石秉修(PING-HSIU SHIH) comments

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                                            石秉修(PING-HSIU SHIH)

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Hi @thomas-oliver-cko I am glad you like this MR. I saw there were some conflicts created by the new modification. Now, I have fixed it.

Hi @JamesNK Could you please take look at this? Thanks.

是的經過我的測試和查找相關文章 unique Index 在某些情境能幫助 QO 建立較優執行計畫，在 postgres 中並沒有像在 sql-server 那樣會有 many to many 優化的事情感謝德哥回答我先把 issue 關閉了