A random masking function for use on any numeric type to mask the original value with a random value within a specified range. You don't need any special permission to create a table with a dynamic data mask, only the standard CREATE TABLE and ALTER on schema permissions. For users without the UNMASK permission, the deprecated READTEXT, UPDATETEXT, and WRITETEXT statements don't function properly on a column configured for Dynamic Data Masking. Users with CONTROL SERVER or CONTROL at the database level could view masked data in its original form. This includes admin users or roles such as sysadmin, serveradmin, db_owner etc.

Dynamic Data Masking is applied when running SQL Server Import and Export. A database containing masked columns results in an exported data file with masked data (assuming it's exported by a user without UNMASK privileges), and the imported database will contain statically masked data. A new user is created and granted the SELECT permission on the schema where the table resides. Queries executed as the MaskingTestUser view masked data. CREATE USER MaskingTestUser WITHOUT LOGIN; Using SELECT INTO or INSERT INTO to copy data from a masked column into another table results in masked data in the target table (assuming it's exported by a user without UNMASK privileges). Microsoft Entra ID is the new name for Azure Active Directory (Azure AD). We are updating documentation at this time. Define a dynamic data mask

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where the number in DiscountCode is random for every query result. Add or editing a mask on an existing column Use the ALTER TABLE statement to add a mask to an existing column in the table, or to edit the mask on that column. XNX Video Player - XNX Videos HD is a player app for Android that enables you to easily play all video formats on your Android phone or tablet with the highest possible quality. The wide range of supported video formats, including movies with 4K or Ultra HD quality, make this free video player app your #1 choice when it comes to finding the best XNX Videos HD video player app for Android. SQL Server 2016 (13.x) and later Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Grant different UNMASK permissions to users: --Grant column level UNMASK permission to ServiceAttendant

For date and time data types, use 1900-01-01 00:00:00.0000000 ( date, datetime2, datetime, datetimeoffset, smalldatetime, time). Example definition syntax: FirstName varchar(100) MASKED WITH (FUNCTION = 'partial(prefix,[padding],suffix)') NULLDynamic data masking helps prevent unauthorized access to sensitive data by enabling customers to specify how much sensitive data to reveal with minimal effect on the application layer. DDM can be configured on designated database fields to hide sensitive data in the result sets of queries. With DDM, the data in the database isn't changed. DDM is easy to use with existing applications, since masking rules are applied in the query results. Many applications can mask sensitive data without modifying existing queries. Example of alter syntax: ALTER COLUMN [Phone Number] ADD MASKED WITH (FUNCTION = 'partial(1,"XXXXXXX",0)')

For numeric data types use a zero value ( bigint, bit, decimal, int, money, numeric, smallint, smallmoney, tinyint, float, real). As an example, consider a database principal that has sufficient privileges to run ad hoc queries on the database, and tries to 'guess' the underlying data and ultimately infer the actual values. Assume that we have a mask defined on the [Employee].[Salary] column, and this user connects directly to the database and starts guessing values, eventually inferring the [Salary] value in the Employees table: SELECT ID, Name, Salary FROM Employees Since the entire features of this free XNX Video Player app are available for free, there is no harm giving it a try and explore the features for yourself. Just open the video file you wish to watch and leave the rest to this powerful video player.

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The UNMASK permission does not influence metadata visibility: granting UNMASK alone doesn't disclose any metadata. UNMASK will always need to be accompanied by a SELECT permission to have any effect. Example: granting UNMASK on database scope and granting SELECT on an individual Table will have the result that the user can only see the metadata of the individual table from which he can select, not any others. Also see Metadata Visibility Configuration. Best practices and common use cases This content applies to dynamic data masking concepts generally, and specific to SQL Server. Content specific to other platforms is available: Administrative users and roles can always view unmasked data via the CONTROL permission, which includes both the ALTER ANY MASK and UNMASK permission. Administrative users or roles such as sysadmin, serveradmin, or db_owner have CONTROL permissions on the database by design, and can view unmasked data.

Grant read permissions to the users in the database: ALTER ROLE db_datareader ADD MEMBER ServiceAttendant; Adding a dynamic data mask is implemented as a schema change on the underlying table, and therefore can't be performed on a column with dependencies. To work around this restriction, you can first remove the dependency, then add the dynamic data mask and then re-create the dependency. For example, if the dependency is due to an index dependent on that column, you can drop the index, then add the mask, and then re-create the dependent index. For string data types, use XXXX (or fewer) if the size of the field is fewer than 4 characters ( char, nchar, varchar, nvarchar, text, ntext). To revoke UNMASK permissions, use the following T-SQL statements: REVOKE UNMASK ON Data.Membership(FirstName) FROM ServiceAttendant; Example definition syntax: Account_Number bigint MASKED WITH (FUNCTION = 'random([start range], [end range])')For dynamic data masking in Azure SQL Database, Azure SQL Managed Instance, and Azure Synapse Analytics, see Get started with SQL Database Dynamic Data Masking. Masking method that exposes the first and last letters and adds a custom padding string in the middle. prefix,[padding],suffix