title: How to revert update query in sql server?
body: <p>I am using SQL Server for my database. now there is table which has following columns.</p>
  
  <pre><code>PK_ID   FK_ID   Name   Description
  1        5       ABC      ABCDE
  2        7       EFG      EFT
  3        8       XUZ      Xyz
  4        11      TEF      TEF
  </code></pre>
  
  <p>Now by mistake i update some Fk_ID field with null value. Now I want to get back my all fk_id which is updated by null value. So is there any way to revert back fk_id's which has value previously?</p>
  
  <p>Can any one help me out to find out solution for the same?</p>