I recently upgraded to 4.0.10, primarily in order to be able to change my minimum word length on the fly. But I can't seem to set the variable! It says it's there when I "show" it, but not when I try to change it:
--- monopoly~ $ mysql -u root -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 19 to server version: 4.0.10-gamma
Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql> SHOW VARIABLES LIKE 'version'; +---------------+--------------+ | Variable_name | Value | +---------------+--------------+ | version | 4.0.10-gamma | +---------------+--------------+ 1 row in set (0.00 sec)
mysql> SHOW VARIABLES LIKE 'ft_min%'; +-----------------+-------+ | Variable_name | Value | +-----------------+-------+ | ft_min_word_len | 4 | +-----------------+-------+ 1 row in set (0.00 sec)
mysql> SET ft_min_word_len=2; ERROR 1193: Unknown system variable 'ft_min_word_len' mysql>
It's not one of the variables that can be set dynamically. You have to set it at server startup time.
That's why there's no (global) after it on p. 922. :-)
This makes perfect sense. Remember, anytime you change this variable, you have to rebuild all your FULLTEXT indexes. If you could set the variable on the fly, you'd introduce the potential for having to rebuild your indexes all the time.
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Any idea what could be causing this? I did a Google search and someone reported the same problem on a different mailing list, but with no answer.
Thanks.
Jesse Sheidlower
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