mirror of
https://github.com/elastic/elasticsearch.git
synced 2025-06-29 01:44:36 -04:00
f26691f987
Mark the following features as experimental in the docs: * `AUTO_BUCKET()` * `SHOW FUNCTIONS` * unsigned_long type
57 lines
1.4 KiB
Text
57 lines
1.4 KiB
Text
[discrete]
|
|
[[esql-to_unsigned_long]]
|
|
=== `TO_UNSIGNED_LONG`
|
|
|
|
experimental::[]
|
|
|
|
*Aliases*
|
|
|
|
`TO_ULONG`, `TO_UL`
|
|
|
|
*Syntax*
|
|
|
|
[source,esql]
|
|
----
|
|
TO_UNSIGNED_LONG(v)
|
|
----
|
|
|
|
*Parameters*
|
|
|
|
`v`::
|
|
Input value. The input can be a single- or multi-valued column or an expression.
|
|
|
|
*Description*
|
|
|
|
Converts an input value to an unsigned long value.
|
|
|
|
*Supported types*
|
|
|
|
The input type must be of a boolean, date, string or numeric type.
|
|
|
|
If the input parameter is of a date type, its value will be interpreted as
|
|
milliseconds since the {wikipedia}/Unix_time[Unix epoch], converted to unsigned
|
|
long.
|
|
|
|
Boolean *true* will be converted to unsigned long *1*, *false* to *0*.
|
|
|
|
*Example*
|
|
|
|
[source.merge.styled,esql]
|
|
----
|
|
include::{esql-specs}/ints.csv-spec[tag=to_unsigned_long-str]
|
|
----
|
|
[%header.monospaced.styled,format=dsv,separator=|]
|
|
|===
|
|
include::{esql-specs}/ints.csv-spec[tag=to_unsigned_long-str-result]
|
|
|===
|
|
|
|
Note that in this example, the last conversion of the string isn't
|
|
possible. When this happens, the result is a *null* value. In this case a
|
|
_Warning_ header is added to the response. The header will provide information
|
|
on the source of the failure:
|
|
|
|
`"Line 1:133: evaluation of [TO_UL(str3)] failed, treating result as null. Only first 20 failures recorded."`
|
|
|
|
A following header will contain the failure reason and the offending value:
|
|
|
|
`"java.lang.NumberFormatException: Character f is neither a decimal digit number, decimal point, nor \"e\" notation exponential mark."`
|