红移:只复制新记录,忽略现有记录

我已使用此查询将数据从外部表传输到内部表

insert into jatinanalysis (title,url,author,published_date,category)
select b.title,b.link,b.author,b.published_date,category
FROM  jatinspectrum.extable a, a.enteries b,b.category category

更新:尝试了这个 https://stackoverflow.com/a/656027/13126651 但是没有运气

insert into jatinanalysis (title,url,author,published_date,category)
select distinct b.title,b.link,b.author,b.published_date,category
FROM  jatinspectrum.extable a, a.enteries b,b.category category
WHERE NOT EXISTS(SELECT * 
                 FROM jatinanalysis
                 WHERE (jatinspectrum.extable.b.title=jatinanalysis.title and
                        jatinspectrum.extable.b.link=jatinanalysis.url and
                        jatinspectrum.extable.b.author=jatinanalysis.author and
                        jatinspectrum.extable.b.b.published_date=jatinanalysis.published_date and
                        jatinspectrum.extable.category=jatinanalysis.category)