Die Antwort von @ marc_s ist sehr gut und ich benutze sie seit einigen Jahren. Ich habe jedoch festgestellt, dass das Skript Daten in einigen Columnstore-Indizes vermisst und kein vollständiges Bild anzeigt. Wenn Sie beispielsweise SUM(TotalSpace)
das Skript mit der Eigenschaft "Gesamtspeicherdatenbank" in Management Studio vergleichen, stimmen die Zahlen in meinem Fall nicht überein (Management Studio zeigt größere Zahlen an). Ich habe das Skript geändert, um dieses Problem zu beheben, und es ein wenig erweitert:
select
tables.[name] as table_name,
schemas.[name] as schema_name,
isnull(db_name(dm_db_index_usage_stats.database_id), 'Unknown') as database_name,
sum(allocation_units.total_pages) * 8 as total_space_kb,
cast(round(((sum(allocation_units.total_pages) * 8) / 1024.00), 2) as numeric(36, 2)) as total_space_mb,
sum(allocation_units.used_pages) * 8 as used_space_kb,
cast(round(((sum(allocation_units.used_pages) * 8) / 1024.00), 2) as numeric(36, 2)) as used_space_mb,
(sum(allocation_units.total_pages) - sum(allocation_units.used_pages)) * 8 as unused_space_kb,
cast(round(((sum(allocation_units.total_pages) - sum(allocation_units.used_pages)) * 8) / 1024.00, 2) as numeric(36, 2)) as unused_space_mb,
count(distinct indexes.index_id) as indexes_count,
max(dm_db_partition_stats.row_count) as row_count,
iif(max(isnull(user_seeks, 0)) = 0 and max(isnull(user_scans, 0)) = 0 and max(isnull(user_lookups, 0)) = 0, 1, 0) as no_reads,
iif(max(isnull(user_updates, 0)) = 0, 1, 0) as no_writes,
max(isnull(user_seeks, 0)) as user_seeks,
max(isnull(user_scans, 0)) as user_scans,
max(isnull(user_lookups, 0)) as user_lookups,
max(isnull(user_updates, 0)) as user_updates,
max(last_user_seek) as last_user_seek,
max(last_user_scan) as last_user_scan,
max(last_user_lookup) as last_user_lookup,
max(last_user_update) as last_user_update,
max(tables.create_date) as create_date,
max(tables.modify_date) as modify_date
from
sys.tables
left join sys.schemas on schemas.schema_id = tables.schema_id
left join sys.indexes on tables.object_id = indexes.object_id
left join sys.partitions on indexes.object_id = partitions.object_id and indexes.index_id = partitions.index_id
left join sys.allocation_units on partitions.partition_id = allocation_units.container_id
left join sys.dm_db_index_usage_stats on tables.object_id = dm_db_index_usage_stats.object_id and indexes.index_id = dm_db_index_usage_stats.index_id
left join sys.dm_db_partition_stats on tables.object_id = dm_db_partition_stats.object_id and indexes.index_id = dm_db_partition_stats.index_id
group by schemas.[name], tables.[name], isnull(db_name(dm_db_index_usage_stats.database_id), 'Unknown')
order by 5 desc
Hoffe, es wird für jemanden hilfreich sein. Dieses Skript wurde gegen große TB-weite Datenbanken mit Hunderten verschiedener Tabellen, Indizes und Schemata getestet.