select user_id, post_id from company_user_post where user_id = #{userId} insert into company_user_post user_id, post_id, #{userId}, #{postId}, update company_user_post post_id = #{postId}, where user_id = #{userId} delete from company_user_post where user_id = #{userId} delete from company_user_post where user_id in #{userId} insert into company_user_post(user_id, post_id) values (#{item.userId},#{item.postId}) delete from company_user_post where user_id=#{userId}