ROW_NUMBER() OVER PARTITION returning duplicate values

Question

The following query results in duplicate row_numbers after the first partitioned set. For example, the first set of fldPK = 2403 and fldCIA = 1 I receive the following...

2403    1    1
2403    1    2
2403    1    3
2403    1    4

and in the second set I receive...

2403    2    1
2403    2    1 <-- duplicate 1 within the same partition
2403    2    2
2403    2    3

    SELECT *, 1 AS fldBF, 
              ROW_NUMBER() OVER (PARTITION BY fldPK, fldCIA ORDER BY fldPK) AS sCount 
    INTO #tmpTable 
    FROM V_qryCSPGA 
    WHERE fldPK IN(SELECT DISTINCT thePK FROM FN_qryAllDTPK()) 

    UNION ALL   

    SELECT *, 1 AS fldBF, 
              ROW_NUMBER() OVER (PARTITION BY fldPK, fldCIA ORDER BY fldPK) AS sCount 
    FROM FN_qryCSGBA() 
    WHERE fldPK IN(SELECT DISTINCT thePK FROM FN_qryAllDTPK())
    ORDER BY fldPK, fldCIA, fldNDat; 

Why is this occurring? for every set of fldPK and fldCIA I need a to restart the row number count at 1, more proper data would be...

2403    3    1
2403    3    2
2403    3    3
2403    3    4
2403    3    5
2403    3    6
2403    3    7
2403    3    8
2403    3    9

Answer 1

This will stop the duplicate numbers. Whether the new numbering will be what you are really after, is another thing:

; WITH cte AS
  ( SELECT *, 1 AS fldBF
    FROM V_qryCSPGA 
    WHERE fldPK IN(SELECT DISTINCT thePK FROM FN_qryAllDTPK()) 

    UNION ALL   

    SELECT *, 1 AS fldBF
    FROM FN_qryCSGBA() 
    WHERE fldPK IN(SELECT DISTINCT thePK FROM FN_qryAllDTPK())
  )
SELECT *, 
       ROW_NUMBER() OVER (PARTITION BY fldPK, fldCIA ORDER BY fldPK) AS sCount 
INTO #tmpTable 
FROM cte 
ORDER BY fldPK, fldCIA, fldNDat;