user_volunteer
id,
scheme_record_id,user_id, volunteer_id
#{i.scheme_record_id},#{i.user_id},#{i.volunteer_id},now(), now()
#{schemeRecordId},#{userId},#{volunteerId}
scheme_record_id = #{schemeRecordId},
user_id =#{userId},
volunteer_id =#{volunteerId},
id = #{id}
and scheme_record_id = #{schemeRecordId}
and user_id =#{userId}
and volunteer_id =#{volunteerId}
insert into
()
value(
)
INSERT INTO
()
VALUES
()
UPDATE
id = #{id}
delete from
where id = #{id}