title: Update column in a table with sql
body: <p>I have the following table test </p>
  
  <pre><code>id       Name           idREF     FORMULE 
  1        A              gR        gR1+gR2+gR3  
  2        B              gR1       123  
  3        C              gR2       124  
  4        e              gR3       125 
  11       A1             gR11      gR21-gR31  
  12       B1             gR21      1231  
  13       C1             gR31      1241  
  </code></pre>
  
  <p>How can I modify the table test : replace formule(+ or -) by its value .</p>
  
  <p>So I will get </p>
  
  <pre><code>  id       Name           idREF     FORMULE     FORMULERESULT 
    1        A              gR        gR1+gR2+gR3 123+124+125 
    2        B              gR1       123          123  
    3        C              gR2       124          124  
    4        e              gR3       125          125  
    11       A1             gR11      gR21-gR31   1231-1241 
    12       B1             gR21      1231         1231  
    13       C1             gR31      1241         1241   
  </code></pre>