1.備份資料至新錶進行操作
select * into mark_level from m_level
select * into mark_readingoption from m_articleoption
select * into yubin_materiallevel from materiallevel
select * into yubin_readingmaterial from readingmaterial
select * into yubin_readingquestion from readingquestion
2.truncate table mark_readingoption
3.向mark_level 中新增materiallevel欄位
update mark_level set materiallevel=(levelno+8)
4.向yubin_readingmaterial表中加入 levelid 字段
查詢 select a.materiallevel,a.levelid,b.materiallevel,b.id from yubin_readingmaterial as a join
mark_level as b on a.materiallevel = b.materiallevel
更新 update a set a.levelid=b.id from yubin_readingmaterial as a join
mark_level as b on a.materiallevel = b.materiallevel
5.向yubin_readingquestion表中加入articleid欄位
查詢 select * from yubin_readingquestion as a join yubin_readingmaterial as b on a.materialcode=b.materialcode
更新 update a set a.articleid=b.id from yubin_readingquestion as a
join yubin_readingmaterial as b on a.materialcode=b.materialcode
6.向mark_readingoption表中加入answer欄位，匯入選項資料
insert into mark_readingoption(questionid,body,sn,answer) select id,optiona,'a',answer from yubin_readingquestion
insert into mark_readingoption(questionid,body,sn,answer) select id,optionb,'b',answer from yubin_readingquestion
insert into mark_readingoption(questionid,body,sn,answer) select id,optionc,'c',answer from yubin_readingquestion
insert into mark_readingoption(questionid,body,sn,answer) select id,optiond,'d',answer from yubin_readingquestion
刪除內容為空的選項 delete from mark_readingoption where body is null
7.填入答案
update mark_readingoption set isanswer=1 where sn=answer
刪除 answer 字段
8.整理4張資料表，改為以a開頭的對應表，備份為b表。
9.修改a表相應的字段。
10.資料檢查
select a.name,b.title,b.body from a_level as a join a_article as b on b.levelid=a.id
where b.title='a clever bird'
select a.name,b.title,b.body,c.body from a_level as a join a_article as b on b.levelid=a.id
join a_articlequestion as c on c.articleid=b.id
where b.title='a clever bird'
select a.name,b.title,b.body,c.body,d.body,d.isanswer from a_level as a join a_article as b on b.levelid=a.id
join a_articlequestion as c on c.articleid=b.id
join a_articleoption as d on d.questionid=c.id
where b.title='a clever bird' order by c.body
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