title: Find Consecutive 0s SQL
body: <p>I have the following table</p>
  <pre><code>User    Day    Usage
  User1   1      9
  User1   2      11
  User1   3      0
  User1   4      0
  User1   5      0
  User1   6      0
  User1   7      0
  User2   1      20
  User2   2      0
  User2   3      0
  User2   4      0
  User2   5      0
  User2   6      0
  User2   7      13
  User2   8      11
  </code></pre>
  <p>I want to find the user ids where usage is 0 for 5 consecutive days and also the day when it started.</p>
  <p>In the above case, the answer should be</p>
  <pre><code>User    Day
  User1   3
  </code></pre>
  <p>Any help is appreciated! Thank you.</p>