drop table if exists diaries;
set @mroonga_default_tokenizer_backup=@@mroonga_default_tokenizer;
set global mroonga_default_tokenizer=TokenBigramSplitSymbolAlphaDigit;
create table diaries (
id int primary key auto_increment,
body text,
fulltext index body_index (body)
) default charset utf8mb4;
insert into diaries (body) values ("will start Groonga!");
insert into diaries (body) values ("starting Groonga...");
insert into diaries (body) values ("started Groonga.");
insert into diaries (body) values ("finished Groonga.");
select * from diaries;
id	body
1	will start Groonga!
2	starting Groonga...
3	started Groonga.
4	finished Groonga.
select * from diaries where match(body) against("+start" IN BOOLEAN MODE) order by id;
id	body
1	will start Groonga!
2	starting Groonga...
3	started Groonga.
drop table diaries;
set global mroonga_default_tokenizer=@mroonga_default_tokenizer_backup;
