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This adds docs for all of ESQL's aggregation functions. Hopefully from here on out we can add the docs as we add new functions. I've created a few tagged regions in the aggs docs themselves so we can include them into the ESQL docs. --------- Co-authored-by: Abdon Pijpelink <abdon.pijpelink@elastic.co>
44 lines
1.1 KiB
Text
44 lines
1.1 KiB
Text
[[esql-stats-by]]
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=== `STATS ... BY`
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Use `STATS ... BY` to group rows according to a common value and calculate one
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or more aggregated values over the grouped rows.
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=stats]
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----
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[%header.monospaced.styled,format=dsv,separator=|]
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|===
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include::{esql-specs}/docs.csv-spec[tag=stats-result]
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|===
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If `BY` is omitted, the output table contains exactly one row with the
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aggregations applied over the entire dataset:
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=statsWithoutBy]
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----
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[%header.monospaced.styled,format=dsv,separator=|]
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|===
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include::{esql-specs}/docs.csv-spec[tag=statsWithoutBy-result]
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|===
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It's possible to calculate multiple values:
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[source,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=statsCalcMultipleValues]
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----
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It's also possible to group by multiple values (only supported for long and
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keyword family fields):
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[source,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=statsGroupByMultipleValues]
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----
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The following aggregation functions are supported:
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include::../aggregation-functions.asciidoc[tag=functions]
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