Visual explanation of MySQL joins: Difference between revisions

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== 狀況 1-1: 以 a 資料為主,再把 b 資料黏上 ==
== 狀況 1-1: 以 a 資料為主,再把 b 資料黏上 ==
http://planetoid.info/images/Venn_diagrams_proposition_a.png
<div style="min-width: 100%">http://planetoid.info/images/Venn_diagrams_proposition_a.png </div>


MySQL 資料庫查詢:
MySQL 資料庫查詢:

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