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* 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>
25 lines
725 B
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25 lines
725 B
Text
[discrete]
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[[esql-to_boolean]]
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=== `TO_BOOLEAN`
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Converts an input value to a boolean value.
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The input can be a single- or multi-valued field or an expression. The input
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type must be of a string or numeric type.
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A string value of *"true"* will be case-insensitive converted to the Boolean
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*true*. For anything else, including the empty string, the function will
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return *false*. For example:
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[source.merge.styled,esql]
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----
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include::{esql-specs}/boolean.csv-spec[tag=to_boolean]
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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}/boolean.csv-spec[tag=to_boolean-result]
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|===
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The numerical value of *0* will be converted to *false*, anything else will be
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converted to *true*.
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Alias: TO_BOOL
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