Script-out-all-indexes-in-a-database.sql

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SELECT 
    DB_NAME() AS database_name,
    sc.name + N'.' + t.name AS table_name,
    (SELECT MAX(user_reads) 
        FROM (VALUES (last_user_seek), (last_user_scan), (last_user_lookup)) AS value(user_reads)) AS last_user_read,
    last_user_update,
    CASE si.index_id WHEN 0 THEN N'/* No create statement (Heap) */'
    ELSE 
        CASE is_primary_key WHEN 1 THEN
            N'ALTER TABLE ' + QUOTENAME(sc.name) + N'.' + QUOTENAME(t.name) + N' ADD CONSTRAINT ' + QUOTENAME(si.name) + N' PRIMARY KEY ' +
                CASE WHEN si.index_id > 1 THEN N'NON' ELSE N'' END + N'CLUSTERED '
            ELSE N'CREATE ' + 
                CASE WHEN si.is_unique = 1 then N'UNIQUE ' ELSE N'' END +
                CASE WHEN si.index_id > 1 THEN N'NON' ELSE N'' END + N'CLUSTERED ' +
                N'INDEX ' + QUOTENAME(si.name) + N' ON ' + QUOTENAME(sc.name) + N'.' + QUOTENAME(t.name) + N' '
        END +
        /* key def */ N'(' + key_definition + N')' +
        /* includes */ CASE WHEN include_definition IS NOT NULL THEN 
            N' INCLUDE (' + include_definition + N')'
            ELSE N''
        END +
        /* filters */ CASE WHEN filter_definition IS NOT NULL THEN 
            N' WHERE ' + filter_definition ELSE N''
        END +
        /* with clause - compression goes here */
        CASE WHEN row_compression_partition_list IS NOT NULL OR page_compression_partition_list IS NOT NULL 
            THEN N' WITH (' +
                CASE WHEN row_compression_partition_list IS NOT NULL THEN
                    N'DATA_COMPRESSION = ROW ' + CASE WHEN psc.name IS NULL THEN N'' ELSE + N' ON PARTITIONS (' + row_compression_partition_list + N')' END
                ELSE N'' END +
                CASE WHEN row_compression_partition_list IS NOT NULL AND page_compression_partition_list IS NOT NULL THEN N', ' ELSE N'' END +
                CASE WHEN page_compression_partition_list IS NOT NULL THEN
                    N'DATA_COMPRESSION = PAGE ' + CASE WHEN psc.name IS NULL THEN N'' ELSE + N' ON PARTITIONS (' + page_compression_partition_list + N')' END
                ELSE N'' END
            + N')'
            ELSE N''
        END +
        /* ON where? filegroup? partition scheme? */
        ' ON ' + CASE WHEN psc.name is null 
            THEN ISNULL(QUOTENAME(fg.name),N'')
            ELSE psc.name + N' (' + partitioning_column.column_name + N')' 
            END
        + N';'
    END AS index_create_statement,
    si.index_id,
    si.name AS index_name,
    partition_sums.reserved_in_row_GB,
    partition_sums.reserved_LOB_GB,
    partition_sums.row_count,
    stat.user_seeks,
    stat.user_scans,
    stat.user_lookups,
    user_updates AS queries_that_modified,
    partition_sums.partition_count,
    si.allow_page_locks,
    si.allow_row_locks,
    si.is_hypothetical,
    si.has_filter,
    si.fill_factor,
    si.is_unique,
    ISNULL(pf.name, '/* Not partitioned */') AS partition_function,
    ISNULL(psc.name, fg.name) AS partition_scheme_or_filegroup,
    t.create_date AS table_created_date,
    t.modify_date AS table_modify_date
FROM sys.indexes AS si
JOIN sys.tables AS t ON si.object_id=t.object_id
JOIN sys.schemas AS sc ON t.schema_id=sc.schema_id
LEFT JOIN sys.dm_db_index_usage_stats AS stat ON 
    stat.database_id = DB_ID() 
    and si.object_id=stat.object_id 
    and si.index_id=stat.index_id
LEFT JOIN sys.partition_schemes AS psc ON si.data_space_id=psc.data_space_id
LEFT JOIN sys.partition_functions AS pf ON psc.function_id=pf.function_id
