Duplicate column name devices_sn

This error message is encountered when trying to create or modify a table in a database that contains two or more columns with the same name. In this case, the column name 'devices_sn' is already present in the table, and the system is unable to create another column with the same name.

To fix this error, you need to modify the table structure and ensure that each column has a unique name. You can do this by renaming one of the duplicate columns to a different name or by removing one of the duplicate columns altogether.

To rename a column, you can use the ALTER TABLE statement, like so:

ALTER TABLE table_name RENAME COLUMN devices_sn TO new_column_name;

Alternatively, you can remove one of the duplicate columns using the ALTER TABLE statement with the DROP COLUMN keyword, like so:

ALTER TABLE table_name DROP COLUMN devices_sn;

Once you have resolved the duplicate column issue, you should be able to create or modify the table without encountering the error message