How to Resolve Identity Seed Issues in SQL Server After Record Deletion?

Correcting Identity Seed Issues in SQL Server Following Data Deletion

SQL Server tables using auto-incrementing identity columns can experience sequence disruptions after record deletion. This affects the index column's ascending order. The DBCC CHECKIDENT command provides a solution.

The command's syntax is:

<code class="language-sql">DBCC CHECKIDENT (table_name [, { NORESEED | { RESEED [, new_reseed_value ]}}])
[ WITH NO_INFOMSGS ]</code>

DBCC CHECKIDENT resets the identity counter. Using the RESEED option allows manual control of the new seed value. To reset the identity column in 'TestTable' to 0:

<code class="language-sql">DBCC CHECKIDENT ('[TestTable]', RESEED, 0);
GO</code>

Important Note: While previously unsupported in Azure SQL Database, this command is now supported. Always consult the latest Microsoft documentation for the most accurate and up-to-date information on DBCC CHECKIDENT.

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