2023-07-19
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IDENTITY Property
The IDENTITY Column Property
There are a number of ways to generate key values in SQL Server tables including the IDENTITY column property, the NEWID() function and more recently, SEQUENCES. The IDENTITY column property is the earliest of these methods. It was introduced very early in the history of SQL Server and it is arguably the simplest approach. Though old, IDENTITY is still maintained in modern versions of SQL Server and is still relevant for simple use cases.
2020-05-21
8,580 reads
2024-12-23 (first published: 2020-05-05)
784 reads
2020-03-06
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2020-02-27
728 reads
Change Not For Replication Value for SQL Server Identity Columns
In this tip we look at how to change the SQL Server setting for a tables identity column to not for replication for existing tables.
2019-05-03
2019-02-26
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2019-02-21
815 reads
2019-02-14
783 reads
2019-02-07
867 reads
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Question of the Day
The Range of Customers
I have this data in the OrderHeader table in a SQL Server 2025 database (ordered by CustomerID ASC):
orderid orderdate customerid complete 3 2025-05-10 00:00:00.0002 1 21 2024-01-10 00:00:00.0003 1 15 2023-10-28 00:00:00.0004 1 13 2025-03-08 00:00:00.0006 1 11 2024-04-02 00:00:00.0007 1If I run this query, how many rows are returned?
SELECT * from dbo.OrderHeader where customerid between 3 and '6'See possible answers