title: What does the column skew_sorkey1 in Amazon Redshift's svv_table_info imply?
body: <p>Redshift's documentation (<a href="http://docs.aws.amazon.com/redshift/latest/dg/r_SVV_TABLE_INFO.html" rel="noreferrer">http://docs.aws.amazon.com/redshift/latest/dg/r_SVV_TABLE_INFO.html</a>) states that the definition of the column skew_sortkey1 is - Ratio of the size of the largest non-sort key column to the size of the first column of the sort key, if a sort key is defined. Use this value to evaluate the effectiveness of the sort key.</p>
  
  <p>What does this imply? What does it mean if this value is large? or alternatively small? </p>
  
  <p>Thanks!</p>