Any attempt to perform a string comparison on an employee ID will then fail with a type error at query run time.
在查询运行时,尝试在雇员ID上执行字符串比较将遭到失败,并产生一个类型错误。
This ensures that the date comparison is used in the query, rather than standard string comparison.
这可以确保在查询中使用日期比较,而不是标准的字符串比较。
From the query formulation perspective, these changes affect queries with comparison constraints.
从查询公式的角度来看,这些变化影响带有比较约束的查询。
If you know that a book has at most one price element, you can write the query using XQuery value comparisons, which force the comparison operands to be singletons.
如果知道某个book至多有一个price元素,则可以使用XQuery的值比较来编写查询,这迫使进行比较的操作数是单个数。
The query compiler uses this information while checking any character comparison operations, to decide how to evaluate the operations.
查询编译器在检查字符比较操作时使用该信息,以决定如何执行操作。
On the other hand, comparison constraints can easily break the query, as illustrated in Listing 19.
另一方面,比较约束很容易破坏查询,如清单19所示。
DSLs dive into peoples' minds here because DSLs are a natural way to express variations, in comparison to a command-query API.
领域特定语言能够表达人们更深层次的思想是因为,和普通的命令-查询式API相比,领域特定语言以一种更加自然的方式表述领域内的不同变化。
If you are working with multiple tables, the Query and View Designer examines each search condition to determine whether the comparison you are making results in a join.
如果您处理多个表,则查询和视图设计器将检查每个搜索条件以确定正在进行的比较是否将导致联接。
We will not make predictions that are very long in comparison either to the partial query or to the other predictions for that partial query.
或者部分查询,或该部分查询的其他预测相比,在很长的,我们不会作出预测。
Through the comparison among some usual technologies used to query and display information in network database, a novel method is put forward for query information using XML technology.
通过比较几种常见的网络数据库查询技术的优劣,提出利用XML技术进行网络数据库的查询及分页显示。
It is a sequence comparison algorithm optimized for speed used to search sequence databases for optimal local alignments to a query.
它是一个最佳化的序列比对演算法:为了能让在搜寻序列资料库的速度加快,而做了个别电脑上比对要求的最佳化。
We will not make predictions that are very long in comparison either to the partial query or to the other predictions for that partial query. This is already our practice in English.
我们不会因为文字太长而自作聪明地做出预测,这就跟我们现在在英语中的做法是一样的。
We will not make predictions that are very long in comparison either to the partial query or to the other predictions for that partial query. This is already our practice in English.
我们不会因为文字太长而自作聪明地做出预测,这就跟我们现在在英语中的做法是一样的。
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