Msg 5009, Level 16, State 9, Line 1
The primary data or log file cannot be removed from a database.
This error message appears when you try to remove the primary data or log file from a database.
The T-SQL statement can be parsed, but causes the error at runtime.
Errors of the Severity Level 16 are generated by the user and can be fixed by the SQL Server user. The statement cannot be executed this way. This file cannot be removed from a database.
All versions of SQL Server.
ALTER DATABASE MyExample
REMOVE FILE MyExample_Data
In the above example we try to remove the file MyExample_Data from the MyExample database. Because this is the primary data file, the error is raised.