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左连接没有左表的重复行

请查看以下查询:

tbl_Contents

Content_Id  Content_Title    Content_Text
10002   New case Study   New case Study
10003   New case Study   New case Study
10004   New case Study   New case Study
10005   New case Study   New case Study
10006   New case Study   New case Study
10007   New case Study   New case Study
10008   New case Study   New case Study
10009   New case Study   New case Study
10010   SEO News Title   SEO News Text
10011   SEO News Title   SEO News Text
10012   Publish Contents SEO News …
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sql join duplicates

43
推荐指数
3
解决办法
15万
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duplicates ×1

join ×1

sql ×1