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November 8, 2016 18:59
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Cumulative sum + serial differencing
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| POST t/type_name | |
| { | |
| "d": "2016-01-01T01:01:01", | |
| "foo": 1 | |
| } | |
| POST t/type_name | |
| { | |
| "d": "2016-01-02T01:01:01", | |
| "foo": 2 | |
| } | |
| POST t/type_name | |
| { | |
| "d": "2016-01-03T01:01:01", | |
| "foo": 3 | |
| } | |
| POST t/type_name | |
| { | |
| "d": "2016-01-04T01:01:01", | |
| "foo": 4 | |
| } | |
| POST t/type_name | |
| { | |
| "d": "2016-01-05T01:01:01", | |
| "foo": 5 | |
| } | |
| POST t/type_name | |
| { | |
| "d": "2016-01-06T01:01:01", | |
| "foo": 6 | |
| } | |
| GET t/_search | |
| { | |
| "query": { | |
| "match_all": {} | |
| }, | |
| "aggs": { | |
| "hist": { | |
| "date_histogram" : { | |
| "field" : "d", | |
| "interval" : "day" | |
| }, | |
| "aggs": { | |
| "v": { | |
| "sum": { | |
| "field": "foo" | |
| } | |
| }, | |
| "sum_foo": { | |
| "cumulative_sum": { | |
| "buckets_path": "v" | |
| } | |
| }, | |
| "diff": { | |
| "serial_diff": { | |
| "buckets_path": "sum_foo", | |
| "lag": 2 | |
| } | |
| } | |
| } | |
| } | |
| }, | |
| "size": 0 | |
| } |
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| { | |
| "took": 7, | |
| "timed_out": false, | |
| "_shards": { | |
| "total": 5, | |
| "successful": 5, | |
| "failed": 0 | |
| }, | |
| "hits": { | |
| "total": 6, | |
| "max_score": 0, | |
| "hits": [] | |
| }, | |
| "aggregations": { | |
| "hist": { | |
| "buckets": [ | |
| { | |
| "key_as_string": "2016-01-01T00:00:00.000Z", | |
| "key": 1451606400000, | |
| "doc_count": 1, | |
| "v": { | |
| "value": 1 | |
| }, | |
| "sum_foo": { | |
| "value": 1 | |
| } | |
| }, | |
| { | |
| "key_as_string": "2016-01-02T00:00:00.000Z", | |
| "key": 1451692800000, | |
| "doc_count": 1, | |
| "v": { | |
| "value": 2 | |
| }, | |
| "sum_foo": { | |
| "value": 3 | |
| } | |
| }, | |
| { | |
| "key_as_string": "2016-01-03T00:00:00.000Z", | |
| "key": 1451779200000, | |
| "doc_count": 1, | |
| "v": { | |
| "value": 3 | |
| }, | |
| "sum_foo": { | |
| "value": 6 | |
| }, | |
| "diff": { | |
| "value": 5 | |
| } | |
| }, | |
| { | |
| "key_as_string": "2016-01-04T00:00:00.000Z", | |
| "key": 1451865600000, | |
| "doc_count": 1, | |
| "v": { | |
| "value": 4 | |
| }, | |
| "sum_foo": { | |
| "value": 10 | |
| }, | |
| "diff": { | |
| "value": 7 | |
| } | |
| }, | |
| { | |
| "key_as_string": "2016-01-05T00:00:00.000Z", | |
| "key": 1451952000000, | |
| "doc_count": 1, | |
| "v": { | |
| "value": 5 | |
| }, | |
| "sum_foo": { | |
| "value": 15 | |
| }, | |
| "diff": { | |
| "value": 9 | |
| } | |
| }, | |
| { | |
| "key_as_string": "2016-01-06T00:00:00.000Z", | |
| "key": 1452038400000, | |
| "doc_count": 1, | |
| "v": { | |
| "value": 6 | |
| }, | |
| "sum_foo": { | |
| "value": 21 | |
| }, | |
| "diff": { | |
| "value": 11 | |
| } | |
| } | |
| ] | |
| } | |
| } | |
| } |
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