大约有 46,000 项符合查询结果(耗时:0.0677秒) [XML]

https://stackoverflow.com/ques... 

Is there any difference between GROUP BY and DISTINCT

...the SQL Server is smart enough to realize that if you are using "Group By" and not using any aggregate functions, then what you actually mean is "Distinct" - and therefore it generates an execution plan as if you'd simply used "Distinct." However, I think it's important to note Hank's response as w...
https://stackoverflow.com/ques... 

Ternary operator (?:) in Bash

... why the [[ and ]] ? it works just as well like this : [ $b = 5 ] && a="$c" || a="$d" – kdubs Oct 29 '14 at 14:57 ...
https://stackoverflow.com/ques... 

How to grep (search) committed code in the Git history

...ommit content (i.e., actual lines of source, as opposed to commit messages and the like), you need to do: git grep <regexp> $(git rev-list --all) git rev-list --all | xargs git grep <expression> will work if you run into an "Argument list too long" error. If you want to limit the sea...
https://stackoverflow.com/ques... 

How to develop Desktop Apps using HTML/CSS/JavaScript? [closed]

...onally. I am a web developer, a coworker of mine recently left for Spotify and said he will be working mostly in JavaScript for the Spotify Desktop app. He said it uses "Chrome frame" and everything inside is done like a web app (HTML/JS/CSS). ...
https://stackoverflow.com/ques... 

BeanFactory vs ApplicationContext

I'm pretty new to the Spring Framework, I've been playing around with it and putting a few samples apps together for the purposes of evaluating Spring MVC for use in an upcoming company project. So far I really like what I see in Spring MVC, seems very easy to use and encourages you to write classes...
https://stackoverflow.com/ques... 

LINQ order by null column where order is ascending and nulls should be last

... This Worked to order fields with values on top and null fields on bottom i used this : orderby p.LowestPrice == null, p.LowestPrice ascending Hope helps someone. – shaijut Sep 27 '15 at 11:32 ...
https://stackoverflow.com/ques... 

Submitting a form on 'Enter' with jQuery?

I have a bog-standard login form - an email text field, a password field and a submit button on an AIR project that's using HTML/jQuery. When I hit Enter on the form, the entire form's contents vanish, but the form isn't submitted. Does anyone know if this is a Webkit issue (Adobe AIR uses Webkit ...
https://stackoverflow.com/ques... 

How to format strings using printf() to get equal length in the output?

...o functions, one which produces messages like Starting initialization... and another which checks return codes and outputs "Ok" , "Warning" or "Error" . However, the output that is produced is of the different length: ...
https://stackoverflow.com/ques... 

Create directory if it does not exist

... answered Jun 4 '13 at 6:50 Andy ArismendiAndy Arismendi 42.8k1515 gold badges9191 silver badges113113 bronze badges ...
https://stackoverflow.com/ques... 

How to convert numbers between hexadecimal and decimal

How do you convert between hexadecimal numbers and decimal numbers in C#? 17 Answers 1...