How to get Dynamics 365 Finance and Operations table sizes
select S.name+ '.'+ T.name as [table]
, (select SUM(rows) from sys.partitions where object_id = tmp.object_id and index_id in (1, 0) ) AS [rows]
, data_MB, index_MB, allocated_MB, unused_MB
from (select part.object_id
,cast(sum(alloc.data_pages* 8)/ 1024.00 as numeric(16, 2)) as data_MB
,cast(sum((alloc.used_pages- alloc.data_pages)* 8)/ 1024.00 as numeric(16, 2)) as index_MB
,cast(sum(alloc.total_pages* 8)/ 1024.00 as numeric(16, 2)) as allocated_MB
,cast(sum((alloc.total_pages - alloc.used_pages)* 8)/ 1024.00 as numeric(16, 2)) as unused_MB
from sys.partitions part
join sys.allocation_units alloc on part.partition_id = alloc.container_id
group by part.object_id) as tmp
join sys.tables T on T.object_id = tmp.object_id
join sys.schemas AS S on S.schema_id = T.schema_id
where T.type = 'U' --not counting system tables
--and T.name like '%ledger%' --table name filter
--and S.name <> 'dbo' --checking for non DBO schema
order by allocated_MB desc
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