This is a standard missing index script that includes a create statement.
Run this script against any database. Create Statement column can be copied to a new window to create the missing index
-- Missing Indexes in current database by Index Advantage
SELECT user_seeks * avg_total_user_cost * ( avg_user_impact * 0.01 ) AS [index_advantage] ,
migs.last_user_seek ,
mid.[statement] AS [Database.Schema.Table] ,
mid.equality_columns ,
mid.inequality_columns ,
mid.included_columns ,
migs.unique_compiles ,
migs.user_seeks ,
migs.avg_total_user_cost ,
migs.avg_user_impact ,
N'CREATE NONCLUSTERED INDEX [IX_' + SUBSTRING(mid.statement,
CHARINDEX('.',
mid.statement,
CHARINDEX('.',
mid.statement)
+ 1) + 2,
LEN(mid.statement) - 3
- CHARINDEX('.',
mid.statement,
CHARINDEX('.',
mid.statement)
+ 1) + 1) + '_'
+ REPLACE(REPLACE(REPLACE(CASE WHEN mid.equality_columns IS NOT NULL
AND mid.inequality_columns IS NOT NULL
AND mid.included_columns IS NOT NULL
THEN mid.equality_columns + '_'
+ mid.inequality_columns
+ '_Includes'
WHEN mid.equality_columns IS NOT NULL
AND mid.inequality_columns IS NOT NULL
AND mid.included_columns IS NULL
THEN mid.equality_columns + '_'
+ mid.inequality_columns
WHEN mid.equality_columns IS NOT NULL
AND mid.inequality_columns IS NULL
AND mid.included_columns IS NOT NULL
THEN mid.equality_columns + '_Includes'
WHEN mid.equality_columns IS NOT NULL
AND mid.inequality_columns IS NULL
AND mid.included_columns IS NULL
THEN mid.equality_columns
WHEN mid.equality_columns IS NULL
AND mid.inequality_columns IS NOT NULL
AND mid.included_columns IS NOT NULL
THEN mid.inequality_columns
+ '_Includes'
WHEN mid.equality_columns IS NULL
AND mid.inequality_columns IS NOT NULL
AND mid.included_columns IS NULL
THEN mid.inequality_columns
END, ', ', '_'), ']', ''), '[', '') + '] '
+ N'ON ' + mid.[statement] + N' (' + ISNULL(mid.equality_columns, N'')
+ CASE WHEN mid.equality_columns IS NULL
THEN ISNULL(mid.inequality_columns, N'')
ELSE ISNULL(', ' + mid.inequality_columns, N'')
END + N') ' + ISNULL(N'INCLUDE (' + mid.included_columns + N');',
';') AS CreateStatement
FROM sys.dm_db_missing_index_group_stats AS migs WITH ( NOLOCK )
INNER JOIN sys.dm_db_missing_index_groups AS mig WITH ( NOLOCK ) ON migs.group_handle = mig.index_group_handle
INNER JOIN sys.dm_db_missing_index_details AS mid WITH ( NOLOCK ) ON mig.index_handle = mid.index_handle
WHERE mid.database_id = DB_ID()
ORDER BY index_advantage DESC; 
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