insert into t_poem (poem_name,poem_user,poem_information,givelike,collection,`explain`,`time`) values (#{poemName},#{poemUser},#{poemInformation},0,0,#{explain},#{time}); update t_poem set poem_name=#{poemName}, poem_information=#{poemInformation}, `explain`=#{explain}, `time` = #{time} where poem_id = #{poemId}; select poem_id , poem_name , t_user.username as poem_user, user_id, poem_information , givelike , collection , `explain` , `time` from t_poem left join t_user on t_poem.poem_user=t_user.user_id where poem_user=#{userId} select poem_id , poem_name , t_user.username as poem_user, user_id, poem_information , givelike , collection , `explain` , `time` from t_poem left join t_user on t_poem.poem_user=t_user.user_id where poem_id = #{poemId} select poem_id , poem_name , t_user.username as poem_user, user_id, poem_information , givelike , collection , `explain` , `time` from t_poem left join t_user on t_poem.poem_user=t_user.user_id where poem_name=#{poemName} select poem_id , poem_name , t_user.username as poem_user, user_id, poem_information , givelike , collection , `explain` , `time` from t_poem left join t_user on t_poem.poem_user=t_user.user_id where username=#{username} delete from t_poem where poem_id = #{poemId}