title: How to get relationaship from SQL query
body: <p>I have normalise database in MySQL. There is not any relationship defined in the database between any two tables. All relationship are virtual.</p>
  
  <p>It is very hard to find the relationship between the tables while debuging the large query. </p>
  
  <p>Is any tool available which can find out the relations between tables from the large query?</p>