I wrote about OLPC back in 2010 (and before that, somewhere back on a post I didnt port over here from SSC). It was a vision worth pursuing. It failed though, for many reasons, perhaps not the least of the killer branding around the “$100 laptop” which turned out to be unachievable. Here’s a good […]
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Another bit of miscellany, this one shows how you can use zero width characters to tag/fingerprint data. Reminds me of the Canary Trap (if you’re a Clancy fan).
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Not even close to being about SQL, I ran across the plans for a paper model of the Hubble Telescope while doing some follow up reading on the Hale Telescope (because I just read a book about it). I haven’t attempted the model, but wanted to note it here in case I want to come back […]
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Earlier this year Brent Ozar invited me to attend some of his online classes for free. Free is good! Training is good! I signed up with a few thoughts in mind: I had not taken a class recently (I like to self learn, perhaps to a fault) I was curious to see how Brent did […]
Read more "Getting Schooled by Brent"
A few months back I ran across this article for checking semantic equivalencies of queries. That’s interesting, from the perspective of someone that has once or twice rewritten a query to be faster and then discovered it was subtly different. I don’t think we have the equivalent. We can compare query plans hashes, but often […]
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