SQL Server: add ranking to nested selects

Question

I am using the following stored procedure which works fine so far.

Can someone tell me how I have to change this in order to get a ranking for each of the nested Selects ? What I am looking for is a new rank that gets added to each of them so that every nested Select starts with 1, 2, 3 etc.

My SP:

SELECT  *
FROM    (
            SELECT 
            (
                SELECT      policy, 
                            COUNT(*) AS count0
                FROM        Log_PE 
                WHERE       CONVERT(DATE, dateEsc, 120) >= CONVERT(DATE, CONVERT(VARCHAR(6), DATEADD(month, -1, GETDATE()), 112) + '01', 112)
                GROUP BY    policy
                ORDER BY    count0 desc, policy
                FOR XML PATH('currentMonth'), ELEMENTS, TYPE
            )
            UNION ALL
            SELECT
            (
                SELECT      policy, 
                            COUNT(*) AS count1
                FROM        Log_PE 
                WHERE       CONVERT(DATE, dateEsc, 120) >= CONVERT(DATE, CONVERT(VARCHAR(6), DATEADD(month, -1, GETDATE()), 112) + '01', 112)
                GROUP BY    policy
                ORDER BY    count1 desc, policy
                FOR XML PATH('prevMonth2'), ELEMENTS, TYPE
            )
            UNION ALL
            SELECT
            (
                SELECT      policy, 
                            COUNT(*) AS count2
                FROM        Log_PE 
                WHERE       CONVERT(DATE, dateEsc, 120) >= CONVERT(DATE, CONVERT(VARCHAR(6), DATEADD(month, -2, GETDATE()), 112) + '01', 112)
                GROUP BY    policy
                ORDER BY    count2 desc, policy
                FOR XML PATH('prevMonth3'), ELEMENTS, TYPE
            )
            UNION ALL
            SELECT
            (
                SELECT      policy, 
                            COUNT(*) AS count3
                FROM        Log_PE 
                WHERE       CONVERT(DATE, dateEsc, 120) >= CONVERT(DATE, CONVERT(VARCHAR(6), DATEADD(month, -3, GETDATE()), 112) + '01', 112)
                GROUP BY    policy
                ORDER BY    count3 desc, policy
                FOR XML PATH('prevMonth4'), ELEMENTS, TYPE
            )
            UNION ALL
            SELECT
            (
                SELECT      policy, 
                            COUNT(*) AS count4
                FROM        Log_PE 
                WHERE       CONVERT(DATE, dateEsc, 120) >= CONVERT(DATE, CONVERT(VARCHAR(6), DATEADD(month, -4, GETDATE()), 112) + '01', 112)
                GROUP BY    policy
                ORDER BY    count4 desc, policy
                FOR XML PATH('prevMonth5'), ELEMENTS, TYPE
            )
            UNION ALL
            SELECT
            (
                SELECT      policy, 
                            COUNT(*) AS count5
                FROM        log_PE 
                WHERE       CONVERT(DATE, dateEsc, 120) >= CONVERT(DATE, CONVERT(VARCHAR(6), DATEADD(month, -5, GETDATE()), 112) + '01', 112)
                GROUP BY    policy
                ORDER BY    count5 desc, policy
                FOR XML PATH('prevMonth5'), ELEMENTS, TYPE
            )
        ) AS Data(XmlData)
    FOR XML PATH(''), ELEMENTS, TYPE

END

Many thanks for any help with this, Tim.

Answer 1

Add this column to each of your nested selects:

rank() over(order by count(*) desc, policy) [Rank]