insert into users(usersid , username , password , realname , sex , birthday , contact , regdate , asksid , answer
) values(#{usersid} , #{username} , #{password} , #{realname} ,
#{sex} , #{birthday} , #{contact} , #{regdate}, #{asksid} , #{answer} )
update users set username=#{username} , password=#{password} , realname=#{realname} , sex=#{sex} ,
birthday=#{birthday} , contact=#{contact} , regdate=#{regdate} where usersid=#{usersid}
delete from users where usersid = #{usersid}