题解 | #创建索引#

# 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);

alter table examination_info add index idx_duration(duration);
alter table examination_info add unique uniq_idx_exam_id(exam_id);
alter table examination_info add fulltext full_idx_tag(tag);