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Is there any difference between GROUP BY and DISTINCT
....
Here are the most important operations:
FROM (including JOIN, APPLY, etc.)
WHERE
GROUP BY (can remove duplicates)
Aggregations
HAVING
Window functions
SELECT
DISTINCT (can remove duplicates)
UNION, INTERSECT, EXCEPT (can remove duplicates)
ORDER BY
OFFSET
LIMIT
As you can see, the logical or...
How to convert a Title to a URL slug in jQuery?
...); // trim
str = str.toLowerCase();
// remove accents, swap ñ for n, etc
var from = "ãàáäâẽèéëêìíïîõòóöôùúüûñç·/_,:;";
var to = "aaaaaeeeeeiiiiooooouuuunc------";
for (var i=0, l=from.length ; i<l ; i++) {
str = str.replace(new RegExp(from.charAt(i), '...
Unfortunately MyApp has stopped. How can I solve this?
...There should be information on why it failed, the line number, Class name, etc.
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Is there a code obfuscator for PHP? [closed]
...ers have written here about not using obfuscation because it can be broken etc:
I have only one thing to answer them - don't lock your house door because anyone can pick your lock.
This is exactly the case, obfuscation is not meant to prevent 100% code theft. It only needs to make it a time-consumin...
How can we match a^n b^n with Java regex?
...ue in learning about assertions, nested references, possessive quantifier, etc, perhaps the bigger lesson here is the creative process by which one can try to solve problems, the determination and hard work that it often requires when you're subjected to various constraints, the systematic compositi...
Retrieve version from maven pom.xml in code
...tion, or even arbitrary properties you put in your pom <properties>, etc. Resource filtering, combined with Maven profiles, can give you variable build behavior at build time. When you specify a profile at runtime with -PmyProfile, that can enable properties that then can show up in your bui...
How to generate UML diagrams (especially sequence diagrams) from Java code?
... choice it's very advanced and full of features, but if you just want to sketch out some UML diagrams and easy installation then ObjectAid is pretty cool and it doesn't require any plugins I just installed it over Eclipse-Java EE and works great !.
UPDATE Oct 11th, 2013
My original post was in...
How do you reverse a string in place in JavaScript?
...urn statement, without using built-in functions ( .reverse() , .charAt() etc.)?
51 Answers
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Validate decimal numbers in JavaScript - IsNumeric()
...g containing a numeric value (I had to consider also exponential notation, etc.), a Number object, virtually anything could be passed to that function, I couldn't make any type assumptions, taking care of type coercion (eg. +true == 1; but true shouldn't be considered as "numeric").
I think is wor...
Stop Excel from automatically converting certain text values to dates
...P, Unicode U+200B)
is not a big hindrance when viewing the CSV in Notepad (etc),
and could be removed by find/replace in Excel (or Notepad etc).
You don't need to import the CSV, but can simply double-click to open the CSV in Excel.
If there's a reason you don't want to use the tab, look in an Uni...