Row number functionality in Hive
<p>How can I generate row numbers for an existing table while running a select query?<br/>
For example:</p>

<pre><code>select row_number(), * from emp;
</code></pre>

<p>I am using hive 0.13. I can't access external jars or udfs in my environment.
The underlying files are in parquet format.</p>

<p>Thanks in advance!</p>