问题描述
I have inserted records into a SQL Server database table. The table had a primary key defined and the auto increment identity seed is set to "Yes". This is done primarily because in SQL Azure, each table has to have a primary key and identity defined.
But since I have to delete some records from the table, the identity seed for those tables will be disturbed and the index column (which is auto-generated with an increment of 1) will get disturbed.
How can I reset the identity column after I deleted the records so that the column has sequence in ascending numerical order?
The identity column is not used as a foreign key anywhere in database.
The DBCC CHECKIDENT management command is used to reset identity counter. The command syntax is:
DBCC CHECKIDENT (table_name [, { NORESEED | { RESEED [, new_reseed_value ]}}])
[ WITH NO_INFOMSGS ]
Example:
DBCC CHECKIDENT ('[TestTable]', RESEED, 0);
GO
It was not supported in previous versions of the Azure SQL Database but is supported now.
Thanks to Solomon Rutzky the docs for the command are now fixed.
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