[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]
|===