DRAG DROP
You are analyzing the performance of a database environment.
You suspect there are several missing indexes in the current database.
You need to return a prioritized list of the missing indexes on the current database.
How should you complete the Transact-SQL statement? To answer, drag the appropriate Transact-SQL
segments to the correct locations. Each Transact-SQL segment may be used once, more than once or not at
all. You may need to drag the split bar between panes or scroll to view content.
Select and Place:

Answer:

Explanation:
Box 1: sys.db_db_missing_index_group_stats
Box 2: group_handle
Example: The following query determines which missing indexes comprise a particular missing index group,
and displays their column details. For the sake of this example, the missing index group handle is 24.
SELECT migs.group_handle, mid.*
FROM sys.dm_db_missing_index_group_stats AS migs
INNER JOIN sys.dm_db_missing_index_groups AS mig
ON (migs.group_handle = mig.index_group_handle)
INNER JOIN sys.dm_db_missing_index_details AS mid
ON (mig.index_handle = mid.index_handle)
WHERE migs.group_handle = 24;
Box 3: sys.db_db_missing_index_group_stats
The sys.db_db_missing_index_group_stats table include the required columns for the subquery:
avg_total_user_cost and avg_user_impact.
Example: Find the 10 missing indexes with the highest anticipated improvement for user queries
The following query determines which 10 missing indexes would produce the highest anticipated cumulativeimprovement, in descending order, for user queries.
SELECT TOP 10 *
FROM sys.dm_db_missing_index_group_stats
ORDER BY avg_total_user_cost * avg_user_impact * (user_seeks + user_scans)DESC;