SQL Tutorials

A Puglet

admin — Wed, 06 Jul 2011 19:40:50 +0000

pug·let / noun

A baby pug, or an unusually small pug.
Origin: Based on the word “piglet”.

Calculate all table sizes in a database

admin — Thu, 24 Feb 2011 12:01:48 +0000

Following on from the Count all rows in all tables in a database post, this script will calculate the size in kilobytes (kb) for each table in a database. Simply change the use statement to point to your database.

USE [master]
GO
SELECT obj.name AS TableName, SUM(alloc.used_pages)*8 AS [SpaceUsed(KB)]
FROM sys.objects obj
JOIN sys.indexes idx on obj.object_id = idx.object_id
JOIN sys.partitions prt on obj.object_id = prt.object_id
JOIN sys.allocation_units alloc on alloc.container_id = prt.partition_id
WHERE obj.type = ‘U’ AND idx.index_id IN (0, 1)
GROUP BY obj.name, prt.rows
ORDER BY TableName

You should get a resultset like this (I have cut my recordset down as it’s just an example)

TableName	SpaceUsed(KB)
Asset	400
AssetType	32
Company	88
CompanyVersion	0

Find Database Recovery Mode

admin — Thu, 24 Feb 2011 11:52:57 +0000

Knowing which recovery mode your database is set to is essential. The following script will output the recovery mode for your database. Just remember to replace ‘yourdatabasename‘ with your database name!

SELECT recovery_model_desc AS RecoveryMode
FROM sys.databases
WHERE name=’yourdatabasename‘

You should get a resultset like this

RecoveryMode
Simple

Count all rows in all tables in a database

admin — Thu, 24 Feb 2011 11:27:10 +0000

This script comes in very handy when you need to analyse database tables. Simply change the use statement to point to your database.

USE [master]
GO
SELECT obj.name AS TableName, prt.rows AS TotalRows
FROM sys.objects obj
JOIN sys.indexes idx on obj.object_id = idx.object_id
JOIN sys.partitions prt on obj.object_id = prt.object_id
WHERE obj.type = ‘U’ AND idx.index_id IN (0, 1)
GROUP BY obj.name, prt.rows
ORDER BY TableName

You should get a resultset like this (I have cut my recordset down as it’s just an example)

TableName	TotalRows
Asset	1142
AssetType	16
Company	424
CompanyVersion	0

List all processes running on SQL Server

admin — Tue, 22 Feb 2011 17:27:43 +0000

You might need to see all the processes that are currently running on your SQL server. This simply query will help you out!

SELECT [Database]=DB_NAME(dbid), spid, last_batch, status, hostname, loginame
FROM sys.sysprocesses
WHERE dbid = DB_ID(‘master’);

You should get a resultset like this (I have cut my resordset down as it’s just an example)

Database	spid	last_batch	status	hostname	loginame
master	21	2011-01-17 08:29:06.290	sleeping		sa
master	61	2011-02-22 15:57:06.897	sleeping	D114-LDN	D114-LDN\admin

Get database ID from MS SQL Server

admin — Tue, 22 Feb 2011 17:03:45 +0000

To get the database ID quickly simply execute this query with your database name

SELECT db_id(‘yourdatabasename’) AS DatabaseID

You should get a resultset like this

DatabaseID
11

Last Restart Time

admin — Tue, 22 Feb 2011 16:56:27 +0000

Knowing when the last time SQL was restarted is sometimes a handy figure to have. Every time your SQL Server service restarts tempdb is recreated so simply run this query and see when your SQL server was last rebooted!

SELECT create_date AS last_restart_time
FROM sys.databases
WHERE name = ‘tempdb’

You should get a resultset like this

last_restart_time
2011-01-17 08:28:41.340

How to identify your SQL Server version and edition

admin — Tue, 22 Feb 2011 15:49:19 +0000

To identify your SQL server version and edition simply create a new query and running one of the following code snippet.

SQL Server 2008

SELECT SERVERPROPERTY(‘productversion’), SERVERPROPERTY (‘productlevel’), SERVERPROPERTY (‘edition’)

SQL Server 2005

SELECT SERVERPROPERTY(‘productversion’), SERVERPROPERTY (‘productlevel’), SERVERPROPERTY (‘edition’)

SQL Server 2000

SELECT SERVERPROPERTY(‘productversion’), SERVERPROPERTY (‘productlevel’), SERVERPROPERTY (‘edition’)