27. Score Quartiles with NTILE
MediumRankingNTILEbucketing
NTILE(n) splits ordered rows into n roughly equal buckets —
handy for quartiles, deciles, and percentiles.
Task: divide students into 4 quartiles by score (lowest scores in quartile
1). Return name, score, and quartile, ordered by score, then name.
Tables
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Expected outputrows must come back in this order
Computing expected output…
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