您可以通过一些字符串操作来提取单词。假设您有一个数字表,并且单词之间用单个空格分隔:
select substring_index(substring_index(r.title, ' ', n.n), ' ', -1) as word,
count(*)
from results r join
numbers n
on n.n <= length(title) - length(replace(title, ' ', '')) + 1
group by word;
from results r join
(select 1 as n union all select 2 union all select 3 union all . . .
) n
. . .