1.2 KiB
1.2 KiB
GREATEST
[esql-greatest]
Syntax
:::{image} ../../../../../images/greatest.svg :alt: Embedded :class: text-center :::
Parameters
first
- First of the columns to evaluate.
rest
- The rest of the columns to evaluate.
Description
Returns the maximum value from multiple columns. This is similar to MV_MAX
except it is intended to run on multiple columns at once.
::::{note}
When run on keyword
or text
fields, this returns the last string in alphabetical order. When run on boolean
columns this will return true
if any values are true
.
::::
Supported types
first | rest | result |
---|---|---|
boolean | boolean | boolean |
boolean | boolean | |
date | date | date |
date_nanos | date_nanos | date_nanos |
double | double | double |
integer | integer | integer |
integer | integer | |
ip | ip | ip |
keyword | keyword | keyword |
keyword | keyword | |
long | long | long |
long | long | |
text | text | keyword |
text | keyword | |
version | version | version |
Example
ROW a = 10, b = 20
| EVAL g = GREATEST(a, b)
a:integer | b:integer | g:integer |
---|---|---|
10 | 20 | 20 |