insert into message (nickname, pic, sendTime, message,account)
values (#{nickname}, #{pic}, #{sendTime}, #{message},#{account})
update message
set pic = #{pic}
where nickname = #{nickname}
update message
set nickname='用户已注销' and account='用户已注销' and pic = 'http://www.oss.coollh.cn/delete.jpg'
where account = #{account}
update message set nickname=#{username} where account=#{account}