IDENT_INCR (Transact-SQL)

مقالة
05/16/2013

Returns the increment value (returned as numeric (**@@**MAXPRECISION,0)) specified during the creation of an identity column in a table or view that has an identity column.

Topic link icon Transact-SQL Syntax Conventions

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, a variable, a function, or a column name. table_or_view is char, nchar, varchar, or nvarchar.

Return Types

numeric

Exceptions

Returns NULL on error or if a caller does not have permission to view the object.

In SQL Server, a user can only view the metadata of securables that the user owns or on which the user has been granted permission. This means that metadata-emitting, built-in functions such as IDENT_INCR may return NULL if the user does not have any permission on the object. 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 AdventureWorks database.

USE AdventureWorks2012;
GO
SELECT IDENT_INCR('Person.Address') AS Identity_Increment;
GO

USE AdventureWorks2012;
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 AdventureWorks database that include an identity column with an increment value.

USE AdventureWorks2012;
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;

USE AdventureWorks2012;
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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