Delete Documents

Question 1

Delete a single document

Answer 1

DELETE /my_index/_doc/1
This deletes the document with the ID 1 from the my_index index.

Question 2

Delete by Query

Answer 2

POST /my_index/_delete_by_query
{
“query”: {
“term”: {
“status”: “archived”
}
}
}

In this example, all documents in the my_index index where the status field is “archived” will be deleted.

Question 3

Delete All Documents from an Index

Answer 3

POST /my_index/_delete_by_query
{
“query”: {
“match_all”: {}
}
}

Question 4

Delete Documents from Multiple Indices

Answer 4

POST /index1,index2/_delete_by_query
{
“query”: {
“term”: {
“category”: “obsolete”
}
}
}

Question 5

Query Params

Answer 5

POST /my_index/_delete_by_query?conflicts=proceed

POST /my_index/_delete_by_query?refresh=true

conflicts: Set to “proceed” to continue deleting even if there are version conflicts.
refresh: Set to true to force a refresh after the delete operation

Question 6

batch_size parameter

Answer 6

POST /my_index/_delete_by_query
{
“query”: {
“term”: {
“status”: “archived”
}
},
“size”: 1000
}

Use the size parameter to control the batch size of each scroll request.