title: Update with changing set value
body: <p>How can we write an update sql statement that would update records and the 'set' value changes every time?</p>
  
  <p>For example:
  If we have records like this</p>
  
  <pre><code>SomeNumber SomeV CurCode WhatCodeShouldBe
  200802754 432 B08 B09
  200802754 432 B08 B09
  200802754 432 B08 B09
  200808388 714 64B C00
  200804119 270 64B C00
  </code></pre>
  
  <p>I wish to update each 'SomeNumber' record so that 'CurCode' will be same as 'WhatCodeShouldBe'</p>
  
  <p>Thanks for any help!</p>