Table Information View -- No Cursors!

One of the most frequent request I get is for a procedure that can return sp_SpaceUsed type information for every table in a database. This is easy enough to do with cursors and dynamic SQL, but after looking at how sp_SpaceUsed worked and how SMO gets the same information, I decided that I could write it without either.

Even better, one I wrote it though, I realized that it could easily be rewritten as a view. Now I could reuse it by joining it with other tables and views in new queries or procedures whenever I wanted. Enjoy!


/*
vwTableInfo - Table Information View

This view display space and storage information for every table in the database.
Columns are:
Schema
Name
Owner may be different from Schema)
Columns count of the max number of columns ever used)
HasClusIdx 1 if table has a clustered index, 0 otherwise
RowCount
IndexKB space used by the table's indexes
DataKB space used by the table's data

16-March-2008, RBarryYoung@gmail.com
*/
--CREATE VIEW vwTableInfo
-- AS
SELECT SCHEMA_NAME(tbl.schema_id) as [Schema]
, tbl.Name
, Coalesce((Select pr.name
From sys.database_principals pr
Where pr.principal_id = tbl.principal_id)
, SCHEMA_NAME(tbl.schema_id)) as [Owner]
, tbl.max_column_id_used as [Columns]
, CAST(CASE idx.index_id WHEN 1 THEN 1 ELSE 0 END AS bit) AS [HasClusIdx]
, Coalesce( ( select sum (spart.rows) from sys.partitions spart
where spart.object_id = tbl.object_id and spart.index_id < 2), 0) AS [RowCount]

, Coalesce( (Select Cast(v.low/1024.0 as float)
* SUM(a.used_pages - CASE WHEN a.type <> 1 THEN a.used_pages WHEN p.index_id < 2 THEN a.data_pages ELSE 0 END)
FROM sys.indexes as i
JOIN sys.partitions as p ON p.object_id = i.object_id and p.index_id = i.index_id
JOIN sys.allocation_units as a ON a.container_id = p.partition_id
where i.object_id = tbl.object_id )
, 0.0) AS [IndexKB]

, Coalesce( (Select Cast(v.low/1024.0 as float)
* SUM(CASE WHEN a.type <> 1 THEN a.used_pages WHEN p.index_id < 2 THEN a.data_pages ELSE 0 END)
FROM sys.indexes as i
JOIN sys.partitions as p ON p.object_id = i.object_id and p.index_id = i.index_id
JOIN sys.allocation_units as a ON a.container_id = p.partition_id
where i.object_id = tbl.object_id)
, 0.0) AS [DataKB]
, tbl.create_date, tbl.modify_date

FROM sys.tables AS tbl
INNER JOIN sys.indexes AS idx ON (idx.object_id = tbl.object_id and idx.index_id < 2)
INNER JOIN master.dbo.spt_values v ON (v.number=1 and v.type='E')