title: adding mutiple things to a column x row position in mysql
body: <p>I have a database like this:</p>
  
  <p><a href="http://i.stack.imgur.com/bSMfb.png" rel="nofollow">Database example</a></p>
  
  <p>My problem is I need multiple entries in the Substrate spot.
  Kind of like a 3 dimensional database. I need to add in things like, hay, straw, potato peels etc. But it needs to be on the same spot like a list just for substrates. I cant go down the rows because that would be messing with the wrong mushroom and the only alternative I can think about is making substrate01, substrate02 substrate03 ... but since this can vary a lot, it makes no sense to make hundreds of rows just to reserve enough space for entries. One might only have 1 substrate and another might have 50 I need it to be dynamic.</p>