Msg 15138 The database principal owns a schema in the database, and cannot be dropped.

删除用户报错：   Msg 15138, Level16, State 1, Line 1 The database principal owns a schemain the database, and cannot be dropped.   解决办法（SSMS）：   1.找到用户拥有的Schema     2.在Schema中找到db_owner将Schema Owner由test6改为d

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