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如果没有条款的指令,飞行情报和安全局如何在Oracle程序中运作?
原标题:How does the FIRST_VALUE() function in Oracle process rows if there is no order by clause?

第一,(价值)定义指出,该定义在订购的数据集中回归了第一数值。 It

第一版(ColumnName) [Column]

根据《宪法》和《法令》进行分割 选择。 如果消除分治,我们就获得整体价值。

My question is what do we get if Order By is removed ?? Does oracle implicitly orders the set or just gives a random first value or gives the first value in order the data is inserted ?

最佳回答

实际上,如果你没有具体说明,按排列,则你将获得数据,以便Oracle返回结果。 随着问询计划的变化,这种情况将具有任意性,可能会发生变化。

问题回答

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