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HackerRank_Solutions
SQL
Basic Select

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weather-observation-station-4.sql

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2 lines (2 loc) · 57 Bytes

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HackerRank_Solutions
SQL
Basic Select

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weather-observation-station-4.sql

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2 lines (2 loc) · 57 Bytes

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2

SELECT (COUNT(CITY) - COUNT(DISTINCT CITY))

FROM STATION;

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