July 13, 2015 at 10:30 am
Hello Experts
WAs trying to explore about Plan Guides. Created few plan guides (taken from MSDN), but unable to determine, how that is going to help me.
IF OBJECT_ID(N'Sales.GetSalesOrderByCountry', N'P') IS NOT NULL
DROP PROCEDURE Sales.GetSalesOrderByCountry;
GO
CREATE PROCEDURE Sales.GetSalesOrderByCountry
(@Country_region nvarchar(60))
AS
BEGIN
SELECT *
FROM Sales.SalesOrderHeader AS h
INNER JOIN Sales.Customer AS c ON h.CustomerID = c.CustomerID
INNER JOIN Sales.SalesTerritory AS t
ON c.TerritoryID = t.TerritoryID
WHERE t.CountryRegionCode = @Country_region;
END
EXEC sp_create_plan_guide
@name = N'Guide1',
@stmt = N'SELECT *
FROM Sales.SalesOrderHeader AS h
INNER JOIN Sales.Customer AS c
ON h.CustomerID = c.CustomerID
INNER JOIN Sales.SalesTerritory AS t
ON c.TerritoryID = t.TerritoryID
WHERE t.CountryRegionCode = @Country_region',
@type = N'OBJECT',
@module_or_batch = N'Sales.GetSalesOrderByCountry',
@params = NULL,
@hints = N'OPTION (OPTIMIZE FOR (@Country_region = N''US''))';
Can anyone please suggest after creating the above plan-guide, what next to be done to utilize this feature the most?
Thanks.
July 13, 2015 at 10:59 am
Instead of writing two sepereate blcks, can I not modify the SP with the below string?
IF OBJECT_ID(N'Sales.GetSalesOrderByCountry', N'P') IS NOT NULL
DROP PROCEDURE Sales.GetSalesOrderByCountry;
GO
CREATE PROCEDURE Sales.GetSalesOrderByCountry
(@Country_region nvarchar(60))
AS
BEGIN
SELECT *
FROM Sales.SalesOrderHeader AS h
INNER JOIN Sales.Customer AS c ON h.CustomerID = c.CustomerID
INNER JOIN Sales.SalesTerritory AS t
ON c.TerritoryID = t.TerritoryID
WHERE t.CountryRegionCode = @Country_region
OPTION (OPTIMIZE FOR (@Country_region = N'US'));
END
Thanks.
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