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0:58
YouTube
ProCode
Why does WHERE email = NULL return zero rows?
Why does WHERE email = NULL return zero rows — even when half your users actually have a NULL email? NULL doesn't mean empty string. NULL means unknown. In SQL's three-valued logic, NULL = NULL is itself UNKNOWN, and the WHERE clause treats UNKNOWN like FALSE. Every row's filter check fails — even the rows where email really was NULL. The ...
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PYTHON EXPLAINED FOR CYBER SECURITY BEGINNERS PART 1 A for loop iterates through numbers. A port scanner iterates through doors. Same concept but totally different consequences. #python #cybersecurity #learnpython #hacking #programming
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900 snakes escaped from a snake farm in Hengzhou, China after heavy rainfall and floods caused the farm to collapse. Local media reports indicated that the floods were a result of the annual flooding season exacerbated by Typhoon Maysak. According to Chinese outlet, The Paper, some stranded villagers were bitten by escaped snakes but could not seek treatment immediately as roads were cut off. The South China Morning Post (SCMP) reported that most of the escaped snakes were non-venomous, though s
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Another day of moving some giant snakes😅 These two females actually came from the same clutch but one has grown a lot more in the same time period🤯 Reticulated pythons grow the fastest during the first two years of life but don’t ever stop growing😳 Their growth rate does significantly slow down over time and they reach their full length at about 4 to 5 years🙌
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The Duffy-null phenotype is a genetic variant tied to ancestry, not race, most commonly found in people with West African ancestry. In the United States, about two-thirds of people who self-identify as Black carry this variant. Individuals with the Duffy-null phenotype naturally have lower neutrophil (white blood cell) levels without an increased risk of infection. But because neutrophil reference ranges were historically based on people of European descent, failing to account for this variant h
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