LEFT JOIN sys.filegroups AS fg ON si.data_space_id=fg.data_space_id
/* Key list */ OUTER APPLY ( SELECT STUFF (
    (SELECT N', ' + QUOTENAME(c.name) +
        CASE ic.is_descending_key WHEN 1 then N' DESC' ELSE N'' END
    FROM sys.index_columns AS ic 
    JOIN sys.columns AS c ON 
        ic.column_id=c.column_id  
        and ic.object_id=c.object_id
    WHERE ic.object_id = si.object_id
        and ic.index_id=si.index_id
        and ic.key_ordinal > 0
    ORDER BY ic.key_ordinal FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'')) AS keys ( key_definition )
/* Partitioning Ordinal */ OUTER APPLY (
    SELECT MAX(QUOTENAME(c.name)) AS column_name
    FROM sys.index_columns AS ic 
    JOIN sys.columns AS c ON 
        ic.column_id=c.column_id  
        and ic.object_id=c.object_id
    WHERE ic.object_id = si.object_id
        and ic.index_id=si.index_id
        and ic.partition_ordinal = 1) AS partitioning_column
/* Include list */ OUTER APPLY ( SELECT STUFF (
    (SELECT N', ' + QUOTENAME(c.name)
    FROM sys.index_columns AS ic 
    JOIN sys.columns AS c ON 
        ic.column_id=c.column_id  
        and ic.object_id=c.object_id
    WHERE ic.object_id = si.object_id
        and ic.index_id=si.index_id
        and ic.is_included_column = 1
    ORDER BY c.name FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'')) AS includes ( include_definition )
/* Partitions */ OUTER APPLY ( 
    SELECT 
        COUNT(*) AS partition_count,
        CAST(SUM(ps.in_row_reserved_page_count)*8./1024./1024. AS NUMERIC(32,1)) AS reserved_in_row_GB,
        CAST(SUM(ps.lob_reserved_page_count)*8./1024./1024. AS NUMERIC(32,1)) AS reserved_LOB_GB,
        SUM(ps.row_count) AS row_count
    FROM sys.partitions AS p
    JOIN sys.dm_db_partition_stats AS ps ON
        p.partition_id=ps.partition_id
    WHERE p.object_id = si.object_id
        and p.index_id=si.index_id
    ) AS partition_sums
/* row compression list by partition */ OUTER APPLY ( SELECT STUFF (
    (SELECT N', ' + CAST(p.partition_number AS VARCHAR(32))
    FROM sys.partitions AS p
    WHERE p.object_id = si.object_id
        and p.index_id=si.index_id
        and p.data_compression = 1
    ORDER BY p.partition_number FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'')) AS row_compression_clause ( row_compression_partition_list )
/* data compression list by partition */ OUTER APPLY ( SELECT STUFF (
    (SELECT N', ' + CAST(p.partition_number AS VARCHAR(32))
    FROM sys.partitions AS p
    WHERE p.object_id = si.object_id
        and p.index_id=si.index_id
        and p.data_compression = 2
    ORDER BY p.partition_number FOR XML PATH(''), TYPE).value('.', 'NVARCHAR(MAX)'),1,2,'')) AS page_compression_clause ( page_compression_partition_list )
WHERE 
    si.type IN (0,1,2) /* heap, clustered, nonclustered */
ORDER BY table_name, si.index_id
    OPTION (RECOMPILE);
GO

Thanks for the script @LitKnd for the script. Forked it to add an IF check before the create/alter statements.

This is very useful and I thank you for posting it but, caveat emptor... you do take the time to figure out what the Fill Factor is (which is incredibly important) but then you don't use it in the resulting CREATE INDEX script. What else is missing?

Hi @LitKnd! I tried to run in a SQL Server 2017 instance and clustered columnstore indexes are not showing.

Thanks @LitKnd, this is a very useful script and helped me today.
Some optimization points I see is to add:

• the table name in the comment /* No create statement (Heap) */
• a parameter to add the DROP statement
• a parameter to add GO statement