pseudo-column的意思|示意
伪列
pseudo-column的网络常见释义
虚拟数据行 ... pseudocode假码 pseudo-column虚拟数据行 pseudo-marshalling虚拟封送处理 ...
pseudo-column相关短语
1、 pseudo column 伪列
pseudo-column相关例句
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。
A pseudo column is an identifier with a predefined name that holds information about the hierarchical query and that can be used like any column in a table.
伪列是具有预先定义的名称的标识符，其中包含关于分级查询的信息；它的用途类似于表中的任何列。
Unless Oracle has introduced yet another pseudo column or keywords that I'm not aware of, all of Oracle's recursive features have now been mapped to DB2 UDB for Linux, UNIX, and Windows.
除非oracle引入了我不知道的其他伪列或关键字，否则Oracle所有的递归特性现在都被映射到DB 2 UDB for Linux、UNIX和Windows。
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。
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。
Another way to use the LEVEL pseudo column is shown in the following example.
下面的示例中将显示使用level伪列的另一种方法。