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SQL return multiple columns based of there max date and the date is less than certain value

December 13, 2022

What I am trying to do is find the ‘newest’ Ad Rates based on its date. I need to return multiple columns which will be grouped by the store. I am using SSMS. and below is a screen shot of what the table looks like with all the values. Disregard the Id.

As you will see, there are multiple store numbers out there. There will also be a parameter passed into this select where the AdRateDate can not be larger than.

So if my parameter is Declare @toDate DateTime = ‘2022-11-30 00:00:00.000’

Then the data return should be

Here is the script I was trying, and I am lost!

DECLARE @ToDate DATETIME = '2022-11-30 00:00:00.000'  
SELECT StoreNumber, AdRate  
FROM StoreAdRate  
WHERE AdRateDate =  
 (Select Max(AdRateDate) From StoreAdRate Where AdRateDate <= @ToDate And StoreNumber = StoreNumber)

>Solution :

I think your statement is on the right track and just lack alias to differentiate between StoreNumber in sub-query and main query.

Try the following:

DECLARE @ToDate DATETIME = '2022-11-30 00:00:00.000';

SELECT StoreNumber, AdRate
FROM StoreAdRate sar
WHERE AdRateDate = (Select Max(AdRateDate) From StoreAdRate sub 
                    Where sub.AdRateDate <= @ToDate 
                    And sub.StoreNumber = sar.StoreNumber);