see the query on the web that is similar to name like"% key", where the name column builds an index. If you want to go to the index, you can use
where reverse(name) like reverse("%key")
to my surprise, name builds an index, but reverse (name) doesn"t build an index. Does MySQL generate it automatically?
or do you need to create a column manually
like this?
alter table add column reverse_name varchar(10) as (reverse(name));
create index on reverse_name;
this is an optimization of MySQL because reverse ('% key') = 'yek%' , while the query like' yek%' is indexed.
can I write down the specific implementation process? Mine is still not indexed.
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