title: How to get a json object as column in postgresql?
body: <p>I have these table on mu PostgreSQL 9.05:</p>
  
  <p>Table: <code>core</code>
  Fields: <code>name</code>, <code>description</code>, <code>data</code></p>
  
  <p><code>data</code> field is a json field, with (for example): <code>{"id": "100", "tax": "4,5"}</code></p>
  
  <p>Always is <code>one</code> json per data.</p>
  
  <p>My question is: can I get all JSON fields as query fields? return like these: <code>name, description, id, tax....</code> </p>
  
  <p>The problem is: my JSON does have various fields, can be Id, tax or other.</p>