For SQL, when did it start to be desirable to always use the words "Inner Join" instead of implicitl

Posted by Jian Lin on Stack Overflow See other posts from Stack Overflow or by Jian Lin
Published on 2010-04-24T23:02:35Z Indexed on 2010/04/24 23:13 UTC
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join

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inner-join

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mysql

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outer-join

For SQL, when did it start to be desirable to always use the words "Inner Join" instead of implicitly joining by:

select * from t1, t2 where t1.ID = t2.ID;

? Is it just for style or to distinguish between outer join or are there other reasons for it?

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