Standard Query Operators Overview.
标准查询运算符概述。
Morphia's filter operators closely map to the query operators used in MongoDB queries.
Morphia的筛选运算符紧密地映射到用于MongoDB查询的查询运算符。
To execute XML queries, DB2 9 introduces three new internal query operators called XSCAN, XISCAN, and XANDOR.
为了执行XML查询，DB 29引入了三个新的内部查询操作符，名为XSCAN、XISCAN和XANDOR。
The following example shows some query operators whose source sequence is probably expected to be ordered.
下面的示例演示一些可能需要对其源序列进行排序的查询运算符。
This is sometimes necessary; for example some query operators require an ordered source sequence to produce correct results.
这有时候是必要的，例如某些查询运算子需要已排序的来源序列，才能产生正确的结果。
Specifically, it looks for query operators or combinations of operators that typically cause a query to execute more slowly in parallel mode.
具体而言，它将查找通常会导致查询在并行模式下运行更慢的查询运算符或运算符组合。
In addition, DB2 can leverage new query and join operators, as well as new index processing techniques, to provide strong runtime performance for queries involving XML documents.
另外，DB 2可以利用新的查询和联结操作符以及新的索引处理技术，为涉及XML文档的查询提供更好的运行时性能。
An operator class is used in conjunction with the access method to specify the operators used for building the index and during query optimization.
将操作符类与访问方法结合使用，可以指定创建索引和优化查询时使用的操作符。
Can these operators be nested in parenthesis and mixed with the other query language operators?
这些操作符会被嵌套在括号中并与其他的查询语言操作符混合在一起吗？
Look at the SPARQL spec to learn in detail about SPARQL's built-in functions, operators, query forms, and syntax, or to see many more example SPARQL queries.
请参阅SPARQL的规范，详细学习SPARQL的内置函数、操作符、查询格式和语法，或者参阅更多SPARQL查询示例。
XML query evaluation: Execution plans and new operators.
XML查询计算：执行计划和新操作符。
Now take a look at the three new operators and how they work together with XML indexes in a query execution plan.
现在看一下这三个新操作符，以及它们与xml索引在执行计划中是如何工作的。
An expression is defined as a series of one or more query terms joined by the Boolean operators and or or.
一个表达式就是一系列由布尔运算符and或or连接的一个或更多查询项。
A query plan is a sequence of operators.
一个查询计划是一个操作符序列。
Invalid query: make sure parenthesis are balanced and the custom query consists only of valid criteria Numbers and the Boolean operators and, or, and NOT.
查询无效：确保括号完整，自定义查询只包含有效标准数字以及布尔型运算符and、OR和NOT。
The syntax and semantics for spatial query clauses are defined, and the implementation of spatial operators and spatial query are also introduced.
定义了空间查询子句的语法和语义，编程实现了相关空间算子的功能。
The derived relational algebra operators are widely used in the relational database query languages.
关系代数的派生算子在关系数据库查询语言中得到了广泛应用。
Constants cannot be initialized with query expressions because constants may only be initialized with some combination of literals, named constants, and mathematical operators.
常量不能用查询表达式进行初始化，因为常量只能用文本、命名常量和数学运算符的某一组合进行初始化。
This example shows how to specify the merge options that will apply to all subsequent operators in a PLINQ query.
此范例说明如何指定会套用至PLINQ查询中所有后续运算子的合并选项。
It first examines the shape of the query and the various operators that comprise it.
它会先检查查询的型态和查询中的各种运算子。
You can use a variety of operators in constructing expressions for your query, including mathematical and text operators.
在建构查询的运算式时可以使用各种运算子，包括数学和内容运算子。
Wherever you use a column in a query, you can also use an expression that can consist of any combination of columns, literals, operators, and functions.
在查询中使用列的任何位置，都还可使用由列、文本、运算符和函数的任意组合组成的表达式。
Wherever you use a column in a query, you can also use an expression that can consist of any combination of columns, literals, operators, and functions.
在查询中使用列的任何位置，都还可使用由列、文本、运算符和函数的任意组合组成的表达式。
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