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This got to be the most dreadful worded question I ever seen. Considered the poor quality in writing he could more likely used the childish language he attempts to show us..
Instead of "Let N be the number of CITY entries in STATION, and let N be the number of distinct CITY names in STATION; query the value of N - N from STATION."
Write:
If I have these five items in a list: Monkey, Monkey, Lion, Tiger, Horse. How can I with SQL find out the number of unique items in the list?
Is there a feature for Us to Demand a Re-phrase of Questions in Hackerrank? Because after this.. I really hope there is one.
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Weather Observation Station 4
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This got to be the most dreadful worded question I ever seen. Considered the poor quality in writing he could more likely used the childish language he attempts to show us..
Instead of "Let N be the number of CITY entries in STATION, and let N be the number of distinct CITY names in STATION; query the value of N - N from STATION."
Write: If I have these five items in a list: Monkey, Monkey, Lion, Tiger, Horse. How can I with SQL find out the number of unique items in the list?
Is there a feature for Us to Demand a Re-phrase of Questions in Hackerrank? Because after this.. I really hope there is one.