title: Comma Separated values with SQL Query
body: <p>My SQL table is like following</p>
  
  <pre><code>City_Code     Post_Code    Post_Code_Description
  100           A1           ABC
  100           C8           XYZ
  100           Z3           MNO
  200           D4           LMN
  300           E3           IJK
  300           B9           RST
  </code></pre>
  
  <p>It's a mapping between city_code and Post_Code. One City_Code has many Post Codes. Now i want to run a Query to get something like following</p>
  
  <pre><code>City_Code     Post_Code    Post_Code_Description
  100           A1,C8,Z3     ABC,XYZ,MNO
  200           D4           LMN
  300           E3,B9        IJK,RST
  </code></pre>
  
  <p>Can you please help me with thisy SQL table is like following</p>