mysql分词查询并根据关键词匹配度进行排序

		        
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