如何测试SQL Server数据库是否处于单用户模式

Question

如何在SQL脚本中测试SQL Server数据库是否处于单用户模式？

Answer 1

您可以查看sys.databases视图...

if (SELECT user_access_desc FROM sys.databases WHERE name = 'YourDb') 
                                                            = 'SINGLE_USER'
    begin
       print 'It is in single user mode!'
    end

Answer 2

SELECT CASE WHEN（SELECT 1 FROM sys.databases WHERE name ='YourDb'AND user_access_desc ='SINGLE_USER'）= 1 THEN 1 ELSE 0 END AS SingleUserMode;