USE master
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
GO
 
WITH XMLNAMESPACES (DEFAULT 'http://schemas.microsoft.com/sqlserver/2004/07/showplan')
, PlanMissingIndexes
AS (SELECT query_plan, usecounts
    FROM sys.dm_exec_cached_plans cp
    CROSS APPLY sys.dm_exec_query_plan(cp.plan_handle) qp
    WHERE qp.query_plan.exist('//MissingIndexes') = 1)
, MissingIndexes
AS (SELECT stmt_xml.value('(QueryPlan/MissingIndexes/MissingIndexGroup/MissingIndex/@Database)[1]', 'sysname') AS DatabaseName,
           stmt_xml.value('(QueryPlan/MissingIndexes/MissingIndexGroup/MissingIndex/@Schema)[1]', 'sysname') AS SchemaName,
           stmt_xml.value('(QueryPlan/MissingIndexes/MissingIndexGroup/MissingIndex/@Table)[1]', 'sysname') AS TableName,
           stmt_xml.value('(QueryPlan/MissingIndexes/MissingIndexGroup/@Impact)[1]', 'float') AS Impact,
           ISNULL(CAST(stmt_xml.value('(@StatementSubTreeCost)[1]', 'VARCHAR(128)') AS FLOAT), 0) AS Cost,
           pmi.usecounts UseCounts,
           STUFF((SELECT DISTINCT ', ' + c.value('(@Name)[1]', 'sysname')
					FROM stmt_xml.nodes('//ColumnGroup') AS t(cg)
					CROSS APPLY cg.nodes('Column') AS r(c)
					WHERE cg.value('(@Usage)[1]', 'sysname') = 'EQUALITY'
					FOR XML PATH('')),1,2,''
                ) AS equality_columns,
           STUFF(( SELECT DISTINCT ', ' + c.value('(@Name)[1]', 'sysname')
					FROM stmt_xml.nodes('//ColumnGroup') AS t(cg)
					CROSS APPLY cg.nodes('Column') AS r(c)
					WHERE cg.value('(@Usage)[1]', 'sysname') = 'INEQUALITY'
					FOR XML PATH('')),1,2,''
                ) AS inequality_columns,
           STUFF((SELECT DISTINCT ', ' + c.value('(@Name)[1]', 'sysname')
					FROM stmt_xml.nodes('//ColumnGroup') AS t(cg)
					CROSS APPLY cg.nodes('Column') AS r(c)
					WHERE cg.value('(@Usage)[1]', 'sysname') = 'INCLUDE'
					FOR XML PATH('')),1,2,''
                ) AS include_columns,
           query_plan,
           stmt_xml.value('(@StatementText)[1]', 'varchar(4000)') AS sql_text
    FROM PlanMissingIndexes pmi
    CROSS APPLY query_plan.nodes('//StmtSimple') AS stmt(stmt_xml)
    WHERE stmt_xml.exist('QueryPlan/MissingIndexes') = 1)
 
SELECT TOP 200
       DatabaseName,
       SchemaName,
       TableName,
       equality_columns,
       inequality_columns,
       include_columns,
       UseCounts,
       Cost,
       Cost * UseCounts [AggregateCost],
       Impact,
       query_plan
FROM MissingIndexes
WHERE DatabaseName = '[arizona]' 
AND TableName = '[PH_prescription_line]'
ORDER BY Cost * UseCounts DESC;