Is hiding all rows of duplicated data possible? - sql

Question

I am building a report using a SQL Stored Parameter that I created. It pulls data that may have 1 line per unique number, or 2 lines per unique number. I want to only show rows where there is only 1 line.
I have tried changing visibility, but the closest I have come to is
=IIF(Fields!uniquenumber.Value = previous(Fields!uniquenumber.value,True,False)
but this hides 1 of the rows, and not both. I have also tried using CASE WHEN in the query to identify if there are more than 1 line, but I still haven't been able to hide when there is more than 1 line. My query is below (redacted quite a few lines of extra criteria that aren't relevant to my question here. There are quite a few instances where the first part of my WHERE statement will have data that also meets the criteria of the 2nd part.
SELECT
Reorders.LastRxNo,
Reorders_1.LastRxNo AS Reorders1LastRxNo,
Rxs_2.RxBatch AS Rxs2RxBatch,
Reorders.FacID,
KeyIdentifiers.GPI,
Reorders.LastFillDt,
Rxs_1.RxBatch as Rxs1RxBatch,
CASE
WHEN (Reorders.LastRxNo<>Reorders_1.LastRxNo) THEN 1
ELSE 0
END AS Duplicate
FROM Reorders
LEFT OUTER JOIN Rxs AS Rxs_1
ON Reorders.LastRXNo = Rxs_1.RxNo
RIGHT OUTER JOIN KeyIdentifiers
ON Reorders.NDC = KeyIdentifiers.NDC
INNER JOIN Patients
ON Reorders.FacID = Patients.FacID
AND Reorders.PatID = Patients.PatID
LEFT OUTER JOIN Reorders AS Reorders_1
ON Reorders.FacID = Reorders_1.FacID
AND Reorders.PatID = Reorders_1.PatID
AND KeyIdentifiers.NDC = Reorders_1.NDC
LEFT OUTER JOIN Rxs AS Rxs_2
ON Reorders_1.LastRxNo = Rxs_2.RxNo
WHERE
Reorders.ProfileOnly = 1
AND Rxs_1.RxBatch IS NULL
AND Reorders.CutOffDt IS NULL
AND Reorders.PackType LIKE 'PHDEF%'
AND Reorders.Auto = 1
AND Reorders.PhRxStatus IS NULL
AND Reorders.LastFillDt > '01/01/2019'
AND (Reorders.LastRxNo = Reorders_1.LastRxNo
OR Reorders.LastRxNo <> Reorders_1.LastRxNo AND Rxs_2.RxBatch IN ('CF','GONE'))
ORDER BY Reorders.FacID, Patients.PatLName, Patients.PatFName
Yields Results Similar to:
LastRxNo Reorders1LastRxNo Rxs2RxBatch Duplicate
111 111 null 0
222 222 null 0
222 444 CF 1
In the above example, I only need to see the lines like line 1. Since "LastRxNo" 222 has 2 lines, I do not want to see it on my final report. (However, it is queried, because when LastRxNo =222 AND Reorders1LastRxNo = 222 and Rxs2RxBatch IS NULL would pull if I didn't account for it in my WHERE statement, I think. I am happy doing this any way possible, whether it be in the query or in SSRS report.

Answer 1

Replace your CASE ... as duplicate with
COUNT(*) OVER(PARTITION BY LastRxNo) AS LastRxNoCount
then
wrap the whole query in another select like this...
SELECT * FROM
(
your original query here including the change stated above
) q
WHERE q.LastRxNoCount =1

Answer 2

Just filter out all rows where the number of rows is greater than 1:
SELECT LastRxNo, RxBatch
FROM Reorders
WHERE RxBatch IN ('CF','GONE')
AND Reorders.LastRxNo IN
(SELECT LastRxNo FROM Reorders GROUP BY LastRxNo HAVING COUNT(LastRxNo) = 1)
You should just be able to add the last two lines into your WHERE clause.
Alternatively, you could add it to your JOIN conditions:
SELECT
Reorders.LastRxNo
FROM Reorders
INNER JOIN (
SELECT LastRxNo FROM Reorders
GROUP BY LastRxNo
HAVING COUNT(LastRxNo) = 1
) AS UniqueRxNo ON UniqueRxNo.LastRxNo = Reorders.LastRxNo

Answer 3

Yes, you can do it one of 2 ways:
is in your data source, do a distinct select.
Set the "Hide Duplicates" property on the detail line in the report properties