FILEPROPERTYEX (Transact-SQL)

บทความ
29/12/2565

Applies to: Azure SQL Database Azure SQL Managed Instance

Returns the specified extended file property value when a file name in the current database and a property name are specified. Returns NULL for files that are not in the current database or for extended file properties that do not exist. Currently, extended file properties only apply to databases that are in Azure Blob storage.

Transact-SQL syntax conventions

Syntax

syntaxsql

FILEPROPERTYEX ( name , property )

Arguments

name
Is an expression that contains the name of the file associated with the current database for which to return property information. file_name is nchar(128).

property
Is an expression that contains the name of the file property to return. property is varchar(128), and can be one of the following values.

Value	Description
BlobTier	The tier of target Azure page blob. Applies only to Standard and GeneralPurpose databases that uses Azure page blob storage.
AccountType	The storage account type indicating whether it is blob storage or file storage and whether it is premium or standard storage.
IsInferredTier	Indicates whether the tier is an implicit (inferred) tier which could grow with data size, or an explicit (fixed) tier.
IsPageBlob	Indicates whether the target blob is page blob or not.

Return Types

sql_variant

Remarks

file_name corresponds to the name column in the sys.master_files or sys.database_files catalog view.

Examples

The following example returns the setting for database files:

SQL

SELECT s.file_id,
       s.type_desc,
       s.name,
       FILEPROPERTYEX(s.name, 'BlobTier') AS BlobTier,
       FILEPROPERTYEX(s.name, 'AccountType') AS AccountType,
       FILEPROPERTYEX(s.name, 'IsInferredTier') AS IsInferredTier,
       FILEPROPERTYEX(s.name, 'IsPageBlob') AS IsPageBlob
FROM sys.database_files AS s
WHERE s.type_desc IN ('ROWS', 'LOG');

Here's the result set.

file_id  type_desc  name  BlobTier  AccountType  IsInferredTier  IsPageBlob
--------------------------------------------------------------------------------------
1     ROWS      data_0  P30  PremiumBlobStorage  0   1
2     LOG       log     P30  PremiumBlobStorage  0   1

(2 rows affected)

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