这是一个有点奇怪的问题,所以问这个问题的最好方法是举个例子。我有一份顾客名单。我希望获得在CourseHistory表或Access表(或两者)中具有相应条目的任何客户。SELECTFROM CROSS JOIN Realms r LEFT JOIN Access a ON (c.cusid = a.cusid AND r.realmid = a
nicholas $ Stopped at /home/nicholas/xquery/sqlite.xq, 1/23:
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