Missing indexes -- revised script

Thanks to Darren Myher (https://DarrenMyher.com) for a few intelligent tweaks as well as some useful formatting for this revised version. 

UPDATED 12/9/24 for SQL Azure

UPDATED 4/23/2025 because people have WEIRD naming conventions

--Use this SQL Script to identify indexes that if added could help improve performance.

--IMPORTANT: Do not BLINDLY implement the script recommendations.  For example, if the SAME TABLE is mentioned multiple times, then

--           it may be better to COMBINE the recommendations of multiple statements into a single one.

--           see later posting on this blog for detail

DECLARE @Edition varchar(50)

SET @Edition = CONVERT(varchar(50), SERVERPROPERTY('Edition'))

DECLARE @bEnterpriseEdition bit

IF LEFT(@Edition, 9) in ('Enterpris', 'Developer', 'SQL Azure')  

SET @bEnterpriseEdition = 1

SELECT

      'CREATE INDEX [IX_'

            + REPLACE(obj.Name, ' ', '') +'_'

            + replace(replace(replace (equality_columns, '[', ''),']',''),', ','_')

            + '] ON '

            + sch.name COLLATE SQL_Latin1_General_CP1_CI_AS + '.' + QuoteName(obj.name)

            + ' ('

            + equality_columns

            + CASE WHEN inequality_columns IS NULL

                   THEN ''

                   ELSE ',' +  inequality_columns

              END

            + ')'

            + CASE WHEN included_columns IS NOT NULL

                   THEN ' INCLUDE (' + ISNULL(included_columns,'') + ') '

                   ELSE ''

              END

            + CASE WHEN @bEnterpriseEdition = 1

                   THEN ' WITH (online = ON)'

                   ELSE ''

              END

            + ' -- ' + CONVERT (varchar, avg_user_impact) + '% anticipated impact'

      FROM sys.dm_db_missing_index_details mid

        JOIN sys.dm_db_missing_index_groups mig

            ON mid.index_handle = mig.index_handle

        JOIN sys.dm_db_missing_index_group_stats migs

            ON migs.group_handle = mig.index_group_handle

        JOIN sys.objects obj

            ON obj.object_id = mid.object_id

        JOIN sys.schemas sch

            ON obj.schema_id = sch.schema_id

      WHERE

        database_id = db_id()

        AND avg_user_impact > 60

        AND equality_columns IS NOT NULL

      ORDER BY

        obj.name

        , equality_columns

        , inequality_columns

        , datalength(included_columns)