title: Is it possible to have a % symbol in my column name?
body: <p>I'm trying to add a new column to an existing table, but when I try to create this column name I'm getting an invalid character error.</p>
  
  <p>SQL Error: ORA-00911: invalid character
  00911. 00000 -  "invalid character"
  *Cause:    identifiers may not start with any ASCII character other than
             letters and numbers.  $#_ are also allowed after the first
             character.  Identifiers enclosed by doublequotes may contain
             any character other than a doublequote.  Alternative quotes
             (q'#...#') cannot use spaces, tabs, or carriage returns as
             delimiters.  For all other contexts, consult the SQL Language
             Reference Manual.</p>
  
  <p>This is my code:</p>
  
  <p>Alter Table Calculations
  Add WEIGHTED_% Number;</p>
  
  <p>What am I doing wrong?</p>