Elasticsearch's SQL JDBC is a type 4 driver, which means it is a pure Java driver and platform-independent. It connects directly to Elasticsearch and converts JDBC calls to Elasticsearch SQL. According to the support matrix of the official website (https://www.elastic.co/subscriptions#request-info), JDBC support is only available for the platinum license. If the Elasticsearch software is downloaded, or the open source version used, it will be a basic version. Therefore, let's follow the instructions provided in the following section to perform an upgrade.
Elasticsearch SQL JDBC
Upgrading Elasticsearch from a basic to a trial license
To run the sample program, go to the Kibana license manager to upgrade from a basic...