Which two statements are true about alerts? (Choose two.)A.Clearing an alert sends the alert to the alert history.B.Response actions cannot be specifi ...
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其他好文 时间:
2017-12-07 15:08:06
阅读次数:
125
Which three statements are true about multiple-row subqueries? (Choose three.)A. They can contain a subquery within a subquery.B. They can return mult ...
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其他好文 时间:
2017-11-30 15:04:49
阅读次数:
107
1、函数的定义 函数的定义形式如下: def <name>(arg1,arg2...argN): <statements> 函数的名字必须以字母开头,可以包括下划线。函数的目的是把一些复杂的操作隐藏,来简化程序的结构,使其容易阅读。函数在调用前,必须先定义。 2、函数的形参和实参 实参把它的值传递给 ...
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编程语言 时间:
2017-11-21 23:51:23
阅读次数:
226
译者按: 试着不用if撸代码,是件很有趣的事,而且,万一你领会了什么是“数据即代码,代码即数据”呢? 原文: Coding Tip: Try to Code Without If-statements 译者: Fundebug 为了保证可读性,本文采用意译而非直译。另外,本文版权归原作者所有,翻译仅 ...
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其他好文 时间:
2017-11-20 17:54:45
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143
Which two statements about the SQL Management Base (SMB) are true? (Choose two.)A. It contains only SQL profiles generated by SQL Tuning Advisor.B. It ...
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其他好文 时间:
2017-11-17 14:56:12
阅读次数:
117
Which three statements about performance analysis by SQL Performance Analyzer are true?(Choose three.)A. It detects changes in SQL execution plans.B. ...
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其他好文 时间:
2017-11-17 14:49:53
阅读次数:
102
When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics.Which two statements describe the ...
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其他好文 时间:
2017-11-17 13:24:31
阅读次数:
164
Which statements are true regarding table compression? (Choose all that apply.)A. It saves disk space and reduces memory usage.B. It saves disk space ...
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其他好文 时间:
2017-11-16 18:40:29
阅读次数:
112
You have enabled resumable space allocation in your database by setting theRESUMABLE_TIMEOUT parameter set to a nonzero value.Which three statements a ...
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其他好文 时间:
2017-11-16 17:22:42
阅读次数:
129
检查一组代码从执行开始到执行完毕的时间。#!/bin/bash
start=$(date+%s)
commands;
statements;
end=$(date+%s)
difference=$((end-start))
echoTimetakentoexecutecommandsis$differenceseconds.
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系统相关 时间:
2017-11-16 17:13:14
阅读次数:
170