Referral Source, Patient Count and Charges By Month

The unique thing about this query is that it creates a grid with the months across the top. For each
Referral Source/Year there is a single row.

SELECT 
   b.refname as "Ref’d By", 
   YEAR(c.trandate) as "Year",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 1 THEN c.ptnum ENDIF)) as "Jan Count",
   SUM(IF MONTH(c.trandate) = 1 THEN c.amount ELSE 0 ENDIF) as "Jan Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 2 THEN c.ptnum ENDIF)) as "Feb Count",
   SUM(IF MONTH(c.trandate) = 2 THEN c.amount ELSE 0 ENDIF) as "Feb Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 3 THEN c.ptnum ENDIF)) as "Mar Count",
   SUM(IF MONTH(c.trandate) = 3 THEN c.amount ELSE 0 ENDIF) as "Mar Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 4 THEN c.ptnum ENDIF)) as "Apr Count",
   SUM(IF MONTH(c.trandate) = 4 THEN c.amount ELSE 0 ENDIF) as "Apr Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 5 THEN c.ptnum ENDIF)) as "May Count",
   SUM(IF MONTH(c.trandate) = 5 THEN c.amount ELSE 0 ENDIF) as "May Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 6 THEN c.ptnum ENDIF)) as "Jun Count",
   SUM(IF MONTH(c.trandate) = 6 THEN c.amount ELSE 0 ENDIF) as "Jun Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 7 THEN c.ptnum ENDIF)) as "Jul Count",
   SUM(IF MONTH(c.trandate) = 7 THEN c.amount ELSE 0 ENDIF) as "Jul Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 8 THEN c.ptnum ENDIF)) as "Aug Count",
   SUM(IF MONTH(c.trandate) = 8 THEN c.amount ELSE 0 ENDIF) as "Aug Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 9 THEN c.ptnum ENDIF)) as "Sep Count",
   SUM(IF MONTH(c.trandate) = 9 THEN c.amount ELSE 0 ENDIF) as "Sep Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 10 THEN c.ptnum ENDIF)) as "Oct Count",
   SUM(IF MONTH(c.trandate) = 10 THEN c.amount ELSE 0 ENDIF) as "Oct Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 11 THEN c.ptnum ENDIF)) as "Nov Count",
   SUM(IF MONTH(c.trandate) = 11 THEN c.amount ELSE 0 ENDIF) as "Nov Chgs",
   COUNT (DISTINCT (IF MONTH(c.trandate) = 12 THEN c.ptnum ENDIF)) as "Dec Count",
   SUM(IF MONTH(c.trandate) = 12 THEN c.amount ELSE 0 ENDIF) as "Dec Chgs",
   COUNT(DISTINCT a.ptnum) as "# Count", SUM(c.amount) as "TotChgs"
FROM 
   sos.patients a
   JOIN sos.refsrcs b on a.refsrcnum = b.refsrcnum
   JOIN sos.journal c on a.ptnum = c.ptnum
WHERE 
   c.trantype = 'S' 
   AND c.trandate > '2000-12-31'
GROUP BY 
   b.refname, 
   YEAR(c.trandate)
ORDER BY 
   b.refname, 
   YEAR(c.trandate)

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