Click here to monitor SSC
SQLServerCentral is supported by Red Gate Software Ltd.
Log in  ::  Register  ::  Not logged in

Get your favorite SSC scripts directly in SSMS with the free SQL Scripts addin. Search for scripts directly from SSMS, and instantly access any saved scripts in your SSC briefcase from the favorites tab.
Download now (direct download link)

Estimating the table size...

By sql frenzy,

Well.... it's bit lengthy; I have used 6 functions to get the table size. Table size returned is in KB.


  1. fn_CalculateHeapSize: This function calculates the size of heap i.e when no clustered index has been defined.
  2. fn_ClusteredIndexSize: This function calculate the clustered index size.
  3. fn_GetNonClusteredIndexSize: This function calculate the size of all non-clustered index.
  4. fn_GetTableSize: This function combines the result of above functions to give the final results.
  5. fn_getIndexSpace: A common function used for calculation in above functions.
  6. fn_GetLeafLevelIndexSpace: A common function used for calculation in above functions.
  • Usage: select dbo.fn_GetTableSize('tablename')


I have not considered the LOB cols. in my calculations; also this is an estimation of a table size as given in BOL "Estimating the table size"


Total article views: 1663 | Views in the last 30 days: 5
Related Articles

lag function calculation

llag function calculation


Calculate Age

This a function by which you can calculate the age of something.


Problem Using the Aggregate Function with Calculated Measures

Recently, I was working with a client we were working on a calculated measure using the aggregate fu...


Need a function to Calculate Next Business Days

Need a function to calculate next business day considering holiday list and also saturday and sunday...


Calculate age - Most easiest way

This function is used to calculate the age from the given date.


Join the most active online SQL Server Community

SQL knowledge, delivered daily, free:

Email address:  

You make SSC a better place

As a member of SQLServerCentral, you get free access to loads of fresh content: thousands of articles and SQL scripts, a library of free eBooks, a weekly database news roundup, a great Q & A platform… And it’s our huge, buzzing community of SQL Server Professionals that makes it such a success.

Join us!

Steve Jones

Already a member? Jump in:

Email address:   Password:   Remember me: Forgotten your password?
Steve Jones