The copy_to
parameter allows you to copy the values of multiple
fields into a group field, which can then be queried as a single
field. For instance, the first_name
and last_name
fields can be copied to
the full_name
field as follows:
PUT my_index { "mappings": { "properties": { "first_name": { "type": "text", "copy_to": "full_name" }, "last_name": { "type": "text", "copy_to": "full_name" }, "full_name": { "type": "text" } } } } PUT my_index/_doc/1 { "first_name": "John", "last_name": "Smith" } GET my_index/_search { "query": { "match": { "full_name": { "query": "John Smith", "operator": "and" } } } }
The values of the | |
The |
Some important points:
_source
field will not be modified to show the copied values.
"copy_to": [ "field_1", "field_2" ]
copy_to
on
field_1
to field_2
and copy_to
on field_2
to field_3
expecting
indexing into field_1
will eventuate in field_3
, instead use copy_to
directly to multiple fields from the originating field.