Widening Indexed Identity Columns

Aaron Bertrand shows what happens when you try to widen an identity integer column associated with an index or computed column:

Summary: We will need to drop and re-create any indexes, clustered or not, that reference the IDENTITY column – in the key or the INCLUDE. If the IDENTITY column is part of the clustered index, this means all indexes, since they will all reference the clustering key by definition. And disabling them isn’t enough.

Getting column sizes right at the beginning is your best bet.  Stay tuned for other alternatives.

Related Posts

Change Tracking in SQL Server

Tim Weigel covers the basics of change tracking in SQL Server: There aren’t a lot of parameters here. You can set change tracking on or off, you can specify your retention period, and you can specify whether to enable auto-cleanup or not. For the retention period, you have the choice of DAYS, HOURS, or MINUTES. […]

Read More

Maintaining SSISDB

John McCormack was in a jam: I made 2 unsuccessful attempts at running the SSIS Server Maintenance Job. However, after several hours of processing and still no available free space in the database, I knew the job wasn’t coping with the sheer number of rows it had to delete. The deletes all happen from the parent table […]

Read More

Categories

February 2016
MTWTFSS
« Jan Mar »
1234567
891011121314
15161718192021
22232425262728
29