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Postgres: INSERT if does not exist already
...amples. (1) INSERT if not exists else NOTHING - INSERT INTO distributors (did, dname) VALUES (7, 'Redline GmbH') ON CONFLICT (did) DO NOTHING; (2) INSERT if not exists else UPDATE - INSERT INTO distributors (did, dname) VALUES (5, 'Gizmo Transglobal'), (6, 'Associated Computing, Inc') ON CON...
Where can I find the IIS logs?
... local IIS. I've created a website exactly as explained in their install guide, but am having some problems, and would like to see what the IIS log has to say. Embarrassingly enough, the problem is I can't find the log files!
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How to make input type= file Should accept only pdf and xls
...nspector. So in either case you need to check the file type on the server side (your second question).
Example:
<input type="file" name="upload" accept="application/pdf,application/vnd.ms-excel" />
To your third question "And when I click the files (PDF/XLS) on webpage it automatically sho...
Why are const parameters not allowed in C#?
...eason correctly about your code.
Const in C is a guideline; it basically means "you can trust me to not try to mutate this thing". That shouldn't be in the type system; the stuff in the type system should be a fact about the object that you can reason about, not a guideline to its usage.
Now, do...
nServiceBus vs Mass Transit vs Rhino Service Bus vs other?
... on discussions with suggestions 4 good alternatives 2 nServiceBus? What I mean. help folk on the messaging journey at the early stages. There r many good simple (free) ways 2 get started; doesnt really matter what you use as long as it's easy and ideally free; (free to play, and free to implement ...
What's the difference between ContentControl and ContentPresenter?
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Does that mean that, in general, I should probably use ContentPresenter inside my DataTemplates, because it's more light-weight (but functionally equivalent when used in a DataTemplate like this)? Then just use ContentControl as a base...
What is the difference between URI, URL and URN? [duplicate]
...ly:
A URL is a URI that identifies a resource and also provides the means of locating the resource by describing the way to access it
A URL is a URI
A URI is not necessarily a URL
I'd say the only thing left to make it 100% clear would be to have an example of an URI that is not an U...
Using Node.js only vs. using Node.js with Apache/Nginx
...s root, binding to port 80, and then relinquishing its root privileges, it means your Node app doesn't have to worry about it.
Serving static files like images, css, js, and html. Node may be less efficient compared to using a proper static file web server (Node may also be faster in select scenario...
Correct way of using JQuery-Mobile/Phonegap together?
...order of declaring script matters. First include jquery, THEN THIS CODE inside a script element, then jquery mobile js.
– Manish
May 18 '13 at 20:00
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Vsphere 6 集群上 安装 oracle rac 遇到的共享磁盘故障 - 数据库(内核) - ...
....com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2126079
主要有两个方面的改变
第一 改变磁盘的模式为独立—永久模式
第二 开启多写入模式
打开虚拟机的SSH SHELL模式，使用客户端登录主机。使用vi 命令编辑 ...