Sum

MSSQL 2012 New T-SQL Features

/ MSSQL Server /

The example query below uses a new feature in SQL Server 2012 to divide the result of a query in pages. This particular example will start from the second record and retrieves the following 2 records.

SELECT [name], [value] FROM Table1
ORDER BY id
OFFSET 2 ROWS
FETCH NEXT 2 ROWS

The next query adds a derived column to the result with a cumulative sum based on a specific column. When using PARTITION BY the sum is only applied to the specific group.

SELECT [name], [value], 
SUM(value) OVER (
    --PARTITION BY [name] --SUM by column name only...
    ORDER BY id
    ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW
    ) AS cummulativeValue
FROM Table1

MSSQL combine SUMS from 2 tables

/ MSSQL Server /

Below query combines the SUMS of two tables into a total SUM for a specific column.

WITH combiTable ([Table], xName, xValue)
AS ( SELECT 1 AS [Table], name, SUM(value) FROM Table1 GROUP BY name
     UNION
     SELECT 2 AS [Table], name, SUM(value) FROM Table2 GROUP BY name )
SELECT xName AS Name, SUM(xValue) AS Total FROM combiTable
GROUP BY xName
ORDER BY Total DESC
GO