想要將SQL查詢更改爲LINQ

Question

我想將下面的簡單SQL查詢更改爲LINQ，我該如何更改它？

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

與此相似？

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

Answer 1

這裏代碼的LINQ to 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有數據類型爲布爾：

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有數據類型爲字符串：

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