skysight-inc/HackerNews huggingface dataset:
There's a reason these guys don't call themselves a
"social utility" anymore... But anyway, that's a whole
'nother subject

I am reposting my comment on Google+ as it seems relevant to the point raised here:

"""Social networking has two vital utilities. First, it connects people of different geographical locations but of similar interests. The graph of people connected by shared interests is called the interest graph.

Secondly, it enriches existing real life relationships. This is best described within the pre-Facebook era, the era of blogging. At that point, whenever I read a friend's blog, I was always amazed by how much I don't know about him or her. A blog captures something very different about a person, something one can't comprehend even through face to face conversation. In this sense, online social networking is complementing real life social interaction.

In my vision, social networks of the future will continue to push to the limit on each of these fronts. The interest graph is apparently nowhere near complete, and there are opportunities to look for in what is missing through face to face communication, and how software can help with that.

But what Facebook has been doing is much more pervasive than that. They are partly replacing real life interaction. There are less questions to ask of a person as Facebook already shows you whether she has a boyfriend and which bar she went to last night. They are exploiting the narcissism in each and every of us. Every other social network solves a problem and then stays out of our ways. Facebook is trying to become the social life itself."""
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'id' doesn't appear in the group by list and it isn't being used in an aggregate function.

I'm actually curious: what id would a MySQL user expect to be displayed for this query?
Thanks. It's true, he's the one that sucks.
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I sometimes wish I had gone to medical school - now is an amazing time to be in healthcare. Technology has the potential to have a huge impact.

Here's the problem: most intelligent driven people are not going to be satisfied with "having a regular job, enjoying life, etc" Sorry, it's just not built into us. Sure, we want those things, but we also want that sense of achievement or of making a valuable contribution to something bigger than our immediate concerns (e.g. a big impact startup, saving the world, or cure someone's illness). The key to health is not losing sight of the "regular things" in life while still pursuing our ambitions.

In medicine it's sometimes hard to see the positive impact you're having. Or maybe you don't think you are having a positive impact. If that's the case then figure out what the problem is and hack it.

One thing that won't fly is pining away for a "regular life" - If you were really going to be satisfied with that you would have taken that route a long time ago.

Believe me, there are people with regular lives who are wishing they went to medical school....
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http://en.wikipedia.org/wiki/Infantry
Ponder: Which id is returned when you have more then one last name that is the same?
A ton of technical masturbation, and not much curriculum.

Anyone making profits in this space knows that curriculum is where the money is. I'll be rude and say that none of the advisors have ever made a dime in education, and it shows. A lot of passion and money, but little experience.

My advice for next year would be for the advisors to pay many teachers to be create content for the startups. Office hours with teachers and founders would have caused many of these startups to pivot earlier, and actually build something that teachers want in the classroom.
Are you looking for a paid job? or you want to join another startup as a partner? or are you looking to invest?

For paid jobs and joining other start ups twitter is actually pretty handy. Follow some companies, people you like and they are always tweeting/retweeting opportunities. Make sure to also follow incubators they are always retweeting about jobs for their companies.
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Well, lets say your rows are:

id|score|last_name
1|11|smith
2|22|jones
3|33|smith
4|44|jones

Query we are pretending is valid is:
SELECT id, last_name FROM table GROUP BY last_name;

What rows are returned? I expect to see something like:

?|?|smith
?|?|jones

However, what ? is isn't clear. Could we get a row like 1|33|smith ?

In SQL, all selected columns must be part of the group by or inside an aggregate.
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arn, thanks for sharing, truly. I'm a general medical officer in the Navy (Navy still puts docs to work after internship, applying for residency later. The work is mainly fast-track or urgent care style triaging and treating).

I'm currently facing the choice of extending my current tour a year then going back to residency or taking a another two-year tour with the Marines and going to Afghanistan. I'm married with kids in California, so I could conceivably do either without moving the kids. Clearly, we have different paths, but why did you opt for the web over practicing? Along those lines, what was your fellowship? Where are you now? (Read: if you are in SoCal, I will take you to dinner of your choice in exchange for the conversation).
Because Starbucks doesn't sell Mountain Dew or Red Bull?
However, Facebook did show random old status updates on right hand side next to other content by them.
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I feel the lack of index-only queries.

As for lightweight connections, I see this as completely moot. While you might make tens of thousands of cheap connections to a mysql server, postgresql is much better at executing concurrent queries. Connection poolers like pgbouncer let you make as many cheap connections as you want if most of them are going to be idle anyway.
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It almost certainly is cultural. I'm in a graduate level SE program, and it is mostly made up of South Asian international students, perhaps 60% of whom are females.
I think it's implied after 8 years of experience.. Still seems a little sketch, but I think it would be on par in say the Bay Area (though the programmer would have no debt)
I up voted you, because I agree with some of your points. But I don't agree with the rest of it.

