Help understand difference in sql query
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            by Anil Namde
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        Published on 2010-04-20T11:55:59Z
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            2010/04/20
            12:03 UTC
        
        
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sql-server
|sql
Select user_name [User Name], first_name [First Name], last_name [Last Name] 
    Form tab_user
    ORDER  BY user_name
Select user_name [User Name], first_name [First Name], last_name [Last Name] 
    Form tab_user
    ORDER  BY User Name
Above are the two queries,
- Is there any difference because of the user_name used instead of User Name
- Is there something that should be taken care/worried when using something like this.
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