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The following brings you about what is mysql total external connection. If you are interested, take a look at this article together. I believe that reading what is mysql total external connection will help you a little.

#Total outer join: intersection of master and slave tables + master table has slave table without + slave table has master table without master table, but does not divide master and slave tables

SELECT b.*, bo.* FROM beauty bFULL OUTER JOIN boys boON

bo.id=b.boyfriend_id;

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