This step requires a minimum of 3 tables to be joined (where the 3 tables can include self-joins).
这个步骤至少需要3个连接表(3个连接表中包含自连接)。
Although grouping and aggregation can be expressed in XQuery using self-joins, it is quite awkward.
尽管可利用自连接在XQuery中表示分组和聚集,但那非常糟糕。
Jupiter joins Uranus and this most fortunate combination brings out your higher self in its most divine expression.
木星结合天王星,这个最幸运的组合把你的高我带出最神圣的表现。
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