SQL experts, can you please help.

[Just Alex]

Ok, so I have primary key thats AUTO_INCREMENT. There's another field file_name that I need to populate with number from primary key plus file extension

So right now its like this and I need to run an update query to populate file_name fields

File_Id File_name
1 NULL
2 NULL
3 NULL


To be


File_Id File_name
1 1.jpg
2 2.jpg
3 3.jpg

What's correct structure of update query?

Thank you

[Brujah]

UPDATE table SET File_name = CONCAT( File_id, '.jpg' );

[Just Alex]

UPDATE table SET File_name = CONCAT( File_id, '.jpg' );

Huh, it worked. Im so stupid adding convert(varchar(100) to this thinking numeric field cant be concatenated in text fields.

Thank you very much!