mysql查询出错，尝试连接表

Question

有人能看出为什么这段代码会返回错误吗？

    "SELECT
a.widget_id,
c.additional_widget_id
FROM
exp_widgets AS a,
INNER JOIN exp_widget_additional AS c ON a.entry_id = c.additional_entry_id
WHERE
a.template = 3
AND
c.additional_template_id = 3
AND
(a.entry_id = 6 OR c.additional_entry_id = 6)
";

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Answer 1

你有一个流氓逗号：

...
exp_widgets AS a,
INNER JOIN exp_widget_additional`
...

应该是

...
exp_widgets AS a
INNER JOIN exp_widget_additional
...