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Convert Rows to columns using 'Pivot' in SQL Server
...ATH(''), TYPE
).value('.', 'NVARCHAR(MAX)')
,1,1,'')
set @query = 'SELECT store,' + @cols + ' from
(
select store, week, xCount
from yt
) x
pivot
(
sum(xCount)
for...
How to run a single test from a rails test suite?
How can I run a single test from a rails test suite?
12 Answers
12
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static const vs #define
...60 may actually sometimes be a sort of partial exception. Some instruction sets have the ability to encode integers or a subset of integers directly in the instruction stream. For example MIPs add immediate (cs.umd.edu/class/sum2003/cmsc311/Notes/Mips/addi.html). In this sort of case a #defined inte...
Get the closest number out of an array
...d, the efficiency improvements will be mostly unnoticable unless your data sets get much larger.
If you do want to try it that way (and can guarantee the array is sorted in ascending order), this is a good starting point:
<html>
<head></head>
<body>
<scri...
ZeroMQ实例-使用ZMQ(ZeroMQ)进行局域网内网络通信 - C/C++ - 清泛网 - 专注C/C++及内核技术
...址：http://zeromq.org/
百度网盘的下载地址 ： http://pan.baidu.com/s/1mg61em0
ZMQ API 的 百度网盘 下载地址 ： http://pan.baidu.com/s/1jGDqXfS
注：在本文写作时，ZMQ版本已经升级到4.1.0，不过影响没多大
2）解压源文件
tar zxf zero...
Allow user to set up an SSH tunnel, but nothing else
I'd like to allow a user to set up an SSH tunnel to a particular machine on a particular port (say, 5000), but I want to restrict this user as much as possible. (Authentication will be with public/private keypair).
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Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据 - 更多技术 - 清泛网 - ...
Mysql ibdata 丢失或损坏如何通过frm&ibd 恢复数据mysql存储在磁盘中，各种天灾人祸都会导致数据丢失。大公司的时候我们常常需要做好数据冷热备，对于小公司来说要做好所有数据备份需要支出...mysql存储在磁盘中，各种天灾人祸...
Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
In order to duplicate an array in JavaScript: which of the following is faster to use?
22 Answers
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How to change border color of textarea on :focus
... text-transform: uppercase;
user-select: auto;
-moz-box-shadow: inset 0 0 4px rgba(0,0,0,0.2);
-webkit-box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.2);
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
}
...
What does collation mean?
...e, I'd be stark raving mad if I still had to work with nation-specific charsets)
– Piskvor left the building
Dec 27 '10 at 13:09
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