title: Merge two csv files based on common column
body: <p>I have two csv files with data, which contains one common column with the same data (ex. product P/N that is unique).</p>
  
  <p>How to merge all data into one spreadsheet?</p>
  
  <p><strong>File one</strong></p>
  
  <pre><code>P/N | Name        | Quantity
  xxx | Product xxx | 3
  zzz | Product zzz | 6
  yyy | Product yyy | 0
  </code></pre>
  
  <p><strong>File two</strong></p>
  
  <pre><code>P/N | Image
  zzz | Image URL zzz
  xxx | Image URL xxx
  yyy | Image URL yyy
  </code></pre>
  
  <p><strong>What i want?</strong></p>
  
  <pre><code>P/N | Name        | Quantity | Image 
  xxx | Product xxx | 3        | Image URL xxx
  zzz | Product zzz | 6        | Image URL zzz
  yyy | Product yyy | 0        | Image URL yyy
  </code></pre>