德哥
2016-01-08
5797浏览量
width_bucket(operand dp,b1 dp, b2 dp, count int) | int | return the bucket number to which operand would be assigned in a histogram having count equal-width buckets spanning the range b1 to b2; returns 0 or count+1 for an input outside the range | width_bucket(5.35, 0.024, 10.06, 5) | 3 |
width_bucket(operandnumeric, b1 numeric, b2numeric, count int) | int | return the bucket number to which operand would be assigned in a histogram having count equal-width buckets spanning the range b1 to b2; returns 0 or count+1 for an input outside the range | width_bucket(5.35, 0.024, 10.06, 5) | 3 |
width_bucket(operandanyelement, thresholdsanyarray) | int | return the bucket number to which operand would be assigned given an array listing the lower bounds of the buckets; returns 0 for an input less than the first lower bound; the thresholds arraymust be sorted, smallest first, or unexpected results will be obtained | width_bucket(now(), array['yesterday', 'today', 'tomorrow']::timestamptz[]) | 2 |
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