Create Optimize for Ad-Hoc Workloads should be Enabled.sql

SQLChecks/Optimize for Ad-Hoc Workloads should be Enabled.sql

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+		DECLARE
+			@AdditionalInfo				AS XML ,
+			@AdhocRatio					AS DECIMAL(3,2) ,
+			@OptimizeForAdhocWorkloads	AS BIT;
+
+		SELECT
+			@AdhocRatio	= CAST (SUM (CASE WHEN objtype = N'Adhoc' AND usecounts = 1 THEN CAST (size_in_bytes AS DECIMAL(19,2)) ELSE 0 END) / SUM (CAST (size_in_bytes AS DECIMAL(19,2))) AS DECIMAL(3,2))
+		FROM
+			sys.dm_exec_cached_plans;
+
+		SELECT
+			@OptimizeForAdhocWorkloads = CAST (value_in_use AS BIT)
+		FROM
+			sys.configurations
+		WHERE
+			[name] = N'optimize for ad hoc workloads';
+
+		INSERT INTO
+			#Checks
+		(
+			CheckId ,
+			Title ,
+			RequiresAttention ,
+			CurrentStateImpact ,
+			RecommendationEffort ,
+			RecommendationRisk ,
+			AdditionalInfo
+		)
+		SELECT
+			CheckId					= {CheckId} ,
+			Title					= N'{CheckTitle}' ,
+			RequiresAttention		=
+				CASE
+					WHEN @AdditionalInfo IS NULL
+						THEN 0
+					ELSE
+						1
+				END ,
+			CurrentStateImpact		= 1 ,	-- Low
+			RecommendationEffort	= 1 ,	-- Low
+			RecommendationRisk		= 1 ,	-- Low
+			AdditionalInfo			= @AdditionalInfo;