Opps. Well, yes it should read themeID = themeID. But I'm still getting an error:
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-Theme_Relationship ON Products.prodID=Product-Theme_Relationship.prodID INNER J' at line 5
My corrected code (that still doesn't work) is:
...
INNER JOIN Size ON Products.sizeID=Size.sizeID
INNER JOIN Product-Theme_Relationship ON Products.prodID=Product-Theme_Relationship.prodID
INNER JOIN Theme ON Product-Theme_Relationship.themeID=Theme.themeID
...