### Description

This is to investigate what we could do to support the data streams in SQL. The backing indices can be queried already, but to address them similarly as they're queried over QDSL one would need to construct a pattern learned out of band and not through SQL metadata discovery mechanisms.
x-pack/plugin/sql/qa/server/src/main/java/org/elasticsearch/xpack/sql/qa/rest/RestSqlTestCase.java
response = runSqlAsTextWithFormat(query, "csv");
        assertEquals(expected, response.v1());
    }
    public void testQueryWithoutHeaderInCSV() throws IOException {
        index(
            "{\"name\":" + toJson("first") + ", \"number\" : 1 }",
            "{\"name\":" + toJson("second\t") + ", \"number\": 2 }",
            "{\"name\":" + toJson("\"third,\"") + ", \"number\": 3 }"
        );
        String expected = """
            first,1\r
            second\t,2\r
            ""\"third,""\",3\r
            """;
        String query = "SELECT * FROM " + indexPattern("test") + " ORDER BY number";
        Tuple<String, String> response = runSqlAsText(query(query), "text/csv; header=absent");
        assertEquals(expected, response.v1());
    }
    public void testNextPageCSV() throws IOException {
        executeQueryWithNextPage("text/csv; header=present", "text,number,sum\r\n", "%s,%d,%d\r\n");
    }
    public void testCSVWithDelimiterParameter() throws IOException {
        String format = randomFrom("txt", "tsv", "json", "yaml", "smile", "cbor");
        String query = "SELECT * FROM " + indexPattern("test");
        index("{\"foo\":1}");
        Request badRequest = new Request("POST", SQL_QUERY_REST_ENDPOINT);
        badRequest.addParameter("format", format);
        badRequest.addParameter("delimiter", ";");
        badRequest.setEntity(
            new StringEntity(