title: How can I merge multiple data frames with the same columns in R?
body: <p>I want to join multiple data frames(5), they are exactly equal to this sample:
  Place1</p>
  
  <pre><code>   Date        Sales Price SKU
      2007/01/02   1     1.29 52648
      2007/01/02   2     1.99 48721
      2007/01/02   5     0.55 65897
      2007/01/02   2     5.00 56482
      2007/01/02   10    2.50 46521
  </code></pre>
  
  <p>different data frames have the same columns but different rows and I want to join them.
  I tried with the function merge but only let me do with 2.
  How can i do?</p>
  
  <p>Thanks</p>