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TYPE_NAME (Transact-SQL)

Returns the unqualified type name of a specified type ID.

Ikona łącza do tematu Transact-SQL Syntax Conventions

Składnia

TYPE_NAME ( type_id ) 

Arguments

  • type_id
    Is the ID of the type that will be used. type_id is an int, and it can refer to a type in any schema that the caller has permission to access.

Return Types

sysname

Wyjątki

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 TYPE_NAME may return NULL if the user does not have any permission on the object. For more information, see Metadata Visibility Configuration.

Uwagi

TYPE_NAME will return NULL when type_id is not valid or when the caller does not have sufficient permission to reference the type.

TYPE_NAME works for system data types and also for user-defined data types. The type can be contained in any schema, but an unqualified type name is always returned. This means the name does not have the schema**.** prefix.

System functions can be used in the select list, in the WHERE clause, and anywhere an expression is allowed. For more information, see Expressions (Transact-SQL) and WHERE (Transact-SQL).

Examples

The following example returns the object name, column name, and type name for each column in the Vendor table of the AdventureWorks2012 database.

USE AdventureWorks2012;
GO
SELECT o.name AS obj_name, c.name AS col_name,
       TYPE_NAME(c.user_type_id) AS type_name
FROM sys.objects AS o 
JOIN sys.columns AS c  ON o.object_id = c.object_id
WHERE o.name = 'Vendor'
ORDER BY col_name;
GO

Here is the result set.

obj_name col_name type_name

--------------- ------------------------ --------------

Vendor AccountNumber AccountNumber

Vendor ActiveFlag Flag

Vendor BusinessEntityID int

Vendor CreditRating tinyint

Vendor ModifiedDate datetime

Vendor Name Name

Vendor PreferredVendorStatus Flag

Vendor PurchasingWebServiceURL nvarchar

(8 row(s) affected)

Zobacz także

Odwołanie

TYPE_ID (Transact-SQL)

TYPEPROPERTY (Transact-SQL)

sys.types (Transact-SQL)

Metadata Functions (Transact-SQL)