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Topic |
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evanburen
Posting Yak Master
167 Posts |
 Posted - 2014-12-16 : 15:35:21
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Hi
I have two tables joined by the field name 'PCA' and I want to get a list of records which do not appear in the table named DataRequests (the first table) for a particular ReportPeriod.
 
For example, this produces the records that I want. Every PCA except ConServe, EOS-Collecto and Allied would be in my results.
SELECT
PCAs.PCA
FROM
DataRequests RIGHT OUTER JOIN PCAs ON DataRequests.PCA = PCAs.PCA
WHERE
(DataRequests.PCA IS NULL)
However, what I really need is every record which does not appear in the DataRequest table for a given ReportPeriod. So if @ReportPeriod = '12/15/2014' my results would be every PCA except Conserver and EOS-Collecto
Allied Interstate
Account Control Technology
CBE Group
Coast Prof
Collection Tech
Delta Mgmt
Diversified
Enterprise Recovery
SELECT
PCAs.PCA
FROM
DataRequests RIGHT OUTER JOIN PCAs ON DataRequests.PCA = PCAs.PCA
WHERE
(DataRequests.PCA IS NULL) AND [ReportPeriod] = @ReportPeriod
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James K
Master Smack Fu Yak Hacker
3873 Posts |
Posted - 2014-12-16 : 16:31:44
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use one of theseSELECT
PCAs.PCA
FROM
PCAs
LEFT JOIN DataRequests r ON
r.ReportPeriod = @ReportPeriod
AND r.PCA = PCAs.PCA
WHERE
r.PCA IS NULL;
SELECT PCAs.PCA
FROM
PCAs
WHERE
NOT EXISTS
( SELECT * FROM DataRequests r
WHERE r.PCA = PCAs.PCA
AND r.ReportPeriod = @ReportPeriod
) If there can be more than one record in the DataRequests table for a given PCA and ReportPeriod, you must use the second query. |
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Finding Non-Matching Records