25 lines
686 B
Plaintext
25 lines
686 B
Plaintext
[[esql-mv_max]]
|
|
=== `MV_MAX`
|
|
Converts a multivalued field into a single valued field containing the maximum value. For example:
|
|
|
|
[source.merge.styled,esql]
|
|
----
|
|
include::{esql-specs}/math.csv-spec[tag=mv_max]
|
|
----
|
|
[%header.monospaced.styled,format=dsv,separator=|]
|
|
|===
|
|
include::{esql-specs}/math.csv-spec[tag=mv_max-result]
|
|
|===
|
|
|
|
It can be used by any field type, including `keyword` fields. In that case picks the
|
|
last string, comparing their utf-8 representation byte by byte:
|
|
|
|
[source.merge.styled,esql]
|
|
----
|
|
include::{esql-specs}/string.csv-spec[tag=mv_max]
|
|
----
|
|
[%header.monospaced.styled,format=dsv,separator=|]
|
|
|===
|
|
include::{esql-specs}/string.csv-spec[tag=mv_max-result]
|
|
|===
|