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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 ...
分类:其他好文   时间:2017-12-07 15:08:06    阅读次数:125
051-139
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 ...
分类:其他好文   时间:2017-11-30 15:04:49    阅读次数:107
python2函数
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 ...
分类:编程语言   时间:2017-11-21 23:51:23    阅读次数:226
你试过不用if撸代码吗?
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 ...
分类:其他好文   时间:2017-11-20 17:54:45    阅读次数:143
053-255
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 ...
分类:其他好文   时间:2017-11-17 14:56:12    阅读次数:117
053-493
Which three statements about performance analysis by SQL Performance Analyzer are true?(Choose three.)A. It detects changes in SQL execution plans.B. ...
分类:其他好文   时间:2017-11-17 14:49:53    阅读次数:102
053-487
When executing a SQL workload, you choose to generate execution plans only, without collecting execution statistics.Which two statements describe the ...
分类:其他好文   时间:2017-11-17 13:24:31    阅读次数:164
053-105
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 ...
分类:其他好文   时间:2017-11-16 18:40:29    阅读次数:112
053-275
You have enabled resumable space allocation in your database by setting theRESUMABLE_TIMEOUT parameter set to a nonzero value.Which three statements a ...
分类:其他好文   时间:2017-11-16 17:22:42    阅读次数:129
16/11/2017 shell学习笔记
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.
分类:系统相关   时间:2017-11-16 17:13:14    阅读次数:170
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