eDisMax parser issue running over multiple fields - solr

Question

Enviornment ==> solr - solr-8.9.0, java version "11.0.12" 2021-07-20 LTS
Following .csv file is indexed in solr
books_id,cat,name,price,inStock,author,series_t,sequence_i,genre_s
0553573403,book,Game Thrones Clash,7.99,true,George R.R. Martin,"A Song of Ice and Fire",1,fantasy
0553573404,book,Game Thrones,7.99,true,George Martin,"A Song of Ice and Fire",1,fantasy
0553573405,book,Game Thrones,7.99,true,George,"A Song of Ice and Fire",1,fantasy
I want to search for a book with having a name saying 'Game Thrones Clash'(with mm=75%) and author George R.R. Martin(with mm=70%.)
Now I want to search book-name in only the 'name' field having its minimum match value as well. Also, the author needs to be searched in author, with different mm values.
field-type : text_general is configured for fields :'name','author' with multivalued as false.
Query shall run over input field 'name'(mm=75%) having the value 'Game Thrones Clash' and author(mm=70%) having the value 'George R.R. Martin'.
There are 3 criteria over which results will be displayed, Only those results shall be displayed which satisfy all the following three criteria:
if there is a minimum of 75% of tokens are fuzzy matches in the 'name' field, then it should result in output.
if there is a minimum of 70% of tokens are fuzzy matches in the 'author' field, then it should result in output.
if field 'inStock' has value 'true'.
Output shall contain the following result.
0553573403 (name - 75% matched as well author 70% matched)
0553573404 (name - 75% matched as well author 70% matched)
Following books_id will not contain in output.
0553573405 (name - 75% matched but author not 70% matched)
I understand that Extended DisMax includes query parameters 'mm'(Minimum should match) with fuzzy search functionality, but the following query is giving all 3 results.
curl -G http://$solrIp:8983/solr/testCore2/select --data-urlencode "q=(name:'Game~' OR name:'Thrones~' OR name:'Clash~')" --data-urlencode "defType=edismax" --data-urlencode "mm=75%" --data-urlencode "q=(author:'George~' OR author:'R.R.~' OR author:'Martin~')" --data-urlencode "defType=edismax" --data-urlencode "mm=70%" --data-urlencode "sort=books_id asc"
{
"responseHeader":{
"status":0,
"QTime":3,
"params":{
"mm":["75%",
"70%"],
"q":["(name:'Game~' OR name:'Thrones~' OR name:'Clash~')",
"(author:'George~' AND author:'R.R.~' AND author:'Martin~')"],
"defType":["edismax",
"edismax"],
"sort":"books_id asc"}},
"response":{"numFound":3,"start":0,"numFoundExact":true,"docs":[
{
"books_id":[553573403],
"cat":["book"],
"name":"Game Thrones Clash",
"price":[7.99],
"inStock":[true],
"author":"George R.R. Martin",
"series_t":"A Song of Ice and Fire",
"sequence_i":1,
"genre_s":"fantasy",
"id":"3de00ecb-fbaf-479b-bfde-6af7dd63c60f",
"_version_":1738326424041816064},
{
"books_id":[553573404],
"cat":["book"],
"name":"Game Thrones",
"price":[7.99],
"inStock":[true],
"author":"George Martin",
"series_t":"A Song of Ice and Fire",
"sequence_i":1,
"genre_s":"fantasy",
"id":"a036a400-4f54-4c90-a52e-888349ecb1da",
"_version_":1738326424107876352},
{
"books_id":[553573405],
"cat":["book"],
"name":"Game Thrones",
"price":[7.99],
"inStock":[true],
"author":"George",
"series_t":"A Song of Ice and Fire",
"sequence_i":1,
"genre_s":"fantasy",
"id":"36360825-1164-4cb6-bf48-ebeaaff0ef10",
"_version_":1738326424111022080}]
}}
Can someone help me in writing edismax query or any other way around?

