mirror of https://gitee.com/bigwinds/arangodb
19 lines
1.0 KiB
Plaintext
19 lines
1.0 KiB
Plaintext
Modification Queries
|
|
====================
|
|
|
|
ArangoDB also allows removing, replacing, and updating documents based
|
|
on an example document. Every document in the collection will be
|
|
compared against the specified example document and be deleted/replaced/
|
|
updated if all attributes match.
|
|
|
|
These method should be used with caution as they are intended to remove or
|
|
modify lots of documents in a collection.
|
|
|
|
All methods can optionally be restricted to a specific number of operations.
|
|
However, if a limit is specific but is less than the number of matches, it
|
|
will be undefined which of the matching documents will get removed/modified.
|
|
[Remove by Example](../../../DataModeling/Documents/DocumentMethods.md#remove-by-example),
|
|
[Replace by Example](../../../DataModeling/Documents/DocumentMethods.md#replace-by-example) and
|
|
[Update by Example](../../../DataModeling/Documents/DocumentMethods.md#update-by-example)
|
|
are described with examples in the subchapter
|
|
[Collection Methods](../../../DataModeling/Documents/DocumentMethods.md). |