elasticsearch/docs/reference/esql/functions/coalesce.asciidoc

[discrete]
[[esql-coalesce]]
=== `COALESCE`

Returns the first non-null value.

[source.merge.styled,esql]
----
include::{esql-specs}/null.csv-spec[tag=coalesce]
----
[%header.monospaced.styled,format=dsv,separator=|]
|===
include::{esql-specs}/null.csv-spec[tag=coalesce-result]
|===
Restructure ES\|QL docs (#100806) * 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> 2023-10-17 23:36:14 +08:00			`[discrete]`
ESQL: COALESCE function (#98542) This adds a `COALESCE` function that returns the first non-null value. 2023-08-18 01:51:44 +08:00			`[[esql-coalesce]]`
			=== `COALESCE`

			`Returns the first non-null value.`

			`[source.merge.styled,esql]`
			`----`
			`include::{esql-specs}/null.csv-spec[tag=coalesce]`
			`----`
			`[%header.monospaced.styled,format=dsv,separator=\|]`
			`\|===`
			`include::{esql-specs}/null.csv-spec[tag=coalesce-result]`
			`\|===`