SQL Server Notes

For fans (or reluctant users) of SQL Server – here is a quick and easy way to get approximate table sizes for a database:


USE [dbname]
GO
CREATE TABLE #temp (
table_name sysname ,
row_count INT,
reserved_size VARCHAR(50),
data_size VARCHAR(50),
index_size VARCHAR(50),
unused_size VARCHAR(50))
SET NOCOUNT ON
INSERT #temp
EXEC sp_msforeachtable 'sp_spaceused ''?'''
SELECT a.table_name,
a.row_count,
COUNT(*) AS col_count,
a.data_size
FROM #temp a
INNER JOIN information_schema.columns b
ON a.table_name collate database_default
= b.table_name collate database_default
GROUP BY a.table_name, a.row_count, a.data_size
ORDER BY CAST(REPLACE(a.data_size, ' KB', '') AS integer) DESC
DROP TABLE #temp

…and a way to list all column specs…

USE [dbname]
GO
CREATE TABLE #temp (
table_name sysname ,
row_count INT,
reserved_size VARCHAR(50),
data_size VARCHAR(50),
index_size VARCHAR(50),
unused_size VARCHAR(50))
SET NOCOUNT ON
INSERT #temp
EXEC sp_msforeachtable 'sp_spaceused ''?'''
SELECT a.table_name,
b.COLUMN_NAME, b.COLUMN_DEFAULT, b.IS_NULLABLE, b.DATA_TYPE, b.CHARACTER_MAXIMUM_LENGTH
FROM #temp a
INNER JOIN information_schema.columns b
ON a.table_name collate database_default
= b.table_name collate database_default
--GROUP BY a.table_name, a.row_count, a.data_size
ORDER BY CAST(REPLACE(a.data_size, ' KB', '') AS integer) DESC
DROP TABLE #temp

For this you could also SELECT * FROM information_schema.columns

Original code from http://blog.sqlauthority.com/2007/01/10/sql-server-query-to-find-number-rows-columns-bytesize-for-each-table-in-the-current-database-find-biggest-table-in-database/