IDENT_INCR (Transact-SQL)

Artikkel
09/03/2024

Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance

Returns the increment value specified when creating a table or view's identity column.

Syntax

IDENT_INCR ( 'table_or_view' )

Arguments

' table_or_view '
Is an expression specifying the table or view to check for a valid identity increment value. table_or_view can be a character string constant enclosed in quotation marks. It can also be a variable, a function, or a column name. table_or_view is char, nchar, varchar, or nvarchar.

Return Types

numeric(@@MAXPRECISION,0))

Exceptions

Returns NULL on error or if a caller doesn't have object view permission.

In SQL Server, a user can only view the metadata of securables they own or have permissions for. Without user object permission, a metadata-emitting, built-in function, such as IDENT_INCR, may return NULL. For more information, see Metadata Visibility Configuration.

Examples

A. Returning the increment value for a specified table

The following example returns the increment value for the Person.Address table in the AdventureWorks2022 database.

USE AdventureWorks2022;  
GO  
SELECT IDENT_INCR('Person.Address') AS Identity_Increment;  
GO

B. Returning the increment value from multiple tables

The following example returns the tables in the AdventureWorks2022 database that includes an identity column with an increment value.

USE AdventureWorks2022;  
GO  
SELECT TABLE_SCHEMA, TABLE_NAME,   
   IDENT_INCR(TABLE_SCHEMA + '.' + TABLE_NAME) AS IDENT_INCR  
FROM INFORMATION_SCHEMA.TABLES  
WHERE IDENT_INCR(TABLE_SCHEMA + '.' + TABLE_NAME) IS NOT NULL;

Here is a partial result set.

TABLE_SCHEMA        TABLE_NAME                IDENT_INCR  
------------        ------------------------  ----------  
Person              Address                            1  
Production          ProductReview                      1  
Production          TransactionHistory                 1  
Person              AddressType                        1  
Production          ProductSubcategory                 1  
Person              vAdditionalContactInfo             1  
dbo                 AWBuildVersion                     1  
Production          BillOfMaterials                    1

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