他本来也可以删掉很多重复的语句,省去很多页数。
He could also have cut out much of the repetition and thus saved many pages.
程序一旦能工作了,你就应该把一些发挥『脚手架作用』的代码删掉,并且把重复的语句改写成精简版本,但尽量别让程序变得难以阅读。
Once the program is working, you might want to remove some of the scaffolding or consolidate multiple statements into compound expressions, but only if it does not make the program difficult to read.
因此,如果一个访问计划被重用,则数据库服务器重复执行相应sql语句所需的CPU资源将减少。
So if an access plan is reused, a database server requires less CPU resources to execute the corresponding SQL statement repeatedly.
在许多数据库应用程序中,我们需要重复发出相同的语句,只不过使用的值有时略有不同。
In many database applications we need to repeatedly issue the same statement, sometimes with slightly different values.
有时候,使用这种语句比嵌套的for循环或if语句更好,可以减少重复的代码而且结构更清楚。
Using such a statement can sometimes be a better route than nested for loops or if statements to cut down on repetitive code or just for better structure.
forall语句为阵列中的每一个元素重复另外一个语句。
The FORALL statement repeats another statement for each of the elements in an array.
但是,在最终的输出版本中或调和版本中,我仅看到该语句一次,并没有重复看到。
In the final output version, however, or the reconciliation version, I see the statement only once, not duplicates.
如果重复地执行相同的insert语句,则该语句的访问计划(通常)会进入到包缓存中,这样就免除了编译的开销。
If the same INSERT statement is executed repeatedly, its access plan will (usually) be found in the package cache and the compilation cost is avoided.
而将这些语句组合成一条单独的语句可以避免重复的初始化和销毁步骤,从而提升总体性能。
Combining the statements into a single one avoids excessive initializations and destruction steps, resulting an in overall performance boost.
参数化查询的主要性能好处是优化器可以制定在重复执行语句时能够再使用的存取路径。
The key performance benefit of parameterized queries is that the optimizer can formulate an access path that can be reused over repeated executions of the statement.
清单13显示了FORALL语句的示例,其针对阵列部门中的每一个元素重复INSERT。
Listing 13 shows an example of a FORALL statement that repeats an INSERT for each of the elements in arrays departments.
然而,每个语句的访问计划基本相同,重复的计算是一种资源浪费。
However, the access plan for all the statements was likely the same, so it was a waste of resources to repeatedly calculate it.
换成带有参数标记的语句,一次准备,重复执行,这样做是十分可取的。
With one that has parameter markers and is prepared once and repeatedly executed.
为了控制收集统计信息的样本集,以及可以重复使用相同的样本集,需要使用下列语句。
Example 30. To control the sample set on which the statistics will be collected and to be able to repeatedly use the same sample set, use the following.
bash中的while循环可以重复执行语句一定的次数,或者一直执行到满足某一条件为止。
A while loop within bash allows you to execute a statement a given number of times, or until a certain condition is met.
如果您想多次重复发出同一条语句,那么odbc_exec函数是一种代价高昂的方法,因为它每次都要编译并执行该语句。
If you want to reissue the same statement multiple times, the odbc_exec function is an expensive approach because it prepares and executes the statement every time.
我还记得最后的语句,像神秘的戒律一样在每种写法中加以重复:英雄们就这样战斗,可敬的心胸无畏无惧,手中的钢剑凌厉无比,只求杀死对手或者沙场捐躯。
I remember the final words, repeated at the end of each version like a secret command: "Thus the heroes fought, with tranquil heart and bloody sword. They were resigned to killing and to dying."
它的特征表现为语音、音节、单词或语句的不自主重复或延长及频繁的停顿以致影响语言的节奏顺畅。
It is characterized by the involuntary repetition or prolongation of sounds, syllables, words, or phrases, as well as frequent pauses, impeding the rhythmic flow of speech.
如果重复的声明有一个初始值,那么它担当的不过是一个赋值语句的角色。
If the repeated declaration has an initializer, it ACTS as if it were simply an assignment statement.
与人交谈中言语减少,重复一些单调的语句,或满篇文字只反复说一个无意义的问题,如“人为什么要吃饭?”
Verbal conversation with people less monotonous repetition of the statement, or full text articles repeatedly said only a meaningless questions like "Why do people eat?"
我的留言本上慢慢都是重重复复的语句,重重复复的祝福,很感动。
My message is heavy on the slowly repeat complex statements, and repeat after the blessing of heavy, very moving.
的留言本上慢慢都是重重复复的语句,重重复复的祝福,很感动。
My message is heavy on the slowly repeat plex statements, and repeat after the blessing of heavy, very moving.
如果你想要改进你的发音,请经常暂停比赛并且努力尽可能地重复英语句子。
If you want to improve your pronunciation, pause the game frequently and try to repeat English sentences as well as you can.
用线性汇编语言重新设计程序结构优化循环语句,实现读取参考样本、滤波处理和移位裁剪算法的优化,避免重复读取同一个参考样本的情况。
This paper used the linear assembly language to re-design program structure and realized the optimization of reading reference samples, filter processing and transfer of cutting algorithm.
第三条语句缩放图像,第四条语句用缩放后图像的重复副本填充椭圆。
The third statement scales the image, and the fourth statement fills the ellipse with repeated copies of the scaled image.
第三条语句缩放图像,第四条语句用缩放后图像的重复副本填充椭圆。
The third statement scales the image, and the fourth statement fills the ellipse with repeated copies of the scaled image.
应用推荐