title: Trying to Merge data from one table to another
body: <p>Trying to do a process where I have a table that is existing. This is table A</p>
  
  <p>I have staging table which I have uploaded the data. This is table B.</p>
  
  <p>Table A already contains data in there apart from some data which i need added from table B to Table A.</p>
  
  <p>So Table B has a extra column which I need it to match with the data already existing in Table A.</p>
  
  <p>So layout currently in Table A is:</p>
  
  <pre><code>Column 1 Column 2 Column 3
  
  AB
  
  ABC
  </code></pre>
  
  <p>Layout in Table B is:</p>
  
  <pre><code>Column 1 Column 2 Column 3
  
  ABC      Yellow   Test1
  
  AB       Blue     Test2
  </code></pre>
  
  <p>So I need these columns 2 and 3 moved to table A from Table B, so they match correctly with the data that is already in column 1. </p>
  
  <p>Tried my best to explain and english is my 2nd language, so i apologise for any mistakes. Anyway know what best way to go with this, would it be a merge?</p>
  
  <p>Thanks </p>