There are those, especially who visit this site, who are smart, have a lot of motivation, and want to do something great. Enterpreneurship is a hard life as well. Running a startup will suck much your life as much as residency or medical school might.

As you say though the key to health is not losing sight of the "regular things". The problem with medical school and residency is that you have little control over that. You will lose sight of the regular things. You won't be enjoying your life. And here's the big catch... you won't be changing the world, either. Being a doctor is not glamorous, if you think it is, re-read the rant because he touches on much of it.

And, very few people have an actual "passion" for medicine. I don't think I've met one person. Someone who would be doing medicine even if they didn't have to. Maybe your startup won't change the world either, but at least you might have a personal passion for it or the process.

My point is that for those with regular lives who wish they went to medical school... What's the reason? Read the rant. It's the wrong reason. (he even spells out that there is only one good reason to go into medicine)
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You mean like a Bank CD? What you've described isn't that crazy.
The Linux development/QA cycle is fairly interesting.

Greg Kroah-Hartman has given a few talks on this, and from the dev perspective a lot of it boils down to "make small, discrete changes, compile, and just f*cking ship it". Testing happens among users.

But, because this is free software, there are a substantial number of systematic testers among the users, whether this is commercial distros (Red Hat, Suse, Ubuntu), noncommercial ones (Debian), organizations with a substantial interest in the quality of Linux code (IBM, Intel, AMD, from which we've got some pretty extensive test suites), proprietary software developers (who hate it when a kernel change breaks their code), independent researchers (I know there's a lot of software quality research based on Linux), and even some performance bashing by Linux haters ... which results in better Linux code.

And there are a lot of users who end up discovering bugs as well.

But the coverage is pretty good. Even if it's not explicitly rolled into the dev process itself.

Similar situations apply to other projects, though Linux for its size, scope, and user base tends to do better than many.
Note: This article has been translated from Swedish. It says 75000 dollars in the translated version, but the source clearly says it is 75000 Swedish krona, i.e. roughly $10k
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One of the things that puts me off the Mysql community are all the people shouting "Mysql is good enough".

I've had to professionally administer both mysql and postgresql installations. Mysql is an awful piece of software. Every second spent using it is painful.

You say 'it just works', and in that case it really doesn't matter what you use. If you haven't run into bugs/quirks/problems with whatever datastore you use, whether sql, or nosql, whether open or closed source, you haven't pushed it very hard. All software has rough edges and bugs.

I think you will have a very hard time finding people who have used both mysql and some other database, whether sql-server, postgresql, or oracle (or even firebird) that would have a very high opinion of it.

Now, what are the 'actual needs' of the vast majority of MySQL users that Postgresql doesn't satisfy? I hope that requirement isn't 'open source' :)
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No, not at all the average doctor's salary is more than twice the average programmers salary.
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Ask a real engineer.

And by "real engineer", I mean one whose "engineer" is preceded by one of: agricultural, chemical, civil, electrical, environmental, industrial, mechanical, nuclear, or petroleum, and who is in possession of a state-issued license.
"One could say the same for any given field"

Nah, it varies a lot. The nature of the work itself is different among various jobs and economic forces also create inequalities in working conditions in various industries.

I've been a programmer and a teacher. I've found being a programmer to be easy, and being a teacher to be difficult (but not as difficult as what was described in this blog post).
This has been passed around MIT circles for a while and is as profound and relevant for me as ever.
And here's a Microsoft-adapted version of the same document: http://www.bouldertherapist.com/html/humor/MentalHealthHumor...

I wonder which one came first.
His username lent itself to searching, so I doubt he'll mind me posting: http://www.daemonology.net/papers/
Fellowship in nephrology. Now in Virginia. Financially, it became an easy decision. I was making enough that I didn't have to keep working in medicine. Beyond that, I had my first child around that time, and didn't want to lose that time.

Feel free to email me if you have any further questions (email in profile).
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http://xkcd.com/812/ - relevant xkcd.
It can. Try to quote the term:

"--enable-thread"

(with quotes)

will yield results.
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And what stops you from using SQL standard syntax?
You can disable MySQL extensions for that if you wish so.
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> I'm actually curious: what id would a MySQL user expect to be displayed
> for this query?

MySQL discourages using this feature if columns not included in GROUP BY are not constant in the group:

> Do not use this feature if the columns you omit from the GROUP BY part
> are not constant in the group. The server is free to return any value
> from the group, so the results are indeterminate unless all values are
> the same.

Their example in documentation:

SELECT order.custid, customer.name, MAX(payments)
FROM order,customer
WHERE order.custid = customer.custid
GROUP BY order.custid;
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I have noticed that quite often. Ask HN posts seem to clump together. Does anyone know if this is:

a. pure coincidence
b. how HN ranks posts
c. Some statistical correlation that exists between ask HN posts, that binds them more tightly than other posts. I would think it has to do with ask HN posts' objective: to be answered.
d. total fluke just my experience
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"Nothing in this world can take the place of Persistence.
Talent will not; nothing is more common than unsuccessful men with talent.
Genius will not; unrewarded genius is almost a proverb.
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Persistence and determination alone are omnipotent.

