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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>
30 lines
761 B
Text
30 lines
761 B
Text
[discrete]
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[[esql-eval]]
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=== `EVAL`
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`EVAL` enables you to append new columns:
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=eval]
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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=eval-result]
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|===
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If the specified column already exists, the existing column will be dropped, and
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the new column will be appended to the table:
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[source.merge.styled,esql]
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----
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include::{esql-specs}/docs.csv-spec[tag=evalReplace]
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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=evalReplace-result]
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|===
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[discrete]
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==== Functions
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`EVAL` supports various functions for calculating values. Refer to
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<<esql-functions,Functions>> for more information.
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