At each operator in the access plan, the optimizer estimates the cardinality output from the operator.
对于访问计划的每个操作符，优化器将估计该操作符的基数输出。
The example in Listing 3 shows how you can use this operator in combination with the !$ operator.
清单3中的示例显示可以如何将此操作符与 ! $ 运算符组合使用。
There is another option: for Apple to set up as a mobile operator itself, by leasing network capacity from an existing operator.
另一种选择是：苹果公司通过从现存的网络运营商，租借网络使用权来建立自己的网络。
As with the UNION operator, the join operator itself remains synchronous and is only able to process input from one leg of the join at a time.
和UNION操作符一样，连接操作符本身是同步的，每次只能处理来自连接操作符某一个分支的输入。
Step 4: All operators are binary, which means that the first operand is positioned before the operator, and the second operand is positioned after the operator.
步骤4：所有的操作符都是二元的，也就是说第一个操作数位于操作符之前，第二个操作符位于操作符之后。
You can also use the repeat operator, which you may recognize as the multiplication operator, to build up a bigger list from small segments.
您还可以使用重复运算符，可以将该运算符识别为乘法运算符，以便从小片段中构建更大的列表。
Each source operator is given a relevant name that is also reflected in the caption of operator in the canvas.
每个源操作符都会被分配一个相关的名称，在画布中，这个名称也反映在操作符的标题中。
The function of this operator is similar to the AND operator, but it only applies to the word immediately following it.
这个操作符的作用和AND差不多，但它只对紧跟着它的一个搜索词起作用。
These signals are then broadcast from operator to operator until they reach a network member in an area where the Internet functions.
然后，这些信号被一个操作员一个操作员地传递下去，直到抵达一个网络正常的区域。
To get a more selective match for such cases, use either the enforce operator (+) or an explicit Boolean operator (AND) in the keyword search.
要在对这样的情况使用更多选择的匹配，需要在搜索关键词中使用强制操作符（+）或显式的逻辑操作符（AND）。
Note: the details window can also be opened by clicking on the dropped operator or from the context menu of the operator.
注意：也可以单击被拖放的操作符或者从操作符上下文中打开细节窗口。
Precedence or operator strength determines order of evaluation; an operator with higher precedence is evaluated before one of lower precedence.
优先级或者说操作符的强度决定求值顺序；优先级高的操作符比优先级低的操作符先求值。
An operation can be a relational operator, a system - or user-defined function, or an SQL operator, such as GROUP BY, ORDER BY, and so on.
操作可以是一个关系运算符，或者系统或用户定义的函数，也可以是一个sql操作符，例如GROUPBY、ORDER BY等。
When the first source operator is dropped on an empty canvas, a publish operator is automatically created.
当将第一个源操作符拖放到空白的画布上时，会自动创建一个发布操作符。
Like the existing relational index scan operator for relational indexes (IXSCAN), the XISCAN operator performs lookups or scans on XML indexes.
类似于现有的用于关系索引的关系索引扫描操作符(IXSCAN)，XISCAN操作符在xml索引上执行查找或扫描。
As you've seen, operator AD hoc polymorphism, or operator overloading to the rest of us, can be quite powerful if carefully employed and documented.
可以看到，操作符的即时多态，或操作符重载，对于我们来说，如果小心使用和记录，会非常强大。
The row ID scan (RIDSCN) operator then scans these row IDs, triggers row prefetching, and passes the row IDs to the fetch operator.
然后行id扫描(RIDSCN)操作符将扫描这些行，触发行预取，并将行id传递到fetch操作符。
The UNION operator consumes the data a row at a time from the SHIP buffer and flows the row upwards to the application through the RETURN operator.
UNION操作符每次使用SHIP缓冲区中的一行数据，并将这行数据通过RETURN 操作符上传到应用程序。
The le operator in the last element below is an example of a value comparison operator.
下面最后一个元素中的le运算符就是值比较运算符的一个例子。
In this case, the exponentiation operator is another form of binary operator so the existing BinaryOp case class serves.
在本例中，求幂运算符是另一种形式的二进制运算符，所以使用现有BinaryOp case类就可以。
Listing 15 applies the decltype operator on a variable and shows the usage of the operator with an expression.
清单15对一个变量应用decltype操作符，演示对表达式使用这个操作符的方法。
Here, the entire query is executed by the Oracle server, so you only see a RETURN operator without any SHIP operator.
在这里，整个查询都由Oracle服务器执行，所以只能看到一个return操作符，而看不到任何ship操作符。
The extractor operator will extract the association rules form the PMML model created by the Associations operator and provides them in a relational table structure.
这个提取器操作符能从pmml模型(由associations操作符创建)提取关联规则并通过关系表结构提供这些规则。
The last operator in the flow is a table Target operator pointing to a table where you want to write the annotations.
数据流中的最后一个操作器是指向您希望写入注释的表的TableTarget操作器。
The = operator I used in the above query, for instance, is analogous to the $eq operator in MongoDB.
例如，我在上面查询中使用的 =运算符就类似于 MongoDB 中的 $eq 运算符。
The goal here is to avoid accidentally using the single-equals assignment operator instead of the double-equals comparison operator
目标在于避免意外地使用单等号赋值运算符而非双等号比较运算符
In the view below the editor, the Execution Status TAB is selected and on the right part of the view, you can see the table output of the last operator, that is, the Target table operator.
在编辑器下方的视图中，ExecutionStatus选项卡被选中并且在这个视图的右侧，还可以看见最后一个操作符(即Targettable操作符)的表输出。
When you're building a list, you use the: operator, called the cons operator (for construct).
在构建列表时，使用：操作符，叫做构造(cons)操作符(用来构造)。
If the character is an operator, pop operators until you reach an opening parenthesis, an operator of lower precedence, or a right associative symbol of equal precedence.
如果字符是个操作符，弹出(pop)操作符，直至遇见开括号(openingparenthesis)、优先级较低的操作符或者同一优先级的右结合符号。
In this installment of Practically Groovy, I introduce you to Groovy's support for operator ad-hoc polymorphism, also known as operator overloading.
在实战groovy的这一期中，我将介绍Groovy对操作符即时多态(也称为操作符重载)的支持。
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