Use Results of CTE to Update Another Table - sql-server

Question

I have the following CTE that does what I want it to do.
;WITH numbering AS
(
SELECT SrcID, AsOfDate, PID,
dense_rank() OVER (PARTITION BY SrcID ORDER BY PID) AS rowno
FROM RAW_DATA
)
SELECT SrcID,
MAX(CASE rowno WHEN 1 THEN PID END) AS PID1,
MAX(CASE rowno WHEN 2 THEN PID END) AS PID2,
MAX(CASE rowno WHEN 3 THEN PID END) AS PID3,
MAX(CASE rowno WHEN 4 THEN PID END) AS PID4
FROM numbering
GROUP BY SrcID
I need to use that, as well as the AsOfDate and PID, but I don’t want to display these in the CTE, as that throws off populating PID1, PID2, PID3, and PID4 . . . all of which is correct now. I do need the SrcID and AsOfDate to do an update to another table, named ‘RAW_DATA’. How can I run the CTE to generate the specific data set that I need, and then do an update to the RAW_DATA table, based on joins between SrcID and AsOfDate?
I think it should be something like this:
;WITH numbering AS
(
SELECT SrcID, AsOfDate, PID,
dense_rank() OVER (PARTITION BY SrcID ORDER BY PID) AS rowno
FROM RAW_DATA
)
SELECT SrcID,
MAX(CASE rowno WHEN 1 THEN PID END) AS PID1,
MAX(CASE rowno WHEN 2 THEN PID END) AS PID2,
MAX(CASE rowno WHEN 3 THEN PID END) AS PID3,
MAX(CASE rowno WHEN 4 THEN PID END) AS PID4
FROM numbering
GROUP BY SrcID
INSERT INTO RAW_DATA(SrcID, AsOfDate, PID, PID1, PID2, PID3, PID4)
Select *
FROM RAW_DATA INNER JOIN numbering
ON RAW_DATA.SrcID = numbering.SrcID
AND RAW_DATA.AsofDate = numbering.AsofDate
However, that throws this error: Invalid object name 'numbering'. I am on SQL Server 2008.
Update
Modifying my original post just a bit here.
Jeffrey, I'm testing your solution:
--drop table Count_Unique_PID
;WITH numbering AS
(
SELECT SrcID, AsOfDate, PID,PID1,PID2,PID3,PID4,
dense_rank() OVER (PARTITION BY AsOfDate, SrcID ORDER BY PID) AS rowno
FROM RAW_DATA
)
SELECT SrcID,AsOfDate, PID,
MAX(CASE rowno WHEN 1 THEN PID END) AS PID1,
MAX(CASE rowno WHEN 2 THEN PID END) AS PID2,
MAX(CASE rowno WHEN 3 THEN PID END) AS PID3,
MAX(CASE rowno WHEN 4 THEN PID END) AS PID4
INTO Count_Unique_PID
FROM numbering
GROUP BY SrcID,AsOfDate, PID
SELECT SrcID,
AsOfDate,
PID,
PID1,
PID2,
PID3,
PID4
FROM Count_Unique_PID
GROUP BY SrcID,AsOfDate, PID,PID1,PID2,PID3,PID4
UPDATE RAW_DATA
SET PID1 = B.PID1,
PID2 = B.PID2,
PID3 = B.PID3,
PID4 = B.PID4
FROM RAW_DATA AS A INNER JOIN Count_Unique_PID As B
ON A.SrcID = B.SrcID
AND A.AsofDate = B.AsofDate
This runs, but it blows up my rows from 357,518 to 724,150. The number of records should stay the same; it should remain 357,518 after the Update is done...something is still not quite right here. Maybe I am missing a Group By somewhere, or something like that. I don't see what the actual problem is. Any additional thoughts on this?

Answer 1

CTEs can only be referenced by the immediately-following statement. If you need the results later, you could insert the CTE into a temp table, then select from that temp table and then insert from that temp table:
;WITH numbering AS
(
SELECT SrcID, AsOfDate, PID,
dense_rank() OVER (PARTITION BY SrcID ORDER BY PID) AS rowno
FROM RAW_DATA
)
SELECT SrcID,
MAX(CASE rowno WHEN 1 THEN PID END) AS PID1,
MAX(CASE rowno WHEN 2 THEN PID END) AS PID2,
MAX(CASE rowno WHEN 3 THEN PID END) AS PID3,
MAX(CASE rowno WHEN 4 THEN PID END) AS PID4
INTO #tmp
FROM numbering
GROUP BY SrcID
SELECT SrcID,
PID1,
PID2,
PID3,
PID4
FROM #tmp
GROUP BY SrcID
INSERT INTO RAW_DATA(SrcID, AsOfDate, PID, PID1, PID2, PID3, PID4)
Select *
FROM RAW_DATA INNER JOIN #tmp
ON RAW_DATA.SrcID = #tmp.SrcID
AND RAW_DATA.AsofDate = #tmp.AsofDate

Answer 2

You need encapsulate your query as a second cte:
sintaxis is
WITH cte1 as (
SELECT ...
), cte2 as (
SELECT *
FROM cte1
.....
)
INSERT INTO table_name
SELECT *
FROM cte2

Answer 3

Your SELECT statement is doing nothing for the insert (maybe it's for validation). Simply remove the select statement and your insert should work.
;WITH numbering AS
(
SELECT SrcID, AsOfDate, PID,
dense_rank() OVER (PARTITION BY SrcID ORDER BY PID) AS rowno
FROM RAW_DATA
)
INSERT INTO RAW_DATA(SrcID, AsOfDate, PID, PID1, PID2, PID3, PID4)
Select *
FROM
RAW_DATA INNER JOIN numbering
ON RAW_DATA.SrcID = numbering.SrcID
AND RAW_DATA.AsofDate = numbering.AsofDate
If you need to run a select on the CTE as well, you should use a temp table to it will exist as long as the query is running.