title: Delete from table using multiple identifying columns in another table
body: <p>I have two tables as described:</p>
  
  <p>Table 1</p>
  
  <p>Column A, Column B, Column C, Column D</p>
  
  <p>Table 2</p>
  
  <p>Column A, Column B, Column C, Column E, Column F</p>
  
  <p>There is no relationship between the tables other than the data contained within them (table 2 is a temporary table). I want to delete rows from table one where they exist in table 2. However, it must be based on the combination of three columns. For example, delete in table 1 if there is a record in table two where columns A, B and C all match.</p>