UPDATE assignment
teacherid = #{teacherid},
content = #{content},
description = #{description},
created = #{created},
starttime = #{starttime},
endtime = #{endtime},
status = #{status},
areaid = #{areaid},
packagename = #{packagename},
assigntype = #{assigntype}
WHERE assignmentid = #{assignmentid}
update assignanswer
content = #{content},
created = #{created},
medias = #{medias,typeHandler=com._3e.http.wrongbook.typehandler.JSONTypeHandlerPg}
WHERE uid = #{uid} and assignmentid = #{assignmentId}
INSERT INTO assignanswer(
uid, assignmentid, content, created,medias)
VALUES (
#{uid},#{assignmentId}, #{content}, #{created},
#{medias,typeHandler=com._3e.http.wrongbook.typehandler.JSONTypeHandlerPg})