Let's now try to find the parents by querying against the child docs, which is the reverse of what we did in the previous section. Take a look at this query:
curl -XPOST localhost:9200/posts/rating/_search?pretty=true -d '{
"query": {
"filtered": {
"query": {"match_all": {}},
"filter": {
"and": [
{"term": {"accepted": yes}},
{
"has_parent": {
"type": "post",
"query": {
"term": {"question": " Queries vs. Filters "}
}
}
}
]
}
}
},
"sort": [
{ "rating" : {"order" : "desc"} }
]
}'Here, we get all the ratings whose question contains the term Queries vs. Filters in a descending order.