General requirements of spatial query in GIS are briefly outlined in this paper. A Variable query Algebra is formally defined for spatial query of GIS.
本文简单分析了满足GIS空间查询代数的一般要求，然后形式化地定义了一种适合于GIS空间查询的变量查询代数。
Since there are no steps following the variable name, this query expression results in a single node which happens to be the current node.
由于在变量名后面没有任何步骤，因此该查询表达式将产生一个单一节点，即正好是当前的节点。
To start at any other node in the DOM, start the query expression with a variable name that will be associated with that node when the query expression is interpreted.
在DOM中的任何其他节点开始，使用一个变量名开始查询表达式，在解释查询表达式时，变量名将与该节点关联。
As I've previously mentioned, DB2 V8.2.2 adds the ability to query the current (effective) DB2 registry variable configuration through a call to a simple table function.
正如我前面所提到的，DB 2V8.2.2添加了通过调用简单的表函数查询当前(有效)DB 2注册表变量配置的功能。
The REOPT bind option defers query optimization until input variable values are available at OPEN time.
REOPT绑定选项将查询优化推迟到OPEN时有可用输入变量的时候。
If the resolved context variable content is null, no replacement occurs and the variable name remains unchanged in the query string (including the "%" signs).
如果解析后的上下文变量内容为空，则不会发生替换，并且变量名称在查询字符串中保持不变(包括“%”符号)。
Named graphs are used within a SPARQL query with the graph keyword, in conjunction with either a graph URI or a variable name.
在SPARQL查询内部用GRAPH关键字调用命名图，后面是图的URI或变量名。
Notice also that Listing 5 adds a new variable to the query string, env.
还要注意，清单5将一个新的变量添加到查询字符串env。
It defines how the data returned by the query activity will be transformed before it will be stored in the variable EBS11iAccounts.
它定义了查询活动返回的数据，以及如何在储存在变量ebs11iaccounts前进行转换。
Within the query string you have a GString variable accessing the global context.
在查询字符串的内部有一个访问全局上下文的GString变量。
SELECT: Returns a set of variable bindings that satisfy the query (similar to SQL SELECT).
SELECT：返回满足查询的一组变量绑定(类似SQL SELECT)。
The db2_execute statement returns true or false when completed, and the result set of the query must be bound to a variable before the SQL statement is run.
db2_execute语句在完成时将返回true或false，而且必须将查询的结果集绑定到变量，然后才能运行sql语句。
The password variable might be used in the query shown in Listing 5.
password变量可能会在清单5中的查询中使用。
Columns surrounded by quotation marks and prefixed with the "t" variable are based on XML element values, as the subsequent lines of the query indicate.
查询中后面的几行表明，用引号括起来、并且以变量“t ”为前缀的列是基于XML元素值的列。
In order to query the user's department number into host variable hv_depnot, use this statement.
要查询本地变量hv_depnot的用户部门编号，使用以下语句。
Capturing the output of the SQL query in a workflow-level variable.
在工作流级变量中捕获SQL查询的输出。
This is bound to the url variable, forming a query solution.
这被绑定到url变量，形成查询结果。
After the local variable declaration, the subroutine will make a pass through every query word specified searching for a metaphone match in the name or jobresponsibilities hashes.
声明局部变量后，子例程将遍历每个指定查询词，搜索name或jobresponsibilities散列中的变音位匹配。
In Viper 2, this limitation has been removed and now you are able to pass a runtime variable to a relational query embedded inside the XQuery.
在Viper2中，这个限制已经消除了，现在可以向XQuery中嵌入的关系查询传递运行时变量。
The SELECT clause specifies what the query should return — in this case, a variable named url.
select子句指定查询应当返回的内容，在这个例子中，返回的是名为url的变量。
In the query, the? Film variable stands in for the film's URI identifier.
在此查询内，？film变量代表的是电影的URI标识符。
In the DB2 for Linux, UNIX, and Windows environment, you may find that runtime query performance is related to input variable values that are passed to statements at OPEN time.
在DB 2for Linux,UNIX,andWindows环境中，您可能会发现运行时查询性能与OPEN时传递给语句的输入变量值有关。
The SELECT part declares the variables to be output by the query -- in this case, the variable named definition.
SELECT部分声明查询要输出的变量 —在本例中，是名为definition的变量。
Since in the query the variable was defined as xs: string, you want the type XQItemType.XQBASETYPE_STRING.
由于查询中变量被定义为xs：string，因此需要XQItemType . XQ basetype_string类型。
Similarly, when a DB read or update is performed, a SQL query result is stored in the $dbResult variable, which is also a global-scoped variable.
同样，在执行数据库读或更新时，将一个SQL查询结果存储在 $dbResult变量中，这也是一个全局变量。
Listing 4 USES Doctrine to perform a query for the records in the books database table, setting the result as a view variable for the IndexSuccessView.
清单4使用Doctrine来执行一个查询，旨在得到书籍数据库表中的记录，将结果设置为IndexSuccessView的一个视图变量。
The var and scope attributes specify a scoped variable for storing the results of the query.
var和scope属性规定存储查询结果的scoped变量。
Smartly, fish provides the — query option to test whether a variable is defined.
fish提供——query选项来检查是否定义了一个变量。
If the variable is set, set — query returns a status code of 0, indicating that no error occurred; otherwise, it returns a 1.
如果已经设置了此变量，set——query返回状态码0，这表示没有出现错误；否则，返回1。
Indeed, only one line of code needs to be modified — the definition of the query variable.
实际上，只需要修改一行代码——query变量的定义。
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