Get Table Sizes and Percent of Database Size

-- Create the temp table for further querying
CREATE TABLE #temp(
rec_idint IDENTITY (1, 1),
table_namevarchar(128),
nbr_of_rowsint,
data_spacedecimal(15,2),
index_spacedecimal(15,2),
total_sizedecimal(15,2),
percent_of_dbdecimal(15,12),
db_sizedecimal(15,2))

-- Get all tables, names, and sizes
EXEC sp_msforeachtable @command1="insert into #temp(nbr_of_rows, data_space, index_space) exec sp_mstablespace '?'",
@command2="update #temp set table_name = '?' where rec_id = (select max(rec_id) from #temp)"

-- Set the total_size and total database size fields
UPDATE #temp
SET total_size = (data_space + index_space), db_size = (SELECT SUM(data_space + index_space) FROM #temp)

-- Set the percent of the total database size
UPDATE #temp
SET percent_of_db = (total_size/db_size) * 100

-- Get the data
SELECT *
FROM #temp
ORDER BY total_size DESC

-- Comment out the following line if you want to do further querying
DROP TABLE #temp