我们可以在JOOQ中使用SelfJoin吗？
Select Count(1) CountPayments
From PaymentDetail APD1, PaymentDetail APD2, Payment AP
where APD1.PaymentNumber =123
and APD1.BillNumber > 0
and APD2.BillNumber = APD1.BillNumber
and APD2.PaymentNumber <> APD1.PaymentNumber
and AP.PaymentNumber = APD2.PaymentNumber
如果是，我们如何在上述查询中使用它？
最佳答案
The manual's section about aliasing tables可能会给你一些线索。
本质上，只需为您的表分配别名即可:
PaymentDetail APD1 = PaymentDetail.as("APD1");
PaymentDetail APD2 = PaymentDetail.as("APD2");
Payment AP = Payment.as("AP");
DSL.using(configuration)
.select(count(1).as("CountPayments"))
.from(APD1, APD2, AP)
.where(APD1.PaymentNumber.eq(123))
.and(APD1.BillNumber.gt(0))
.and(APD2.BillNumber.eq(APD1.BillNumber))
.and(APD2.PaymentNumber.ne(APD1.PaymentNumber))
.and(AP.PaymentNumber.eq(APD2.PaymentNumber))
关于java - 如何在 Jooq 中使用 SelfJoin？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20467972/