SQL中的JOIN類型解釋（CROSS, INNER,OUTER），關鍵字ON,USING

書上講得明白，解了不少迷惑。   SELECT e.fname, e.lname, d.name FROM employee AS e INNER JOIN department AS d ON e.dept_id = d.dept_id; SELECT e.fname, e.lname, d.name FROM employee AS e INNER JOIN department AS d

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