Oracle SQL Hierarchical query bottom to top -


i have ids of leafs. need select id in hierarchy. i'm using following query: 

select distinct id  table start id in (ids_of_leafs) connect id = prior pid

but maybe can done way without distinct , traversal full hierarchy?

no, not possible without additional stuff adding custom index value every row , calculate mathematically things select. not native , heavy solution. cannot replace query if not know height of tree, , need manually write amount of select statements equals height of tree.

if have problems performance, create indices or materialized view collect parents every leave.


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