pseudo-level 拟液面
pseudo-geodetic level plane 似大地水准面
water level pseudo-change 水位伪变化
level of Pseudo Random Noise 低水平的伪随机噪声
The pseudo column LEVEL is used in a string to make the hierarchy visible.
可在字符串中使用伪列LEVEL,使分层结构变得可视。
In the following example, the pseudo column LEVEL is specified on the select list.
在下列示例中,在选择列表中指定伪列LEVEL。
LEVEL - the pseudo column LEVEL returns an integer value that represents the recursive step in the hierarchy at which the row was produced.
LEVEL—伪列LEVEL返回一个整数值,表示所生成行的分层结构中的递归步骤。
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