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If trying to truncate MySQL InnoDB tables and you are getting an error because of foreign keys constraints try disabling the foreign keys checks. SET FOREIGN_KEY_CHECKS = 0; .. TRUNCATE tableName; TRUNCATE tableName2; .. SET FOREIGN_KEY_CHECKS = 1;

Getting Top N of a group would be very easy if there just wasn’t that ‘LIMIT & IN/ALL/ANY/SOME subquery’ restriction. But there’s always some way around. Thx to Jon Armstrong from A little Noise for the code hint. MYSQL table ‘measurements’ | Id | Freq | Level | DateM ## Gets the last 2 measurements [...]

To disable MySQL FULLTEXT Search stopwords open the mysql config file and below [mysqld] add the following line: ft_stopword_file = “” By setting the ft_stopword_file value to an empty string the usual stopwords won’t be ignored any more. Here is what the manual says about setting a new stopwords file: To override the default stopword [...]

By default the FULLTEXT minimum characters behaviour is set to 4 characters. To check what value is preset on your server type the following query: SHOW VARIABLES LIKE ‘ft%’; That shoud bring up a result similar to this: Variable_name Value ft_boolean_syntax + -><()~*:””&| ft_max_word_len 84 ft_min_word_len 4 ft_query_expansion_limit 20 ft_stopword_file (built-in) To change the ftp_min_word_len [...]