sql - What does this tree look like? -


i have table ancestors , leaves describes tree. how directed graph like? can't seem diagram work.

  ancestor       leaf ---------- ----------      1          6      1          8      1          9      2          6      2          8      2          9      3          6      3          8      3          9      4          8      4          9      5          6      5          8      7          8

do know tree is? if draw graph above data see there several loops. can't tree.


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