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IS_MEMBER (Transact-SQL)

Indicates whether the current user is a member of the specified Microsoft Windows group or Microsoft SQL Server database role.

Topic link icon Transact-SQL Syntax Conventions


IS_MEMBER ( { 'group' | 'role' } )

' group '

Is the name of the Windows group that is being checked; must be in the format Domain\Group. group is sysname.

' role '

Is the name of the SQL Server role that is being checked. role is sysname and can include the database fixed roles or user-defined roles, but not server roles.

IS_MEMBER returns the following values.

Return value Description

0

Current user is not a member of group or role.

1

Current user is a member of group or role.

NULL

Either group or role is not valid.

IS_MEMBER determines Windows group membership by examining an access token that is created by Windows. The access token does not reflect changes in group membership that are made after a user connects to an instance of SQL Server.

The following example checks whether the current user is a member of a database role or a Windows domain group.

-- Test membership in db_owner and print appropriate message.
IF IS_MEMBER ('db_owner') = 1
   print 'Current user is a member of the db_owner role'
ELSE IF IS_MEMBER ('db_owner') = 0
   print 'Current user is NOT a member of the db_owner role'
ELSE IF IS_MEMBER ('db_owner') IS NULL
   print 'ERROR: Invalid group / role specified'
go

-- Execute SELECT if user is a member of ADVWORKS\Shipping.
IF IS_MEMBER ('ADVWORKS\Shipping') = 1
   SELECT 'User ' + USER + ' is a member of ADVWORKS\Shipping.' 
go

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