mysql分词查询并根据关键词匹配度进行排序

sql查询后需要根据匹配度降序排列显示

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select (if(LOCATE('tomcat',notetitle),1,0)+ if(LOCATE('nginx',notetitle),1,0)+if(LOCATE('linux',notetitle),1,0)) 
as score,notetitle from technicalnote 
where notetitle like'%tomcat%' or notetitle like '%nginx%' or notetitle like '%linux%' order by score desc