title: sql get every week start date between two dates
body: <p>I have a table that has this data
  Date when the employees <code>reported</code> and the week <code>start date</code>(monday) for that week.
  Now they did not work all the dates for example there is no data on week of christmas. 
  Is there a way I can add the missing week.So, I will still have the week start date for each and every week. But the report date can be null.</p>
  
  <p>I cannot declare variables.</p>
  
  <p><a href="https://i.stack.imgur.com/UPud8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UPud8.png" alt="enter image description here"></a></p>