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Diffstat (limited to 'docs/reference/mapping/fields/uid-field.asciidoc')
| -rw-r--r-- | docs/reference/mapping/fields/uid-field.asciidoc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/docs/reference/mapping/fields/uid-field.asciidoc b/docs/reference/mapping/fields/uid-field.asciidoc new file mode 100644 index 0000000..f9ce245 --- /dev/null +++ b/docs/reference/mapping/fields/uid-field.asciidoc @@ -0,0 +1,11 @@ +[[mapping-uid-field]] +=== `_uid` + +Each document indexed is associated with an id and a type, the internal +`_uid` field is the unique identifier of a document within an index and +is composed of the type and the id (meaning that different types can +have the same id and still maintain uniqueness). + +The `_uid` field is automatically used when `_type` is not indexed to +perform type based filtering, and does not require the `_id` to be +indexed. |