL AS DistanceInMiles
FROM User GBU WITH (NOLOCK)
WHERE 1=1
AND GBU.CountryCode IN (SELECT [Value] FROM fn_Split('USA',','))
AND GBU.UserID IN (SELECT ID FROM VW_GBU_Search WHERE CONTAINS(*, 'COMPASS'))
)
SELECT * FROM results
WHERE rowNum BETWEEN 0 AND 25
Also, why do you have the "1=1" clause? Can you eliminate it?

Answer 3

I banged my head against the wall on this problem for hours; here is a workaround:
ASSUME: A table in database called
Items ( ItemId int PK, Content varchar(MAX) ),
which has a fulltext index already applied.
GO
CREATE FUNCTION udf_SearchItemsTable(#FreeText)
RETURNS #SearchHits
TABLE(
Relevance int,
ItemId int,
Content varchar(MAX)
)
AS
BEGIN
INSERT #SearchHits
SELECT Results.[Rank] AS Relevance
,Items.ItemId AS ItemId
,Items.Content AS Content
FROM SearchableItems AS Items INNER JOIN
CONTAINSTABLE(SearchableItems, *, #FreeText) AS Results
Results.[Key] = Items.Id
RETURN
END
GO
...
GO
CREATE FUNCTION udf_SearchItems( #SearchText, #StartRowNum, #MaxRows)
RETURNS #SortedItems
TABLE (
ItemId int,
Content varchar(MAX)
)
AS
BEGIN
WITH Matches AS
(
SELECT
ROW_NUMBER() OVER (ORDER BY Hits.Relevance DESC) AS RowNum
,Hits.*
FROM ( udf_SearchItemsTable(#SearchText) ) AS Hits
)
SELECT
ItemId, Content
FROM
Matches
WHERE
Matches.RowNum BETWEEN #StartRowNum
AND #StartRowNum + #MaxRows
;
RETURN
END
GO
select * from udf_SearchItems('some free text stuff', 10, 20)