1.更新單個字段
update a set a.title='更新值'
2.更新多個字段
update a set a.title='title更新值',a.createId='createId更新值'
3.從A表查出多個字段更新B表多個字段
update a set( a.user_id,a.name)=
(SELECT listagg(bb .USER_ID,',') WITHIN GROUP (ORDER BY bb .USER_ID) ,
listagg(bb .USER_NAME,',') WITHIN GROUP (ORDER BY bb .USER_NAME)
from bb WHERE bb .aID ='*****'
GROUP BY bb .id) where a.id='*****'
說明a表爲主表,bb表爲從表