Question: I'm using Bigquery's Java API. I'm running a select query and want the result saved to a destination table. 

I've set the loadConfig.setDestinationTable() but I am getting "Load configuration must specify at least one source URI". 

Could you please explain what am I doing wrong?

Answer: 
You don't want to set the loadConfig destination table, but the queryConfig.setDestinationTable() instead (since this isn't a load job -- it is a query job). As Fh said, if you share the code you're using we can give more detailed help.
this is the code i am using to do this:

```
    public static String copyTable(String project, String dataSet, String table) {

        String newTableName = table + "_copy_"+System.currentTimeMillis();;
        try {
            Job copyJob = new Job();

            TableReference source = new TableReference();
            source.setProjectId(project);
            source.setDatasetId(dataSet);
            source.setTableId(table);
            TableReference destination = new TableReference();
            destination.setProjectId(project);
            destination.setDatasetId(dataSet);
            destination.setTableId(newTableName);

            JobConfiguration configuration = new JobConfiguration();
            JobConfigurationTableCopy copyConf = new JobConfigurationTableCopy();
            copyConf.setSourceTable(source);
            copyConf.setDestinationTable(destination);

            configuration.setCopy(copyConf);
            copyJob.setConfiguration(configuration);

            bigquery.jobs().insert(project, copyJob).execute();
            return newTableName;
        } catch (Exception e) {
            e.printStackTrace();
            logger.warn("unable to copy table :" + project + "."
                    + dataSet + "." + table, e);
            throw new RuntimeException(e);
        }
    }

```

please contact me if you have any more questions