A functional index incurs the additional cost of function execution.
函数索引还会产生额外的函数执行开销。
This sounds like a lot of conditions, but so far it is straightforward: using the column, the index can be found and the spatial predicate is known using the function.
这听起来好像有一大堆的条件，但还是比较简单的：通过使用列可以找到索引，通过使用函数可以知道空间谓词。
As you can see, the syscall function includes as its first argument the index of the system call table to use.
正如您所见，syscall函数使用了系统调用表中使用的索引作为第一个参数。
The position() function returns the one-based index of the node within the node set.
position()函数返回节点集中节点的基于 1的索引。
It says that the function must be used in an expression involving the comparison operation and that the search method "equals" of the index extension hash_index is referred to.
这说明，该函数必须在一个涉及比较操作并且引用了索引扩展hash _ index的搜索方法“equals”的表达式中使用。
The MON_GET_INDEX table function and db2pd utility provide the same index metrics (number of index scans and index only scans).
MON_GET_INDEX表函数和db2pd实用程序提供相同的索引度量指标（扫描索引和仅扫描索引的数量）。
In the XPath example, the last function returns the index of the last matched element, which you use in square brackets.
在XPath例子中，last函数返回最后匹配元素的索引(用在方括号中)。
To see if the string ing is present in the file text, use the index function, which returns the location of the first occurrence of ing so that you can use it for further string processing.
若要查看字符串ing是否出现在文件文本中，请使用index函数，该函数返回ing首次出现的位置，这样您就可以使用它来进行进一步的字符串处理。
With the syscall function, you can call a system call by specifying its call index and a set of arguments.
使用syscall函数，您可以通过指定它的调用索引和一组参数来调用系统调用。
If you use XML predicates in the XMLQUERY function in the select clause of an SQL statement, these predicates do not eliminate any rows from the result set and therefore cannot use an index.
如果在sql语句的select子句的XMLQUERY函数中使用xml谓词，则这些谓词不会从结果集中排除任何行，因此不能使用索引。
Inverted Index: The map function parses each document, and emits a sequence of pairs.
反向索引：map函数对每个文档进行索引分析，产生一串数据对。
That is, you pass the index of the repeat as the argument, and the function returns the current item in that repeat.
也就是，将repeat的索引作为参数传递给该函数，然后函数将返回这个repeat元素中的当前项目。
If the data is stored sequentially, the time to find the item is proportional to the size of the list. For each element, a hash function calculates a number, which is used as an index into the table.
如果数据是序列存储的，从中查询一个项的时间取决于数据列的大小。
The changing law of retention index with temperature from chromatographic thermal function resulted from the variation of the different entropy and enthalpy during the chromatographic separation.
并从色谱热力学函数分析了保留指数随温度变化规律的主要原因是由于在色谱分离过程中不同的熵变和焓变所造成的。
Notice the use of the index function within the at attribute of the insert and delete actions.
请注意insert和delete动作的at属性内index函数的使用。
The index function is again used to specify the currently-selected row of the repeat as the one on which the setvalue action will occur.
index函数会被再次使用来指定repeat的当前选中行作为发生setvalue操作的行。
Using this table function instead of db2pd simplifies evaluation of the results because the index IDs (IIDs) can be converted to index names by joining with the SYSCAT.INDEXES catalog view.
使用表函数取代 db2pd实用程序简化了结果计算，因为可以通过与 SYSCAT.INDEXES 目录视图结合将索引IDs (IIDs)转换成索引名。
This paper research the technology using rice to replace wheat flour to produce soy sauce and reported the function index determine analysis result of the sauce which rice replace flour.
本文研究了用大米代替面粉生产酱油的工艺并对酿造出的酱油的性能指标测定方法的结果作了报道。
To make it reentrant, the static data, the index variable, needs to be maintained by the caller. The reentrant version of the function could be implemented like this.
为了让它可重入，静态数据，即index，需要由调用者来维护。
This article discussed the process of changing a journal for searching into an electronic version with browsing function, especially the algorithm of the creation of the index file.
本文介绍了实现检索工具期刊的提供浏览功能的电子版本的过程，着重说明了形成“目录文件”的算法思想。
In most cases neither of these situations exist, and the hash function will need to compress a larger range of keys into a smaller range of index Numbers.
大多数情况下，这种情况不会发生，哈希函数需要把较大的关键字值范围压缩成较小的数组下标的范围。
Stockpile availability is an important index which weighing the stockpile missile fighting function, also is an important parameter which weighting the effectiveness of missile periodical detection.
储存可使用率是衡量导弹战斗性能的重要指标，也是衡量其定期检测有效性的重要参数。
As the target function of the optimization model, the system entire efficacy was calculated by power index and fuzzy weight methods.
采用幂指数法结合模糊权重评价法计算系统总体效能，并以此作为优化的目标函数。
Objective:To validate the feasibility and value of myocardial performance index (MPI) for assessing ventricular function in patients with functionally single ventricle.
目的：探讨心肌工作指数（MPI）评价单心室心功能的可行性及应用价值。
Then find the projection value which can optimize the projection index function via the whole optimization characteristic of AGA.
然后利用遗传算法全局寻优的特点，寻找出使投影指标函数达到最优的投影值；
It decomposed the reliability function of complex system and mapped to performance index. Then, the performance index mapped to components and constructed tree modeling in turn.
它将复杂系统可靠性功能分解并映射到性能指标上，再将性能指标映射到部件上，依次构成树状模型。
At first, through analyse the influence on the soil, crops, groundwater and function of water body of sewage, the index system of sewage irrigation security appraisal have been set up.
首先，通过污水对土壤、农作物、地下水以及水体功能的影响分析，建立了污水灌溉安全性评价的指标体系。
The utility function model of friendship index expounds the prerequisite and degree of altruistic, egoistic, harm and ride-free behavior that they conform to economic law.
行为的敌友指数效用函数模型，在个体水平上说明了利他、利己、损人和搭便车行为发生的条件和程度，指出它们都是符合经济学规律的。
The utility function model of friendship index expounds the prerequisite and degree of altruistic, egoistic, harm and ride-free behavior that they conform to economic law.
行为的敌友指数效用函数模型，在个体水平上说明了利他、利己、损人和搭便车行为发生的条件和程度，指出它们都是符合经济学规律的。
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