range variable信息详情
范围变数,范围变量
variable───n.[数]变量;可变物,可变因素;adj.变量的;可变的;易变的,多变的;变异的,[生物]畸变的
range───vi.(在...内)变动;平行,列为一行;延伸;漫游;射程达到;n.范围;幅度;排;山脉;vt.漫游;放牧;使并列;归类于;来回走动
variable costs───可变成本
variable resistor───[电]可变电阻器
forcing variable───强制变量
response variable───反应变量
variable speed───[机][车辆]变速,可变速率
exogenous variable───外生变数,[数]外生变量
confounding variable───混杂变量
you have to introduce a temporary range variable for the right side (inner) sequence before the join operation.───必须在联接操作之前为右侧(内部)序列引入一个临时范围变量。
Once initialized with a value, the range variable cannot be used to store another value.───使用值进行初始化之后,就不可以再使用范围变数来储存另一个值。
If the range variable is not an immutable type, the query will only ignore a query result if all members of the type match an existing query result.───如果范围变数并非不变的型别,则只有当型别的所有成员都符合现有的查询结果时,查询才会忽略查询结果。
The range variable is like the iteration variable in a foreach loop except that no actual iteration occurs in a query expression.───范围变量类似于foreach循环中的迭代变量,但在查询表达式中,实际上不发生迭代。
Once initialized with a value, the range variable cannot be used to store another value.───一旦用值初始化了该范围变量,它就不能用于存储其他值。
The Select clause selects the customer name and ID value and populates the Name and ID columns of the new range variable.───Select子句选择客户名称和ID值,并填充新范围变量的Name和ID列。
Restricts the values of the current range variable to eliminate duplicate values in subsequent query clauses.───限制当前范围变量的值,以消除后续查询子句中的重复值。
When the query is executed, the range variable will serve as a reference to each successive element in customers.───执行查询时,范围变量将用作对customers中的每个后续元素的引用。
Define the first number range variable, as described in Defining your own numbering sequences.───如定义自己的编码序列所述,定义第一个数字范围变数。
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