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    <p><strong>Test Data</strong></p> <pre><code>create table #LoanTable ( ID int not null, RegionCode nvarchar(50) not null, LoanDate datetime not null ); insert into #LoanTable values (1,'5','10/01/2014'), (2,'5','10/18/2014'), (3,'5','10/02/2014'), (4,'3','04/11/2014'), (5,'3','04/05/2014'), (6,'4A','01/09/2014'), (7,'4A','01/05/2014') create table #LoanDetailsTable ( ID int not null, LoanAmount INT not null, LoanDate datetime not null ); insert into #LoanDetailsTable values (1,5000,'10/15/2014'), (2,1000,'10/11/2014'), (3,2000,'10/09/2014'), (4,1500,'04/13/2014'), (5,5000,'04/17/2014'), (6,500,'01/19/2014'), (7,2500,'01/15/2014') </code></pre> <p><strong>Query</strong></p> <pre><code>;With RegCode AS ( SELECT RegionCode, MAX(MONTH(LoanDate)) [Month] FROM #LoanTable GROUP BY RegionCode ) SELECT LDT.* , RC.RegionCode FROM #LoanDetailsTable LDT INNER JOIN RegCode RC ON MONTH(LDT.LoanDate) = RC.[Month] </code></pre> <p><strong>Results</strong></p> <pre><code>ID LoanAmount LoanDate RegionCode 1 5000 2014-10-15 00:00:00.000 5 2 1000 2014-10-11 00:00:00.000 5 3 2000 2014-10-09 00:00:00.000 5 4 1500 2014-04-13 00:00:00.000 3 5 5000 2014-04-17 00:00:00.000 3 6 500 2014-01-19 00:00:00.000 4A 7 2500 2014-01-15 00:00:00.000 4A </code></pre> <p>Using CTE extract the Month part of the date along with Region Code associated with it, then join it with you data table on Month of the loan date and extracted month in cte and get the Region code whatever it is at that time. happy days :)</p>
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    1. COThis would work, the problem is the Region code varies every month so it should be on a table like i showed above instead of hardcoded
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    2. CO@User6675636b20796f7521 yes thats fine you can add 12 WHEN statements in your case statement and provide the Region code for all 12 months of the year.
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    3. COor you trying to say it changes for all the months every month ???
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