compare two sql statement

cmp.sql

DECLARE @Query1Checksum bigint
DECLARE @Query2Checksum bigint

Use Northwind354 
-- Get checksum from source query
Select @Query1Checksum = CHECKSUM_AGG(BINARY_CHECKSUM(*))
FROM
(
    -- [Start Source Query]
    SELECT O.OrderID, O.OrderDate,
    (SELECT MAX(OrdDet.UnitPrice)
    FROM [Order Details] OrdDet
    WHERE O.OrderID = OrdDet.OrderID) AS MaxUnitPrice
    FROM Orders O
    -- [End Source Query]
)
AS Source
 
-- Get checksum from comparison query
Select @Query2Checksum = CHECKSUM_AGG(BINARY_CHECKSUM(*))
FROM
(
    -- [Start Comparison Query]
    SELECT DISTINCT  O.OrderID, O.OrderDate, OD.UnitPrice 
FROM Orders AS O INNER JOIN [Order Details] AS OD
ON O.OrderID = OD.OrderID
WHERE OD.UnitPrice = (
SELECT MAX(OD2.UnitPrice) FROM [Order Details]AS OD2
WHERE OD2.OrderID = O.OrderID
)

    -- [End Comparison Query]
)
As Comparison
 
-- Compare CheckSums to determine equality
IF @Query1Checksum = @Query2Checksum
    PRINT 'Queries are Equal'
ELSE
    PRINT 'Queries are NOT Equal'

--- subprocess.call("sqlcmd -S cypress.csil.sfu.ca -i test.sql -o test.result")