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The following together to understand the connection mysql the simplest way, I believe we will certainly benefit from reading, the text is not more refined, I hope the connection mysql the simplest way this short content is what you want.

inner join

from table_a a inner join table_b b on a.xxx = b.xxx

left join

The left join reads data from the left table, even if there is no data in the right.

from table_a a left join table_b b on a.xxx = b.xxx

right join

The right join reads data from the right table, even if there is no data in the left table

from table_a a right join table_b b on a.xxx = b.xxx

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