Load CSV data into films Core at solr-8.6.3\example\exampledocs directory:

java -Dc=films -Dtype=text/csv -jar post.jar ..\films\films.csv

Curl command can be executed anywhere.

curl "http://localhost:8983/solr/films/select?fl=name%2Cid%2Cdirected_by&q=name%3ADavid&sort=id%20desc"
curl "http://localhost:8983/solr/techproducts/select?facet.field=cat&facet=on&q=price%3A%5B100%20TO%20200%5D"