linq - 想要将 SQL 查询更改为 LINQ

Question

我想将下面的简单 SQL 查询更改为 LINQ，如何更改？

select * from table1 where isPaid = 'true' and  Id in (select Id from table2 where EmployeeId = 12) 

类似于这个？

from pa in db.PaymentAdvices
where pa.IsPaid == true
orderby pa.PaidDate descending
select pa;

Answer 1

这里代码linq到sql：

from t1 in table1
join t2 in table2 on t1.Id equals t2.Id
where t2.EmployeeId = 12
select t1

希望有用！

Answer 2

如果字段isPaid的数据类型为Boolean：

from t1 in table1
join t2 in table2 on t1.Id equals t2.Id
where t2.EmployeeId = 12 and t1.isPaid == true
select t1

如果字段isPaid的数据类型为String：

from t1 in table1
join t2 in table2 on t1.Id equals t2.Id
where t2.EmployeeId = 12 and t1.isPaid.Equals("true")
select t1