What is the difference between adding a query filter inside a must and having a query filter and a must separately?
I need to apply a filter query to a search for but either of these two queries works the same for me. I would like to know if there are any differences.
Case 1:
"query": {
"bool": {
"must": [
{
"term": {
"field": {
"value": "VALUE"
}
}
},
{
"bool": {
"filter": [
{
"script": {
"script": {
"source": """
return true;
"""
}
}
}
]
}
}
]
}
}
Case 2:
"query": {
"bool": {
"must": [
{
"term": {
"field": {
"value": "VALUE"
}
}
}
],
"filter": [
{
"script": {
"script": {
"source": """
return true;
"""
}
}
}
]
}
}
In my opinion they do not differ, but I need references. Greetings.
Both the query will work exactly the same
Refer to documentation on the boolean query to know more about your structure
must: The clause (query) must appear in matching documents and will contribute to the score.
filter: The clause (query) must appear in matching documents. However unlike must the score of the query will be ignored. Filter clauses are executed in filter context, meaning that scoring is ignored and clauses are considered for caching.
Structure of your first query where multiple bool queries are combined:
{
"query": {
"bool": {
"must": [
{
"term": {},
"bool": {
"filter": {
"script": {}
}
}
}
]
}
}
}
Structure of your second query that includes single bool query:
{
"query": {
"bool": {
"must": [
{
"term": {}
}
],
"filter": [
{
"script": {}
}
]
}
}
}
As you can see, in both the search queries the document will match only when both the term query and script query condition is satisfied