Q:

MySQL: Add stoplist

How could I add a own stoplist to MySQL 5?

A:

Guessing you're asking about how to set the stopwords list for MySQL FULLTEXT search, this portion of the manual page 11.8.6. Fine-Tuning MySQL Full-Text Search could interest you (quoting) :

To override the default stopword list,
  set the ft_stopword_file system
  variable. (See Section 5.1.3, “Server
  System Variables”.) The variable value
  should be the path name of the file
  containing the stopword list, or the
  empty string to disable stopword
  filtering. The server looks for the
  file in the data directory unless an
  absolute path name is given to specify
  a different directory. After changing
  the value of this variable or the
  contents of the stopword file, restart
  the server and rebuild your FULLTEXT 
  indexes.
The stopword list is free-form. That
  is, you may use any nonalphanumeric
  character such as newline, space, or
  comma to separate stopwords.
  Exceptions are the underscore
  character (“_”) and a single
  apostrophe (“'”) which are treated as
  part of a word. The character set of
  the stopword list is the server's
  default character set; see Section
  9.1.3.1, “Server Character Set and Collation”.

