CREATE INDEX idx_duration ON examination_info(duration);

create UNIQUE index uniq_idx_exam_id ON examination_info(exam_id);

create FULLTEXT index full_idx_tag ON examination_info(tag);

create index idx_duration on examination_info(duration); create unique index uniq_idx_exam_id on examination_info(exam_id); create fulltext index full_idx_tag on examination_info(tag);