jdbc使用oracle中merge into函数

merge into可以使oracle数据表中已有数据进行合并。即有则update，否则更新

下边的示例是在jdbc数据源连接后测试通过的

1、单条数据

Long companyAuthId = SeqkeyUtil.getSeqKey(vids, "COMPANY_AUTH_ID");CompanyAuth comtmp = companyList.get(0);String sql = "merge into COMPANY_AUTH auth using (select ? MOBILE  from dual) tmp on (auth.mobile=tmp.mobile)"+ " WHEN MATCHED THEN"+ " UPDATE SET auth.reserve=?"+ " WHEN NOT MATCHED THEN"+ " INSERT (id,MOBILE) VALUES (?, ?)";vids.update(sql, new Object[]{comtmp.getMobile(),comtmp.getReserve(),companyAuthId+"",comtmp.getMobile()});

2、多条数据（批处理）

Long companyAuthId = SeqkeyUtil.getSeqKey(vids, "COMPANY_AUTH_ID");//seqs 表主键使用 List batch = new ArrayList();   for (CompanyAuth company : companyList) { Object[] values = new Object[] {company.getMobile(),company.getReserve(),companyAuthId+"",company.getMobile() }; batch.add(values);  }String sql = "merge into COMPANY_AUTH auth using (select ? MOBILE  from dual) tmp on (auth.mobile=tmp.mobile)"+ " WHEN MATCHED THEN"+ " UPDATE SET auth.reserve=?"+ " WHEN NOT MATCHED THEN"+ " INSERT (id,MOBILE) VALUES (?, ?)";vids.batchUpdate(sql, batch);

如果出现多张表的话只需要针对using (select ? MOBILE from dual) tmp on修改即可