How to determine the table size of a Microsoft SQL Server database

Option 1

To determine the size of the tables of a Microsoft SQL Server database it is possible to use this SQL script:

DECLARE @table_name sysname
DECLARE table_list_cursor CURSOR FOR
SELECT TABLE_NAME from INFORMATION_SCHEMA.TABLES where TABLE_TYPE='BASE TABLE'
IF EXISTS (
SELECT * FROM   tempdb.INFORMATION_SCHEMA.COLUMNS
WHERE   table_name = '##TABLE_RES')
BEGIN     DROP TABLE ##TABLE_RES
END
CREATE TABLE ##TABLE_RES(
Name nvarchar(255),
Rows int,
reserved varchar(18),
Data varchar(18),
index_size varchar(18),
Unused varchar(18))
OPEN table_list_cursor
FETCH NEXT FROM table_list_cursor INTO @table_name
INSERT INTO ##TABLE_RES exec sp_spaceused @table_name
WHILE @@FETCH_STATUS = 0
BEGIN   FETCH NEXT FROM table_list_cursor INTO @table_name   INSERT INTO ##TABLE_RES exec sp_spaceused @table_name
END
CLOSE table_list_cursor
DEALLOCATE table_list_cursor
SELECT * from ##TABLE_RES
order by rows desc

Option 2

This script provides additional filtering if you do not want to see every table size in your database, but would rather only show those tables that have X# of place holders.

CREATE PROCEDURE GetAllTableSizes --If you change the number of [123456789] below, change the CREATE to ALTER and run the script again
AS
DECLARE @TableName VARCHAR(100)    --For storing values in the cursor
DECLARE tableCursor CURSOR
FOR
SELECT [name]
FROM dbo.sysobjects
WHERE  OBJECTPROPERTY(id, N'IsUserTable') = 1
FOR READ ONLY
CREATE TABLE #TempTable
(    tableName varchar(100),    numberofRows varchar(100),    reservedSize varchar(50),    dataSize varchar(50),    indexSize varchar(50),    unusedSize varchar(50)
)
OPEN tableCursor
FETCH NEXT FROM tableCursor INTO @TableName
WHILE (@@Fetch_Status >= 0)
BEGIN       INSERT  #TempTable        EXEC sp_spaceused @TableName    FETCH NEXT FROM tableCursor INTO @TableName
END
CLOSE tableCursor
DEALLOCATE tableCursor
SELECT *
FROM #TempTable
--Each [0123456789] is one charater, Change the [0123456789] to the disired number of dataSize charaters to be displayed. (Example XXXXXXXKB)
WHERE datasize like '[0123456789][0123456789][0123456789][0123456789][0123456789][0123456789][0123456789]%'
ORDER by datasize desc
DROP TABLE #TempTable

--Run after the above stored proceedure is created, run this to return table sizes
EXEC GetAllTableSizes