Unsigned long field type
editUnsigned long field type
editUnsigned long is a numeric field type that represents an unsigned 64-bit
integer with a minimum value of 0 and a maximum value of 264-1
(from 0 to 18446744073709551615 inclusive).
PUT my_index { "mappings": { "properties": { "my_counter": { "type": "unsigned_long" } } } }
Unsigned long can be indexed in a numeric or string form, representing integer values in the range [0, 18446744073709551615]. They can’t have a decimal part.
POST /my_index/_bulk?refresh {"index":{"_id":1}} {"my_counter": 0} {"index":{"_id":2}} {"my_counter": 9223372036854775808} {"index":{"_id":3}} {"my_counter": 18446744073709551614} {"index":{"_id":4}} {"my_counter": 18446744073709551615}
Term queries accept any numbers in a numeric or string form.
GET /my_index/_search { "query": { "term" : { "my_counter" : 18446744073709551615 } } }
Range query terms can contain values with decimal parts.
In this case Elasticsearch converts them to integer values:
gte
and gt
terms are converted to the nearest integer up inclusive,
and lt
and lte
ranges are converted to the nearest integer down inclusive.
It is recommended to pass ranges as strings to ensure they are parsed without any loss of precision.
GET /my_index/_search { "query": { "range" : { "my_counter" : { "gte" : "9223372036854775808.5", "lte" : "18446744073709551615" } } } }
For queries with sort on an unsigned_long
field,
for a particular document Elasticsearch returns a sort value of the type long
if the value of this document is within the range of long values,
or of the type BigInteger
if the value exceeds this range.
REST clients need to be able to handle big integer values in JSON to support this field type correctly.
GET /my_index/_search { "query": { "match_all" : {} }, "sort" : {"my_counter" : "desc"} }
Unsigned long in scripts
editCurrently unsigned_long is not supported in scripts.
Stored fields
editA stored field of unsigned_long
is stored and returned as String
.
Aggregations
editFor terms
aggregations, similarly to sort values, Long
or
BigInteger
values are used. For other aggregations,
values are converted to the double
type.
Queries with mixed numeric types
editSearches with mixed numeric types one of which is unsigned_long
are
supported, except queries with sort. Thus, a sort query across two indexes
where the same field name has an unsigned_long
type in one index,
and long
type in another, doesn’t produce correct results and must
be avoided. If there is a need for such kind of sorting, script based sorting
can be used instead.
Aggregations across several numeric types one of which is unsigned_long
are
supported. In this case, values are converted to the double
type.