How to get next identity value in SQL Server?

How to get next identity value in SQL Server?

Getting the next identity value in SQL Server is a common requirement when inserting data into a table with an identity column. You can achieve this by using the built-in function `IDENT_CURRENT` or by querying the `sys.identity_columns` system view. Here are the steps to get the next identity value:

1. **Using IDENT_CURRENT function:**

The `IDENT_CURRENT` function returns the last identity value generated for a specific table in any session, and it can be used to get the next identity value.

“`sql
SELECT IDENT_CURRENT(‘YourTableName’) + 1 AS NextIdentityValue
“`

2. **Using sys.identity_columns system view:**

You can also query the `sys.identity_columns` system view to get information about identity columns in a table.

“`sql
SELECT IDENT_SEED(‘YourTableName’) + IDENT_INCR(‘YourTableName’) AS NextIdentityValue
“`

Now that you know how to get the next identity value in SQL Server, let’s address some related FAQs:

How to check if a table has an identity column in SQL Server?

You can check if a table has an identity column by querying the `sys.columns` system view and filtering by the `is_identity` column.

How to get the current identity value in SQL Server?

To get the current identity value in SQL Server, you can use the `SCOPE_IDENTITY` function, which returns the last identity value generated within the current scope.

How to set the identity seed in SQL Server?

You can set the identity seed value for a table by using the `IDENTITY` property with the `SEED` argument in the `ALTER TABLE` statement.

How to reset the identity column in SQL Server?

You can reset the identity column in SQL Server by using the `DBCC CHECKIDENT` command with the `RESEED` argument.

How to prevent gaps in identity column values in SQL Server?

To prevent gaps in identity column values in SQL Server, you can use the `IDENTITY` property along with the `NO CACHE` argument to ensure that values are not cached.

How to insert data into a table with an identity column in SQL Server?

When inserting data into a table with an identity column, you can either specify the column list without the identity column or use the `SET IDENTITY_INSERT` option to temporarily enable the insertion of identity values.

How to change the identity column value in SQL Server?

You cannot change the value of an identity column directly in SQL Server. If you need to update the identity column value, you can use a workaround like reseeding the identity column.

How to get the identity column properties in SQL Server?

You can get information about identity columns in SQL Server by querying the `sys.identity_columns` system view, which contains metadata about identity columns in a database.

How to get the list of tables with identity columns in SQL Server?

You can retrieve a list of tables with identity columns in SQL Server by querying the `sys.tables` and `sys.identity_columns` system views and joining them on the relevant columns.

How to disable an identity column in SQL Server?

You cannot disable an identity column in SQL Server once it has been defined. However, you can use the `SET IDENTITY_INSERT` option to insert values into an identity column.

How to alter an identity column in SQL Server?

You can alter an identity column in SQL Server by using the `ALTER TABLE` statement with the `ALTER COLUMN` clause to modify the properties of the identity column.

How to get the next value of a sequence in SQL Server?

In SQL Server, you can create a sequence object and use the `NEXT VALUE FOR` function to get the next value of the sequence.

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