Re-Incrementing Identity Columns

Kenneth Fisher explains how to change the increment value of a table which already has an identity column:

The first thing to do is remember that all tables are partitioned. Sort of. What we think of as non-partitioned tables are really just tables with a single partition. Every table is listed in sys.partitions and in fact you can use it to quickly see how many rows there are in a table. Since there is no partition scheme/function we can’t do splits or merges, but we can do a SWITCH.

What we are going to do is create a new, virtually identical table, then switch the data from the old table (partition) to the new table (partition). The trick is that while in order to do the switch almost everything has to be identical, the properties of the identity column are part of that almost.

I love these types of solutions:  hacks in the most positive connotation of the term.

Related Posts

Upgrading SQL On Linux

Steve Jones has a post on upgrading SQL Server on Linux: I’m cutting off part of the path, since I think it’s probably NDA. No worries, apparently the old location for me hasn’t been updated with new packages, which makes sense. I decided to check the MS docs and see how a new user would […]

Read More

Blob Auditing For Azure SQL Database

Patrick Keisler shows how to use Blob Auditing with Azure SQL Database to log database activity: If you have multiple objects or actions to audit, then just separate them with a comma, just like the AuditActionGroups parameter. The one key piece to remember is you must specify all audit actions and action groups together with […]

Read More

Leave a Reply

Your email address will not be published. Required fields are marked *

Categories

April 2017
MTWTFSS
« Mar  
 12
3456789
10111213141516
17181920212223
24252627282930