DENSE_RANK again gives you the ranking within your ordered partition, but the ranks are consecutive. No ranks are skipped if there are ranks with multiple items ... ... <看更多>
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DENSE_RANK again gives you the ranking within your ordered partition, but the ranks are consecutive. No ranks are skipped if there are ranks with multiple items ... ... <看更多>
... <看更多>
Just use COUNT(DISTINCT instead of COUNT( - because that's essentially the difference between DENSE_RANK and RANK . ... <看更多>