Answer 1

Nested Queries can specify different query parameters for different parts of the query.
+_query_:"{!edismax mm=75% df=name} Game~ Thrones~ Clash~"
+_query_:"{!edismax mm=70% df=author} George~ R.R.~ Martin~"
+inStock:true
Nested Queries are specified by using _query_: as the prefix (see references [1], [2]).
Local Params [3] {! ... }... specify the query parser and its parameters by prefixing the query string.
query type [4] eDisMax [5]: {!type=edismax}... or just {!edismax}...
minimum [should-term] match (mm) [6]: {!mm=75%}...
default field (df) [7]: {!df=author}...
Requiring both of two subqueries can be specified via either of the following:
+query1 +query2
query1 AND query2
Line breaks are for clarity, all lines are within one query parameter (q=).
(If multiple q= parameters exist, adding a debugQuery=true parameter shows that only one is parsed.)
Testing
Steps to reproduce test with a local Solr 9, in Cloud Mode for the Schema Designer page:
Command line: solr-9.0.0/bin/solr start -e cloud
answer questions until return to command prompt
In web browser, open Solr Admin: http://localhost:8983/solr/
On the Schema Designer tab,
click New Schema
Name New Schema: eDisMaxTest1
Copy From: _default
click Add Schema
Under Sample Documents, past csv data and clicked Analyze Documents.
Under Schema Editor, select fields author and name and
changed type to text_general.
disabled the [ ] Multi-Valued checkbox.
clicked Update Schema
To find URL: from Schema Designer page, open browser F12 debugger,
enable the Network tab,
perform a query: from the Query Tester, click RunQuery
copy the path http://localhost:8983/api/schema-designer/query
copy the parameters _=1658489222229 and configSet=eDisMaxTest1 (values may differ).
Request: one query string
bash: (\ before newline continues line, omit inside '...')
curl --silent --get localhost:8983/api/schema-designer/query \
--data-urlencode "_=1658489222229" \
--data-urlencode "configSet=eDisMaxTest1" \
--data-urlencode 'q= +_query_:"{!edismax mm=75% df=name} Game~ Thrones~ Clash~"
+_query_:"{!edismax mm=70% df=author} George~ R.R.~ Martin~"
+inStock:true' \
--data-urlencode "sort=books_id asc"
cmd: (^ before newline continues line, even inside '...')
curl --silent --get localhost:8983/api/schema-designer/query ^
--data-urlencode "_=1658489222229" ^
--data-urlencode "configSet=eDisMaxTest1" ^
--data-urlencode 'q= +_query_:"{!edismax mm=75% df=name} Game~ Thrones~ Clash~" ^
+_query_:"{!edismax mm=70% df=author} George~ R.R.~ Martin~" ^
+inStock:true' ^
--data-urlencode "sort=books_id asc"
Alternative request: use nested query parameter v=$param refer to other request parameters containing subquery terms.
bash: (\ before newline continues line, omit inside '...')
curl --silent --get localhost:8983/api/schema-designer/query \
--data-urlencode "_=1658489222229" \
--data-urlencode "configSet=eDisMaxTest1" \
--data-urlencode 'q= +_query_:"{!edismax mm=75% df=name v=$qname}"
+_query_:"{!edismax mm=70% df=author v=$qauthor}"
+inStock:true' \
--data-urlencode "qname= Game~ Thrones~ Clash~" \
--data-urlencode "qauthor= George~ R.R.~ Martin~" \
--data-urlencode "sort=books_id asc"
cmd: (^ before newline continues line, even inside '...')
curl --silent --get localhost:8983/api/schema-designer/query ^
--data-urlencode "_=1658489222229" ^
--data-urlencode "configSet=eDisMaxTest1" ^
--data-urlencode 'q= +_query_:"{!edismax mm=75% df=name v=$qname}" ^
+_query_:"{!edismax mm=70% df=author v=$qauthor}" ^
+inStock:true' ^
--data-urlencode "qname= Game~ Thrones~ Clash~" ^
--data-urlencode "qauthor= George~ R.R.~ Martin~" ^
--data-urlencode "sort=books_id asc"
Response: two books as desired
{
...
"responseHeader":{
...
"params":{
"q":" +_query_:\"{!edismax mm=75% df=name v=$qname}\"\n
+_query_:\"{!edismax mm=70% df=author v=$qauthor}\"\n
+inStock:true",
"qauthor":" George~ R.R.~ Martin~",
"qname":" Game~ Thrones~ Clash~",
"sort":"books_id asc",
"configSet":"eDisMaxTest1",
"wt":"javabin",
"version":"2",
"_":"1658489222229"}},
"response":{"numFound":2,"start":0,"numFoundExact":true,"docs":[
{
"name":"Game Thrones Clash",
"author":"George R.R. Martin",
...
"books_id":553573403,
"inStock":true},
{
"name":"Game Thrones",
"author":"George Martin",
...
"books_id":553573404,
"inStock":true}]
}}
References
[1] Nested Query Parser (Solr Reference Guide / Query Guide / Query Syntax and Parsers / Other Query Parsers)
https://solr.apache.org/guide/solr/latest/query-guide/other-parsers.html#nested-query-parser
[2] Nested Queries in Solr
https://lucidworks.com/post/nested-queries-in-solr/
[3] Local Params (Solr Reference Guide / Query Guide / Query Syntax and Parsers)
https://solr.apache.org/guide/solr/latest/query-guide/local-params.html
[4] Query type short form (Solr Reference Guide / Query Guide / Query Syntax and Parsers / Local Params)
https://solr.apache.org/guide/solr/latest/query-guide/local-params.html#query-type-short-form
[5] Extended DisMax (eDisMax) Query Parser (Solr Reference Guide / Query Guide / Query Syntax and Parsers)
https://solr.apache.org/guide/solr/latest/query-guide/edismax-query-parser.html
[6] mm (Minimum [Should-term] Match) Parameter (Solr Reference Guide / Query Guide / Query Syntax and Parsers / DisMax Query Parser)
https://solr.apache.org/guide/solr/latest/query-guide/dismax-query-parser.html#mm-minimum-should-match-parameter
[7] df [default field] (Solr Reference Guide / Query Guide / Query Syntax and Parsers / Standard Query Parser / Standard Query Parser Parameters)
https://solr.apache.org/guide/solr/latest/query-guide/standard-query-parser.html#standard-query-parser-parameters