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Select n random rows from SQL Server table
...t rows randomly. I found the following code sample in the SQL Server Books Online article Limiting Results Sets by Using TABLESAMPLE:
If you really want a random sample of
individual rows, modify your query to
filter out rows randomly, instead of
using TABLESAMPLE. For example, the
follo...
How do I exit the Vim editor?
... help system than using vim itself, and mostly rely on quick ref cards and online documentation.
– bgvaughan
Jul 8 '15 at 6:40
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Convert camelCaseText to Sentence Case Text
...rticularly elegant or fast, but it's simple, understandable, and works.
An online runnable example is on jsfiddle, or you can view the output of the snippet below in your console:
// Take a single camel case string and convert it to a string of separate words (with spaces) at the camel-case boun...
Generate random number between two numbers in JavaScript
...r solutions:
(Math.random() * 6 | 0) + 1
~~(Math.random() * 6) + 1
Try online
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HTML5 Pre-resize images before uploading
...orithms I settled on bilinear interpolation taken from a blog which is not online anymore but accessible via the Internet Archive, which gives good results, here's the applicable code:
ImageUploader.prototype.scaleImage = function(img, completionCallback) {
var canvas = document.createElement...
How to work around the lack of transactions in MongoDB?
...re about how RDBMS systems do transactions. Can you recommend some kind of online material or book where i can read about these?
– NagyI
Jul 10 '11 at 18:28
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Hash function that produces short hashes?
... results. Choose it from the dropdown here to try it out:
http://www.sha1-online.com/
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Copy folder recursively, excluding some folders
...
Looks good indeed! This is also available in the online docs. Unfortunately cpio hasn't been packaged for MSYS2 yet.
– underscore_d
Apr 9 '18 at 12:22
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How to vertically center a container in Bootstrap?
...xbox syntax omitted in the posted snippet due to brevity, but exist in the online example.
In some of old web browsers such as Firefox 9 (in which I've tested), the flex container - .vertical-center in this case - won't take the available space inside the parent, therefore we need to specify the wid...
How does facebook, gmail send the real time notification?
...verage web-server is about 200, but the number of Facebook users which are online simultaneously is a way bigger. How do they do that?
– Paul
Apr 7 '14 at 12:04
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