I am not sure exactly what you are looking for but this might help.
SELECT slad.sla_id, slad.name, slad.period_code, slad.period_number, slad.period_start, slad.period_begin, slad.period_end, slad.original_id, slod.slo_id, slod.name AS sloname, slod.description, slod.weight,
slod.compliance_percentage, sQC.qos_const_id, sQC.qos, sQC.source, sQC.target
FROM S_SLA_DEFINITION AS slad INNER JOIN
S_SLO_DEFINITION AS slod ON slad.sla_id = slod.sla_id INNER JOIN
S_QOS_CONSTRAINTS AS sQC ON slod.slo_id = sQC.slo_id