Solved

SQL Statistics

Posted on 2004-04-26
5
797 Views
Last Modified: 2013-11-13
I want to retrieve the statistics on a table and store them in a different table for historical purposes.
I need things like Row count etc but I do not want to do a count(*) if these values are stored somewhere.
I know one can use DBCC SHOW_STATISTICS but does anyone have any code that simplifies this - in other words loops through all the user tables and get the statistics for them?
or does anyone know where these values are stored.

Thanks
Kathy
0
Comment
Question by:azrakdragon
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 9

Expert Comment

by:_ys_
ID: 10920142
A basic query would be:

SELECT      name, rows
FROM      sysIndexes
WHERE      indid = 0

This returns the table-name and rowcount. Keep in mind that the row count is not guaranteed to be updated real time.
0
 

Author Comment

by:azrakdragon
ID: 10935955
Hi ys

Would this only apply to tables that have indexes on them??
0
 
LVL 9

Expert Comment

by:_ys_
ID: 10936510
I can't imagine a table that doesn't have at least one. I mean when you define a PRIMARY KEY an index (usually clustered) is created on your behalf. Unless your tables don't have a PRIMARY KEY defined, and I would advise against it.
0
 

Author Comment

by:azrakdragon
ID: 10937135
I understand what you are saying, perhaps I should have mentioned I want this information for a data warehouse. Unique columns are defined by Unique indexes but I cannot guarantee that every single table has an index especially our aggregated tables.

What I am ultimately looking for is the information displayed on the "Taskpad" view under Table Info on a database. Surely this kind of information is calculated and stored somewhere or is it calculated on the fly??
Where or how can I get this kind of information.

Regards
Kathy
0
 
LVL 9

Accepted Solution

by:
_ys_ earned 500 total points
ID: 10937509
In that case COUNT(*) is what you gotta do.

If you're using MS SQL, here's a fully functional script:

---------------x---------------
CREATE TABLE dbo.table_count
(
       table_name NVARCHAR(128) NOT NULL PRIMARY KEY
      ,row_count INTEGER NOT NULL
)

INSERT      dbo.table_count
EXEC      sp_msForEachTable 'SELECT ''?'', COUNT(*) FROM ?'

SELECT      *
FROM      dbo.table_count

DROP TABLE dbo.table_count
---------------x---------------
0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The SignAloud Glove is capable of translating American Sign Language signs into text and audio.
Part One of the two-part Q&A series with MalwareTech.
With the power of JIRA, there's an unlimited number of ways you can customize it, use it and benefit from it. With that in mind, there's bound to be things that I wasn't able to cover in this course. With this summary we'll look at some places to go…
Six Sigma Control Plans

632 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question