Question

I am new for sql . It that that any best suited to manage and dynamic create hierarchical data in database with efficiently and simply way?
Say for a sample , I am using grid view to view hierarchical data. My grid view need to display like below.

Red             <---Fruit 1
   Apple
   strawberry

Yellow          <-----Fruit 2
   banana
      Papaya

Please assist me how to design database structure in this scenario. On the other hand, how can I perform sorting also. For example:
I change the sequence number becoming

   Yellow          <-----Fruit 2 become Fruit 1
       banana
          Papaya

    Red             <---Fruit 1 become Fruit 2
       Apple
       strawberry

Here is my table(parent and child column)

Parent   Child
null      Red
Red       Apple
Red       Strawberry
null      Yellow
Yellow    banana
banana    papaya

Please guild me some idea and provide me some example. THanks

Answer 1

Check my answer to a similar post. Solution used a recursive CTE. This solution also involved an id column, and an additional sort key column, which you could add to your source table (or query) for custom sorting.