SELECT distinct LEVEL, bprod, bchld, bqreq
FROM mbm
START WITH bprod = '9J.J1B77.B5A'
AND bid = 'BM'
AND bdeff <= 20061230
AND bddis >= 20061230
CONNECT BY PRIOR bchld = bprod
and bid = 'BM'
AND bdeff <= 20061230
AND bddis >= 20061230
ORDER BY LEVEL, bprod, bchld
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