title: Mysql escaping recount integers in REPLACE
body: <p>I have a replace statement to replace numerical values in columns with text, the text may contain numbers, how to avoid re-replacing these numbers?</p>
  
  <pre><code>update 
  `obsmaintble` 
  set
  `obsvteduration` = REPLACE(`obsvteduration`, '0', 'No C-Section'), 
  `obsvteduration` = REPLACE(`obsvteduration`, '1', 'LOS equal or more than \4 - Given up to discharge'), 
  `obsvteduration` = REPLACE(`obsvteduration`, '2', 'LOS equal or more than \4 - Given for &lt; \4 days'),
  `obsvteduration` = REPLACE(`obsvteduration`, '3', 'LOS less than \4 Given up to discharge'), 
  `obsvteduration` = REPLACE(`obsvteduration`, '4', 'Not given'), 
  </code></pre>