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Posted by FatCoin on 12/09/05 11:54
J.O. Aho wrote:
> FatCoin wrote:
>
>>Hi.
>>I had one table organized like
>>
>>entry_id (int)
>>parent (int)
>>
>>so i need to create menu from database.
>>Every entry that parent = 0 is topmost level of menu. Every entry that
>>has no child is article.
>>I write recursive function that fetch rows but I need to test every row
>>in db, so if any of you know how to fetch only that rows that has
>>children (other row parent is row id).
>
>
> SELECT DISTINCT parent FROM table WHERE parent>0;
>
> This will give you all parents and each parent should be in the list just once
> too.
>
>
> //Aho
No subqueries!? Simple solution is the best solution, thank you.
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