How to spot a big table

-
There are plenty of tools out in the wonderful world of the web to provide you with this very detail of information. Do you need it? Well Gui's can be fun and down right useful when in the right environment. In my world I use software to help keep track of my LIVE/Production systems but, what about those other systems that are not really live, but are development and test. Sometimes you start to run out of room, and you wonder why... sometimes you want a quick count of the tables that either consume the most space in terms of disk, or rows... How can you do it quickly?

The following snippet is not groundbreaking, but it does provide a valuable service. More importantly it answer the questions of... which table is bigger... which tables are unused. etc, etc. You can even take this to the next level and keep track of which tables grow the most by surveying all your databases. And if you really like GUIs you can graph a trend on which tables grow the most.. stuff that is already available by vendors for thousands a month.. not groundbreaking like I said earlier but certainly useful and a good exercise to practice. Once you have it you can save a ton of Money on the GUIs out there...

Below I took advantage of using the undocumented stored procedure sp_msforeachtable, and the global variable '?'. Essentially for each table in the database run this sproc (stored procedure).


--By: Francisco
--Date: 10/27/2006
--Purpose: Find Out wich Tables Yield the most space.
IF EXISTS (select * from TEMPDB.dbo.sysobjects WITH(NOLOCK) where id = object_id(N'TEMPDB.dbo.#SpaceUsed')) BEGIN
DROP TABLE #SpaceUsed
END
CREATE TABLE #SpaceUsed (TableName VARCHAR(255),Rows INT, Reserved Varchar(255), Data VarChar(255), Index_Size VarChar(255), Unused VarChar(255))
INSERT INTO #SpaceUsed (TableName, Rows, Reserved, Data, Index_Size, UnUsed)
EXEC sp_msforeachtable 'EXEC sp_spaceused ''?'''


SELECT TableName, Rows, Reserved, Data, Index_Size, Unused FROM #SpaceUsed
ORDER BY CAST(REPLACE (DATA, 'KB', '') AS INT) DESC

Comments

Post a Comment

Popular posts from this blog

Service Broker and External Activator for Sql Server...

-
I ntroduced in Sql Server 2005, Microsoft's Service Broker is a Messaging Queue for Sql Server.  You can audit tables, trigger events, and even call web services (Using the External Activator). Follow this excellent tutorial by Dev Kimchi which helps you step by step and clearly explain how to setup your Service Broker messaging queue. To get started with the external activator you will require the version for the version of Sql Server you are running, click on any of the Microsoft download links and follow the install instructions: Microsoft® SQL Server® 2012 Feature Pack Microsoft® SQL Server® 2014 Feature Pack One last thing before you get frustrated installing the External Activator service on a remote server.  At least for the 2012 version, it still required .Net 3.5 installed on the destination computer/server.  If you are trying to install on a Windows 2012 server follow this helpful guide on how to get .Net 3.5 installed now that the latest packs have been releas
Read more

Lighting Quick Table RowCounts for your Tables

-
Image
If you are familiar with TSQL and want to get a row count from your tables you might be tempted to run a simple Select count(*) from myTable This however can be a lengthy wait if you have millions and millions of records. Not to mention the potential impact on a production system. Instead consider selecting your rowcounts from your system tables SELECT OBJECT_NAME(id), ROWS, indid FROM sysindexes WHERE indid < 2 AND OBJECT_NAME(id) IN ('myTableName') Looking forward beyond Sql Server 2005 and beyond the following select should be used and will provide you with the needed information as system tables access may be depracated SELECT DISTINCT OBJECT_NAME(P.object_id) AS [Name], ROWS FROM sys.indexes I INNER JOIN sys.partitions P ON P.object_id = I.object_id AND P.index_id = I.index_id WHERE I.index_id < 2 AND OBJECT_NAME(P.object_id) IN ('myTableName') So why am I searching for index smaller than 2? In short from the article below you'll find that pure data p
Read more

List to Table

-
E very now and again, a developer will be faced with the task of referincing a List of id's. It's typically irresistable to want to push all these IDs into a single field. If you're searching then you may end up considering a cursor... for that I decided to write the following function... it's like other Tsql functions that push a list to a table, but this is my take on it... I release the code here with out warranty. CREATE FUNCTION udfListToTable (@HList VarChar(2000), @Delimiter CHAR(1)) RETURNS @ListTable TABLE (Field1 VARCHAR(6)) AS BEGIN --By: Francisco Tapia --Date: 2/1/2005 --Purpose: To convert a Comma delimited text to a Temp Variable table To help avoid dynamic sql -- Instead you can join the temp table or use it in your where clause if a field is IN the subquery DECLARE @FieldText as VarChar(6) IF RIGHT(RTRIM(@HLIST),1) <>@Delimiter SET @HList = @HList + @Delimiter WHILE CHARINDEX(@Delimiter, @HList) > 0 BEGIN
Read more