_curl.exec.query.partial

curl -G \
  --data-urlencode "query=SELECT x FROM long_sequence(5);" \
  http://localhost:9000/exec

The JSON response contains the original query, a "columns" key with the schema of the results, a "count" number of rows and a "dataset" with the results.

{
  "query": "SELECT x FROM long_sequence(5);",
  "columns": [{ "name": "x", "type": "LONG" }],
  "dataset": [[1], [2], [3], [4], [5]],
  "count": 5
}