select id, schoolid, classid, title, content, create_time, type from by_halfdayplan
insert into by_halfdayplan
id,schoolid,classid,title,content,create_time,type,#{id},#{schoolid},#{classid},#{title},#{content},#{createTime},#{type},
update by_halfdayplan
schoolid = #{schoolid},classid = #{classid},title = #{title},content = #{content},create_time = #{createTime},type = #{type},
where id = #{id}
delete from by_halfdayplan where id = #{id}
delete from by_halfdayplan where id in
#{id}