MySQL Reference Manual for version 4.0.18.

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13.7.2 Fine-tuning MySQL Full-text Search

Unfortunately, full-text search has few user-tunable parameters yet, although adding some is very high on the TODO. If you have a MySQL source distribution (see section 2.3 MySQL Installation Using a Source Distribution), you can exert more control over full-text searching behavior.

Note that full-text search was carefully tuned for the best searching effectiveness. Modifying the default behavior will, in most cases, only make the search results worse. Do not alter the MySQL sources unless you know what you are doing!

The full-text variables described in the following list must be set at server startup time. You cannot modify them dynamically while the server is running.

For full-text changes that require you to rebuild your FULLTEXT indexes, the easiest way to do so for a MyISAM table is to use the following statement, which rebuilds the index file:

 
mysql> REPAIR TABLE tbl_name QUICK;


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