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It's a bit like Hushmail. Compare their new advice to customers about how Hushmail will comply with law enforcement; to the point of creating new malicious Java software and pushing that out secretly to the 'target' / 'victim' to compromise their communication.

Hushmail states all this clearly, allowing new customers to make an informed choice.
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Actually that's one of the things I like about HN. So easy for a community site to degenerate into a handful of long-running in-jokes, applied to the topic of the day.
The point of the article is that basic functionality you need to get MySQL to scale well are no longer available as 'open source', but only in the enterprise product. That seems to touch on 'open source' postgres scaling, as well as mysql being slow (well, unless you pay for enterprise it seems).
The article lists $45,000 per year for doctors. Programmer polls on HN showed that $100,000 is little.

What am I missing? :-)
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MAC addresses are easily changed. You don't have to be in a store, or even near it, to use its wifi. And you don't have to bring your cell. Or you could use a throwaway prepaid.

Long story short, no competent hacker would get caught using hidemyass, and the Feds are once again putting on a dog and pony show.
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Meh, I left my post running tech there just before this story ran. One day I'll write what really happened. It's a lot more complex than people imagine.
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HN readers are not average programmers and are not likely to be junior.

Or people lie.
I have also seen this a number of times before, but it is worth re-posting since a lot of people miss stories and the audience here has grown.

If in doubt, submit, the upvotes will judge
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I'd love to read that.
a) Clustered and covering indexes.

b) Non-transactional tables

Both allow you optimize the memory usage of some particularly problematic cases, specifically very large, simple tables. Postgres cannot return data directly from indexes (covering indexes). It always has to go back to the table itself to fetch the actual data. If the table is large, that can be inefficient for some types of queries.

Non-transactional tables use a lot less memory as well. For instance, if you have a large table that represents a N:M relationship (id1 int, id2 int), the two ints use 8 bytes of memory. A postgres table adds about 24 bytes per record, three times the actual data, plus some overhead per page.

Don't take this to mean that MySQL is faster than Postgres. That's not generally the case. The Postgres query optimizer is vastly better than MySQL's. So for complex queries and data models, Postgres is way superior. The big differences are always related to very specific data model and query combinations, so general benchmarks are utterly useless.
is there any particular one, you would recommend?
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I understand that $45k is about average for residents. Fellows make a bit more, and so on.

Then, if you think of work as the process of converting time/life into money, I'd say private practice is a bit more efficient than hospital work. Because you work for yourself, you get to extract as much life as you want in exchange for money. I suppose it is very similar for entrepreneurs.
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It seems to me like most CS research projects wouldn't necessarily have much code behind them. Obviously, data structures and algorithms could, but implementations are generally trivial once you've got the academic paper.
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$45/year for residents. At that point you're still basically an apprentice doctor.
"Closures are far more confusing."

IMO (obviously this is subjective) this is not true but it depends upon whether you mean confusing to use or confusing to understand the full implications of a thing under the hood.

Closures are pretty easy to start using for just about any halfway decent programmer if you lay off the theoretical underpinnings and just show them: here do this, and this will happen. Actually understanding how they function is another matter, but to just start using them is fairly simple assuming the language you are using supports them natively.

Pointers on the other hand are a fairly simple concept and unlike closures there is really no depth to the concept, but because most people's brains don't deal well with indirection beyond one level, pointers are very "tricky" when it comes to training your brain on how to use them correctly even after you understand the concept.

Closures are easy to use, hard to grok; pointers are easy to grok, hard to use, so which is more confusing depends a lot on what you mean by confusing.
I wouldn't do that. It would pin the attacker down from 'anywhere in the world' to 'he lives somewhere near this Starbucks'.
Hopefully Michael Hartl is still alive
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Oh, I love C. So simple and so powerful. God help me, I barely write anything in C anymore, but it will always hold a dear place in my heart until the day I die.

Thank you for allowing me this nostalgic indulgence, hackernewers. I know for at least a few of you, it will resonate.
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Pretty amusing, in a weird sort of way (perhaps just a sign of some stupid tech-snobbery on my part) to see a very recent message indicating that a large, pretty high-profile and deeply entrenched and respected software project is using CVS.

I'm so used to the constant bombardment about Git (and other DVCS:es) here, that even projects using Subversion seem to be a bit "left behind", and here's all of OpenBSD doing their thing with CVS.

I guess it proves that the tools aren't everything.
First paper was pi-related.

The bsdiff stuff looks interesting (to me) though.
Good news! The Postgresql community is currently emulating the Linux community of the late 90s. That means in another 5-10 years, you too will have matured to the point where you don't have to go around screaming your perceived superiority and can allow your product to speak for itself.

Seriously, even overpriced, self-aggrandizing Oracle DBAs are less insufferable than you guys.
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