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我們如何在hibernate中使用Criteria API來實現這一點。在休眠標準api中實現聯合的替代方案
select * from db2inst1.rel rel
join relcont relcontA on relcontA.relationshipno=rel.relationshipno and relcontA.contacttypecode='C02' and relcontA.contact='92512855'
where rel.SALUTATIONCODE like '%MDM%'
UNION
select * from db2inst1.rel rel
join relcont relcontB on relcontB.relationshipno=rel.relationshipno and relcontB.contacttypecode='RT1' and relcontB.contact='92512855'
where rel.SALUTATIONCODE like '%MDM%'