Suppose that my index have two documents:
- "get my money"
- "my money get here"
When I do a regular match query for "get my money", both documents match correctly but they get equal scores. However, I want the order of words to be significant during scoring. In other words, I want "get my money" to have a higher score.
So I tried putting my match query inside the must clause of a bool query and included a match_phrase (with the same query string). This seems to score hits correctly until I do a search with "how do I get my money". In that case, match_phrase query doesn't seem to match, and the hits are returned with equal scores again.
How can I construct my index/query so that it takes word order into account but does not require all searched words to exist in document?
Index mapping with test data
PUT test-index
{
"mappings": {
"properties" : {
"keyword" : {
"type" : "text",
"similarity": "boolean"
}
}
}
}
POST test-index/_doc/
{
"keyword" : "get my money"
}
POST test-index/_doc/
{
"keyword" : "my money get here"
}
Query "How do I get my money" - Doesn't work as needed
GET /test-index/_search
{
"query": {
"bool": {
"must": [
{
"match": {
"keyword": "how do i get my money"
}
}
],
"should": [
{
"match_phrase": {
"keyword": {
"query": "how do i get my money"
}
}
}
]
}
}
}
Results (Both documents scored same)
{
"took" : 2,
"timed_out" : false,
"_shards" : {
"total" : 1,
"successful" : 1,
"skipped" : 0,
"failed" : 0
},
"hits" : {
"total" : {
"value" : 2,
"relation" : "eq"
},
"max_score" : 3.0,
"hits" : [
{
"_index" : "test-index",
"_type" : "_doc",
"_id" : "6Xy8wXIB3NtI_ttPGBoV",
"_score" : 3.0,
"_source" : {
"keyword" : "get my money"
}
},
{
"_index" : "test-index",
"_type" : "_doc",
"_id" : "6ny8wXIB3NtI_ttPGBpV",
"_score" : 3.0,
"_source" : {
"keyword" : "my money get here"
}
}
]
}
}
Thank you