Here's what I used... modified from user's OP:
USE TEMPDB;
GO

Create table client_info
(client_number int,
Claim_date date,
Product_id int
);
GO
Insert into client_info

Which part are you stuck on? This place isn't an answer machine... If you post what you tried, people will be much more willing to help. So what have you...

Nobody's going to download files that can damage his computer. Can you just post the contents of the spreadsheet here?

ROFL. SEND MONEY.
Seriously though - that's not how this place works. It's not a "please do my work for me" site. If you're looking for that, then you're going...

In a nutshell, you're trying to do a fuzzy match between two columns of data? What version of SQL 2008 are you using? (I think fuzzy lookups in SSIS are...

Do you get error messages? Can you post some code or something? There's just about zero to go on to help you figure this out. Did you change something in...

Maybe this?
https://www.red-gate.com/simple-talk/blogs/string-comparisons-in-sql-edit-distance-and-the-levenshtein-algorithm/

Thanks for the sample data. The only thing missing now is an explanation of what you really want - like a sample result that you're trying to return..??

Please please please don't post pictures of your database. Those are worthless. I can't copy & paste into SSMS and run it.  So since I don't have real tables, I'll...

Oh fun!
This sounds like it's the end part of some dynamic SQL statement, so you need to track down exactly what query is being built, so you know the...

the other option is to OUTER join to your Calendar table.
...
FROM Calendar c LEFT JOIN Sales s
   ON c.CalendarDate = s.SaleDate

because that forces a value...

Bart vs. Australia, anyone?