SQL DATE filter on sales history

I am trying to write a simple SQL query that sums a salesman sales by month, but the date seems to be my trouble.

What I need to see is summed sales by salesman for a particular month/year 11-2013


SELECT HDR.slspsn_no,SUM(LIN.sls_amt)
FROM oehdrhst_sql HDR
INNER JOIN oelinhst_sql LIN ON
HDR.inv_no=LIN.inv_no
WHERE HDR.inv_dt=(11-2013)
GROUP BY HDR.slspsn_no

As the above is written I get (0 row(s) affected)

Any help would be much appreciated
Jeremy KirkbrideAsked:
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SharathData EngineerCommented:
You need to extract only month/ year from the date field before applying the filter. What is your database?
Jeremy KirkbrideAuthor Commented:
SQL
SharathData EngineerCommented:
SQL is not a database. I have asked if you are working in SQL Server/Oracle/DB2/MySQL or any other database?
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Jeremy KirkbrideAuthor Commented:
SQL Server 2012, but I am writing a query with SQL Server Management Studio. That help?
SharathData EngineerCommented:
try this.
SELECT HDR.slspsn_no, 
       SUM(LIN.sls_amt) 
  FROM oehdrhst_sql HDR 
       INNER JOIN oelinhst_sql LIN 
               ON HDR.inv_no = LIN.inv_no 
 WHERE RIGHT(CONVERT(VARCHAR(10), HDR.inv_dt, 103), 7) = '11/2013' 
 GROUP BY HDR.slspsn_no 

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Jeremy KirkbrideAuthor Commented:
Thanks so much, exactly what I needed. I'm sure simple for you, but I'm new to SQL
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