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)

Swiss Cheese!

By John Esraelo,

Hello all,

Have you ever wondered what happened to the numbers' sequence having gaps?

If you have a table with a numeric columns (non-identity) that may have been used for ID, or product number, etc, then there are times that you as a developer would like to know if there are any gaps in the sequence and if those might have been caused and generated by a bug or a faulty application code.

Here is a simple way of determining that.

The script in here will accept ANY fully qualified table name, the 4 part naming of remote server and 3 part naming if local server  that you know, and the column name and viola.

You will get a list of the gaps.  Either single numbers, or range of numbers.

Hope this can be helpful.



Total article views: 956 | Views in the last 30 days: 1
Related Articles

random Number

Unique Number


Random number generator

Random numbers


Missing numbers in a series

Missing Numbers


Convert exponential Number to non-exponential numbers...

Convert exponential Number to non-exponential numbers...


Sorting issue for numbers

Numbers not properly sorting

sql script    

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