Find Table Size of the Database in Microsoft SQL Server

Very useful script for DBA to know the each table size of a specified database.

SQL Command: 

DECLARE
@id int,
@pages int,
@objname varchar(750)

SET NOCOUNT ON

CREATE TABLE #tblSize
(
Name varchar (100),
Rows varchar (100),
Reserved varchar (100),
Data varchar (100),
Index_Size varchar (100),
Unused varchar (100)
)

CREATE TABLE #spt_space
(
rows int null,
reserved dec(15) null,
data dec(15) null,
indexp dec(15) null,
unused dec(15) null
)

-- declare main cursor to get first user table name from sysobjects
DECLARE TabNameCur CURSOR FOR
SELECT id, name
FROM dbo.sysobjects
WHERE xtype = 'u'
ORDER BY name


OPEN TabNameCur
FETCH TabNameCur INTO @id, @objname

WHILE @@FETCH_STATUS = 0
BEGIN

TRUNCATE TABLE #spt_space

INSERT INTO #spt_space (reserved)
SELECT sum(reserved)
FROM sysindexes
WHERE indid in (0, 1, 255)
AND id = @id

SELECT @pages = sum(dpages)
FROM sysindexes
WHERE indid < 2
AND id = @id

SELECT @pages = @pages + isnull(sum(used), 0)
FROM sysindexes
WHERE indid = 255
AND id = @id

UPDATE #spt_space
SET data = @pages

UPDATE #spt_space
SET indexp = (SELECT sum(used)
FROM sysindexes
WHERE indid in (0, 1, 255)
AND id = @id) - data

UPDATE #spt_space
SET unused = reserved
- (SELECT sum(used)
FROM sysindexes
WHERE indid in (0, 1, 255)
AND id = @id)

UPDATE #spt_space
SET rows = i.rows
FROM sysindexes i
WHERE i.indid < 2
AND i.id = @id

--This step required as 'convert.../1000' cannot be used with varchars
INSERT INTO #tblSize
SELECT name = object_name(@id),
rows, --= convert(char(11), rows),
reserved = convert(decimal (8,2), (reserved * d.low / 1024.)/1000),
data = convert(decimal (8,2), (data * d.low / 1024.)/1000),
index_size = convert(decimal (8,2), (indexp * d.low / 1024.)/1000),
unused = convert(decimal (8,2), (unused * d.low / 1024.)/1000)
FROM #spt_space, master.dbo.spt_values d
WHERE d.number = 1
AND d.type = 'E'

FETCH NEXT FROM TabNameCur INTO @id, @objname
END

-- close & deallocate main cursor
CLOSE TabNameCur
DEALLOCATE TabNameCur


SELECT Name, Rows,
Reserved + ' MB' as Reserved,
Data + ' MB' as Data,
index_size + ' MB' as Index_Size,
unused + ' MB' as Unused
FROM #tblSize