Re: Use array in a dynamic statement

On Thu, Mar 5, 2009 at 8:32 PM, Sophie Yang <yangsophie(at)yahoo(dot)com> wrote:
>
> I was wondering why USING clause is not supported in pl/pgsql dynamic statement. Serialization is the option I tried to avoid, but it seems there is no better approach available.
>
> Just to say a few more about the usage of my function. In dag_tree_1, (rid, rtid) is the primary key, which identifies a node in a tree structure. The idx field is a kind of dewy index. for example:
> rid       rtid     idx
> 1123   1       0000.0006.0033
> 3231   1       0000.0006
> 786     6       0000.0007.8853
> 80923  2       0000.0007.8853.2382
>
> The function takes in a list of rid and rtid pair (nids), sort them by the length of the dewy index, which is equivalent to sort the nodes by their tree depth. That's what I try to achieve. Maybe someone has different idea to implement the function?

Well the function is pretty simple. Maybe you could merge the logic
encapsulated by the function into the containing query?

...Robert