I'd like to know if it's possible to have multiple has_children clauses in one query. I've not been able to get it to work. Here's an example of what I'm trying:
GET test-index/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"field1": "value1"
}
},
{
"has_child": {
"type": "joinDocValue",
"query": {
"match": {
"field2": "value2"
}
}
}
},
{
"has_child": {
"type": "joinDocValue2",
"query": {
"match": {
"field3": "value3"
}
}
}
}
]
}
}
}
I saw this earlier topic: Has_child query with multiple type? where @jimczi mentioned you can have only one query per child type. It's not clear to me what exactly that means though.
The has_child documentation indicates that multiple has_children clauses in one query should be possible (although slow compared to not using parent child mappings). Specifically the documentation mentions:
Each has_child query that gets added to a search request can increase query time significantly
So obviously putting multiple has_child conditions together will significantly slow down the query... but it definitely sounds possible. I'd very much like to benchmark a few different mappings use cases which essentially require multi-has_child conditions in one query. Can anyone help form the multi-has_child query that the documentation indicates is possible?
Thank you!