Query with different time format does not work if database is not specified.

If you do not specify database in query (even thou you have specified database on the client level) method InfluxDBl#query(Query, TimeUnit) will not return any result because it will not send database information.

Steps to reproduce:

InfluxDB influxDB = InfluxDBFactory.connect(host + ":" + port);
influxDB.setDatabase(database);
// queryResult will be empty.
QueryResult queryResult = influxDB.query(new Query("..."),  TimeUnit.NANOSECONDS)

Quick fix:

InfluxDB influxDB = InfluxDBFactory.connect(host + ":" + port);
influxDB.setDatabase(database);
// queryResult will be empty.
QueryResult queryResult = influxDB.query(new Query("...", "database"),  TimeUnit.NANOSECONDS)

Permanent fix:
Change into "InfluxDBImpl#query(Query, TimeUnit)" into:

public QueryResult query(final Query query, final TimeUnit timeUnit) {
   String db = query.getDatabase();
    if (db == null) {
        db = this.database;
    }
    Call<QueryResult> call = null;
    if (query instanceof BoundParameterQuery) {
        BoundParameterQuery boundParameterQuery = (BoundParameterQuery) query;
        call = this.influxDBService.query(db,
                TimeUtil.toTimePrecision(timeUnit), query.getCommandWithUrlEncoded(),
                boundParameterQuery.getParameterJsonWithUrlEncoded());
    } else {
        call = this.influxDBService.query(db,
                TimeUtil.toTimePrecision(timeUnit), query.getCommandWithUrlEncoded());
    }
    return executeQuery(call);
  }

Here database information is taken from client level if not given in query object.

Start at InfluxDBImpl#query(Query, TimeUnit) and inspect how Query.getDatabase() and the client-level database are passed to influxDBService.query. Verify both regular Query and BoundParameterQuery behavior. Done means a query without its own database uses the database configured on the client and returns results with the requested time precision.