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8ac4ba751e
* Break out 'Limitations' into separate page * Add REST API docs * Restructure commands, functions, and operators refs * Add placeholder for getting started guide * Group 'Syntax', 'Metafields', and 'MV fields' under 'Language' * Add placeholder for Kibana page * Add link from landing page * Apply uniform formatting to ACOS, CASE, and DATE_PARSE function refs * Reword default LIMIT * Add support for COUNT(*) * Move 'Commands' and 'Functions and operators' to individual pages --------- Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
42 lines
865 B
Text
42 lines
865 B
Text
[discrete]
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[[esql-case]]
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=== `CASE`
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*Syntax*
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[source,txt]
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----
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CASE(condition1, value1[, ..., conditionN, valueN][, default_value])
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----
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*Parameters*
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`conditionX`::
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A condition.
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`valueX`::
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The value that's returned when the corresponding condition is the first to
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evaluate to `true`.
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`default_value`::
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The default value that's is returned when no condition matches.
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*Description*
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Accepts pairs of conditions and values. The function returns the value that
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belongs to the first condition that evaluates to `true`.
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If the number of arguments is odd, the last argument is the default value which
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is returned when no condition matches.
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*Example*
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[source,esql]
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=case]
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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=case-result]
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|===
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