Cannot open user default database. Login failed. Login failed for user ‘UserName’. (Microsoft SQL Server, Error: 4064)
解决方法:
1.打开"option"选项

2.点击"connection properties"
3.在“ Connect to database” 中输入存在的数据库名,比如"master"
4.连接
Cannot open user default database. Login failed. Login failed for user ‘UserName’. (Microsoft SQL Server, Error: 4064)
解决方法:
1.打开"option"选项

2.点击"connection properties"
3.在“ Connect to database” 中输入存在的数据库名,比如"master"
4.连接
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