title: "update" sql for remove same string from all rows
body: <p>My website attacked and hackers adds <strong>same</strong> string to all of my rows.<br>
  For example if the value of a row was <code>"True value"</code> they changed it to <code>"True Value HACKED STRING ... HACKED  by .. "</code> </p>
  
  <p>Unfortunately my site have lots of data and I can't change them one by one, but fortunately same data adds to all rows.
  I want an SQL statement that removes all <code>HACKED STRING</code> from all rows.</p>