ElasticSearch adjacent words for nested queries - elasticsearch

Question

I'm using ES 7.14/Kibana 7.10, I have to search for adjacent words (any order), hence I'm using this query:
{
"query":{
"bool":{
"must":[
{
"query_string":{
"query":"*antonio* *banderas*",
"fields":[
"text"
],
"default_operator":"and",
}
}]
}
}
}
This works ok for a text plain field. Now, I have a nested field metadata, let's say the mapping is
{
"mappings:": {
"properties": {
"text": {
"type": "text"
},
"metadata": {
"type": "nested",
"properties": {
"text": {
"type": "text"
}
}
}
}
}
}
and I would like to search that nested field in the same way (adjacent words search), so assumed that it's is possibile to write a nested query for query_string in this way
{
"query": {
"query_string": {
"query": "metadata.text:*antonio* *banderas*"
}
}
}
How to adapt this approach to the previous one with default_operator=and etc.? If I do
{
"query": {
"query_string": {
"query": "metadata.text:*antonio* *banderas*",
"default_operator": "and"
}
}
}
I don't get any result (but any error too).
A similar question, but related to matching adjacent words for multiple nested fields is here.

Answer 1

Adjacent word with any order should not be search with query_string but wildcard or match or term or span_term
There is also a mapping type wildcard optimised for this usage, depends on what type of queries you will need.
So for you first example :
{
"query": {
"bool": {
"must": [
{
"wildcard": {
"text": "*antonio*"
}
},
{
"wildcard": {
"text": "*banderas*"
}
}
]
}
}
}
OR
{
"query": {
"bool": {
"must": [
{
"wildcard": {
"text": "*antonio*banderas*"
}
}
]
}
}
}
and for nested queries :
{
"query": {
"bool": {
"must": [
{
"nested": {
"path": "metadata",
"query": {
"bool": {
"must": [
{
"wildcard": {
"metadata.text": "*antonio*"
}
},
{
"wildcard": {
"metadata.text": "*banderas*"
}
}
]
}
}
}
}
]
}
}
}