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SQL Server dynamic PIVOT query?
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256
Dynamic SQL PIVOT:
create table temp
(
date datetime,
category varchar(3),
amount...
Linux进程与线程总结 [推荐] - C/C++ - 清泛网 - 专注C/C++及内核技术
...概念混淆，因为每个进程都拥有其独立的内存空间。
1.2．Linux线程
实际上线程是由进程演化而来的，一个标准的进程可以看成只有一个控制线程，线程才是真正的执行单元，真正消耗CPU的时间片，所以该进程在同一时刻只做...
Sleep Command in T-SQL?
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624
Look at the WAITFOR command.
E.g.
-- wait for 1 minute
WAITFOR DELAY '00:01'
-- wait for 1 s...
How to “pretty” format JSON output in Ruby on Rails
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1025
Use the pretty_generate() function, built into later versions of JSON. For example:
require 'j...
In practice, what are the main uses for the new “yield from” syntax in Python 3.3?
...nd preclude a whole bunch of new features from being implemented in Python 2.x.
What yield from does is it establishes a transparent bidirectional connection between the caller and the sub-generator:
The connection is "transparent" in the sense that it will propagate everything correctly too, not...
How can I break an outer loop with PHP?
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274
In the case of 2 nested loops:
break 2;
http://php.net/manual/en/control-structures.break.p...
Difference between JSP EL, JSF EL and Unified EL [closed]
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2 Answers
2
Active
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Gem::LoadError for mysql2 gem, but it's already in Gemfile
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247
If you have this error when upgrading to rails 4.2.4 (also with rails 4.1.5) try using this ve...
What's the difference between Sender, From and Return-Path?
...y round?
– Ethan Leroy
Feb 6 '15 at 22:03
7
Imagine some VIP that has an assistant managing their...