在休眠標準api中實現聯合的替代方案

Question

我們如何在hibernate中使用Criteria API來實現這一點。

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%' 

Answer 1

這可以幫助你： how to perform union clause query with hibernate criteria api

你的SQL查詢確實是不可讀。對於下一個問題，請考慮KISS。