如何在sql查询中添加表底部的行？

Question

I have select query and I want add row bottom of table which contains sum of debit and credit column.

My SQL query is like:

SELECT * 
FROM 
    (SELECT 
        so.OrderDate ,'Sales' As VoucherType,'' AS VoucherNo,
        a.Total As Debit, NULL As Credit 
    FROM SalesOrder so 
    INNER JOIN
       (SELECT 
           SalesOrderId, SUM(SubTotal) AS Total 
        FROM SalesOrderDetails 
        GROUP BY SalesOrderId) AS a ON so.SalesOrderId = a.SalesOrderId

        UNION ALL

        SELECT  
           v.VoucherDate As OrderDate, 'Receipt' AS VoucherType,
           v.VoucherNumber AS VoucherNo, NULL AS Debit,
           v.Amount AS Credit 
        FROM Vouchers v) AS ledger 
ORDER BY 
     OrderDate ASC

My query output is in below image.

Answer 1

You can do this with grouping sets . First, rearrange the query a bit to be an aggregation query. The aggregations don't do anything, but they are needed for the total.

Then use group by grouping sets () to define the various groups:

SELECT OrderDate, VoucherType, VoucherNo, sum(Debit) as Debit, sum(Credit) as Credit
FROM (SELECT so.OrderDate ,'Sales' As VoucherType, '' AS VoucherNo,
             a.Total As Debit, NULL As Credit
      from SalesOrder so inner join
           (SELECT SalesOrderId,sum(SubTotal) AS Total
            FROM SalesOrderDetails 
            group by SalesOrderId)as a on so.SalesOrderId = a.SalesOrderId
            UNION ALL
            SELECT v.VoucherDate As OrderDate, 'Receipt' AS VoucherType,
                   v.VoucherNumber AS VoucherNo,NULL AS Debit ,
                   v.Amount AS Credit from Vouchers v
           ) ledger
GROUP BY GROUPING SETS ((OrderDate, VoucherType, VoucherNo), ())
ORDER BY OrderDate ASC