title: Finding mean, standard deviation ,percentiles for all numeric variables in table
body: <p>I have 30 numeric numeric columns in a table .I want to find mean,std, percentiles for all the columns in table.I don't want to write all the column names manually like below</p>
  
  <pre><code>select date,
        avg(col1), stddev(col1),
        avg(col2), stddev(col2), 
  from table name group by date;
  </code></pre>
  
  <p>Is there any way to find mean, std, percentiles for all the columns at once.</p>