troubleshooting Question

What can the "OPTION" in the GROUP help me in my query?

Avatar of hidrau
hidrauFlag for Brazil asked on
Microsoft SQL Server 2008
4 Comments2 Solutions152 ViewsLast Modified:
I have this example, but as I don't have the database AdventureWorks2012, I'd like to know what does that OPTION serve for?

USE AdventureWorks2012;
GO
SELECT ProductID, OrderQty, SUM(LineTotal) AS Total
FROM Sales.SalesOrderDetail
WHERE UnitPrice < $5.00
GROUP BY ProductID, OrderQty
ORDER BY ProductID, OrderQty
OPTION (HASH GROUP, FAST 10);
GO

another example

USE AdventureWorks2012;
GO
SELECT BusinessEntityID, JobTitle, HireDate, VacationHours, SickLeaveHours
FROM HumanResources.Employee AS e1
UNION
SELECT BusinessEntityID, JobTitle, HireDate, VacationHours, SickLeaveHours
FROM HumanResources.Employee AS e2
OPTION (MERGE UNION);
GO

Thanks
alex
ASKER CERTIFIED SOLUTION
Matt Bowler
Database Reliability Engineer

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