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Formatting Numbers by padding with leading zeros in SQL Server
We have an old SQL table that was used by SQL Server 2000 for close to 10 years.
13 Answers
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What does .SD stand for in data.table in R
...his is your data.table:
DT = data.table(x=rep(c("a","b","c"),each=2), y=c(1,3), v=1:6)
setkey(DT, y)
DT
# x y v
# 1: a 1 1
# 2: b 1 3
# 3: c 1 5
# 4: a 3 2
# 5: b 3 4
# 6: c 3 6
Doing this may help you see what .SD is:
DT[ , .SD[ , paste(x, v, sep="", collapse="_")], by=y]
# y V1
# 1...
PHP Function Comments
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answered Aug 21 '09 at 4:10
Josh LeitzelJosh Leitzel
13.6k1010 gold badges5555 silver badges7676 bronze badges
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Check if value is in select list with JQuery
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180
Use the Attribute Equals Selector
var thevalue = 'foo';
var exists = 0 != $('#select-box opti...
How to determine the number of days in a month in SQL Server?
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116
You can use the following with the first day of the specified month:
datediff(day, @date, dat...
How to set 'auto' for upper limit, but keep a fixed lower limit with matplotlib.pyplot
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109
You can pass just left or right to set_xlim:
plt.gca().set_xlim(left=0)
For the y axis, use...
JS文字卷动效果的调用函数：startmarquee - 更多技术 - 清泛网 - 专注C/C++及内核技术
...隔越大，滚动速度越慢；
if(!p){ o.scrollTop += 1;}
//滚动停止或开始，取决于p传来的布尔值；
}
function scrolling(){
if(o.scrollTop%lh!=0){
//如果不被整除，即一次上移的高度达不到lh，则内容会继续...
Referring to a file relative to executing script
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117
See: BASH FAQ entry #28: "How do I determine the location of my script? I want to read some co...
理解和配置 Linux 下的 OOM Killer - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...B, anon-rss:3744kB, file-rss:80kB
httpd invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0
httpd cpuset=/ mems_allowed=0
Pid: 8911, comm: httpd Not tainted 2.6.32-279.1.1.el6.i686 #1
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21556 total pagecache pages
21049 pages in swap cache
Swap cache stats: add ...
What's the fastest way to convert String to Number in JavaScript?
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195
There are 4 ways to do it as far as I know.
Number(x);
parseInt(x, 10);
parseFloat(x);
+x;
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