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6 lines
224 B
MySQL
6 lines
224 B
MySQL
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SELECT round((countIf(rating = 5)) - (countIf(rating < 5)), 4) as nps,
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dense_rank() OVER (ORDER BY nps DESC) as rank
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FROM (select number as rating, number%3 rest_id from numbers(10))
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group by rest_id
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order by rank;
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