Changing Identity Start Value

Kenneth Fisher has a good post on what happens when you change the seed value of an identity column:

Well Paul told me this wasn’t the case. Now when Paul tells me something I believe him, but I also like to run tests. So I decided to usesys.fn_PhysLocCracker(%%physloc%%). %%physloc%% returns a varbinary that gives you the location of the row. When passed tosys.fn_PhysLocCracker(%%physloc%%) it returns the database file, page in the file, and slot number where the row can be found. So to start with I create an identity(1,1) and I run 20 inserts, one at a time, checking row locations each time. This is to confirm I’m right about this part.

Clicking through is worth it for the hypnotizing animated GIFs.

Related Posts

Changes to Azure SQL Database SLA

Arun Sirpal notes a change to the Azure SQL Database Service Level Agreement: I am sure many missed the updates to Azure SQL Database SLA (Service Level Agreement). It used to be 99.99% across all tiers  but split between two different high-availability architectural models. Basic, Standard and General Purpose tiers had its own model and […]

Read More

Disk Utilization Per Drive in SQL Server

Max Vernon has a script which shows more than what xp_fixeddrives has to offer: However, the command output doesn’t include the total size of each drive, making it impossible to determine the percent free space. If you’re in an environment where a separate team monitors disk space, and has alerts set when free space falls below a […]

Read More

Categories

September 2016
MTWTFSS
« Aug Oct »
 1234
567891011
12131415161718
19202122232425
2627282930