图4展示了一个在联邦服务器使用嵌套循环连接操作符来计算这个查询的计划。
Figure 4 shows a plan using the nested loop join operations at the federated server to evaluate this query.
可以根据连接操作符的细节判断连接的类型(INNER、RIGHT或LEFT)。
You can tell the type of join (INNER, RIGHT, or LEFT) by the details of the join operator.
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。
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.
我希望这些能够充分的解释连接操作符的基本概念和在PHP里的作用,以及我对这个基本操作的经验。
I hope this sufficiently explains concatenation in general, how it relates to PHP, and my experience with using this basic operator.
在随后的数据流操作中,您将使用一个连接操作符确保整个XML账户记录(包含在info列中)被填充到目标数据仓库表中。
In a subsequent data flow operation, you'll use a join operator to ensure that full XML account records (contained in the INFO column) are fed into the target data warehouse table.
MERGESCAN等连接操作符和(在某些情况下)NESTEDLOOP也可以通过同时执行连接操作符的内分支和外分支而从异步中获益。
Join operators such as HASH, MERGE SCAN and (in some situations) NESTED LOOP can also benefit from asynchrony by simultaneously executing the inner and outer legs of the join operator.
对于这个示例,使用数据流操作符输出端的蓝色箭头定义无条件连接。
For this example, define an unconditional connection using the blue arrow on the output port of the data flow operator.
使用右上角的绿色对勾把第一个数据流操作符连接到第二个,这会建立有条件连接。
Connect the first data flow operator to the second using the green check mark in the upper right corner to make a conditional connection.
在没有异步的情况下,联邦union操作符首先开启蓝色分支,等待远程连接完成,然后获取它的结果集。
Without asynchrony, the federated UNION operator initiates the blue leg first, waits for the remote join to complete, and retrieves its result set.
您还看到从C 语言带来的简化,其中包括字符串连接、关联数组元素和合并操作符。
You'll also find some simplifications from C, which include string concatenation, associative array elements, and aggregation operators.
您可以连接表1中显示的元素(以及其他操作符)并加以组合使用,从而构建(非常)复杂的正则表达式。
You can string together the primitives in Table 1 (and other operators) and use them in combination to build (very) complex regular expressions.
同样地,NLJOIN并没有充当拥有两个输入的标准连接,而是协助XSCAN操作符来访问XML数据。
As such, the NLJOIN does not act as a classical join with two input legs, but facilitates access to the XML data for the XSCAN operator.
必要时,在数据流中设置断点,方法是在数据流中操作符之间的连接上单击右键,然后单击ToggleBreakpoint。
If desired, set breakpoints in your data flow by right-clicking on a connection between operators in your data flow and clicking Toggle breakpoint.
通过使用唯一的术语编号将表连接起来,为TableJoin操作符指定条件,术语编号为文本分析结果集中的SKILL_ID,和位于分类表中的TERM_ID。
Specify the condition for the table Join operator by connecting the tables using the unique term number, which is SKILL_ID in the result set of the text analysis and TERM_ID in the taxonomy table.
如果愿意,可以在数据流中设置断点。设置方法是右键单击数据流中操作符之间的连接并选择ToggleBreakpoint。
If desired, set breakpoints in your data flow by right-clicking a connection between operators in your data flow and selecting Toggle breakpoint.
要将命令command1的输出作为过滤器command2的输入,您需要使用管道操作符(|)连接两个命令。
In order to use the output of a command, command1, as input to a filter, command2, you connect the commands using the pipe operator (|).
现在,将一个 “FindDeviations”操作符拖到画布上tablesource旁边的位置,并将 table source的输出端连接到 “Find deviations” 的输入端。
Now, drag a "Find Deviations" operator onto the canvas next to the table source, and connect the output pin of the table source with the input pin of "Find deviations".
语句6用or操作符连接两个命令:第二个命令(echo)只在第一个命令失败的情况下执行。
Statement 6 chains two commands with the or operator: the second command (echo) executes only if the first command fails.
带有IN或OR操作符的连接谓词。
如果不喜欢使用这么长的字符串连接语句,另一种方法是使用字符串格式操作符,可以使用下面这样的表达式。
If you prefer not to use a long string concatenation statement like this, an alternative is to use the string formatting operator which enables you to have an expression like.
在计划树中,只有包含出现在连接或联合操作符以下的远程语句的SHIP 操作符适合异步处理。
Only SHIP operators with associated remote statements that appear in the plan tree underneath join or union operators are candidates for asynchrony.
注意:可以使用产品源操作符的上下文菜单连接两个操作符。
Note: The product source operator's context menu can also be used to connect two operators.
该操作符提取账户id值,以驱动一个连接操作,该连接操作可以产生所需的结果集。
This operator extracts account ID values to drive a join operation that can produce the desired result set.
然后,它使用SHIP操作符读外表BAD_CREDIT,散列连接列的值,并检查为内表生成的查找表。
IT then reads from the outer table BAD_CREDIT using the SHIP operator, hashing the join column values, and checking in the lookup table generated for the inner table.
您可以连接和结合表1中的基本操作符(以及其他操作符)并进行组合来构建(非常)复杂的regex。
You can concatenate and combine the primitives in Table 1 (and other operators) and use them in combination to build (very) complex regexes.
把第一个数据流操作符的失败端(由红色的X表示)连接到它下面的email操作符。
Connect a failure of the first data flow (signified by the red X) to the Email operator below it.
SFE操作符将段起始地址和段大小相加。这个操作在连接时发生。
The operator evaluates to the segment start address plus the segment size. This evaluation takes place at linking time.
SFE操作符将段起始地址和段大小相加。这个操作在连接时发生。
The operator evaluates to the segment start address plus the segment size. This evaluation takes place at linking time.
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