I'm using linq2db ORM in my project and have the following database schema (simplified):
I have the following method to get information about the user:
public async Task<User> GetUser(int id)
{
var user =
await (
from u in _db.Users
.LoadWith(u => u.Accounts)
.ThenLoad(a => a.Transactions)
where u.Id == id
from lang in _db.Languages.LeftJoin(l => l.Id == u.LanguageId)
select u)
.FirstOrDefaultAsync();
return user;
}
However, I wanted to get the information about all the limits and aggregators for each account. I believe there should be an efficient way to do that. Could someone help me with that?
When we use LoadWith()
, after using ThenLoad()
, it's going to start from the root ( User
table), like this:
from u in _db.Users
.LoadWith(u => u.Accounts)
.ThenLoad(a => a.Transactions)
.LoadWith(u => u.Accounts)
.ThenLoad(a => a.Limits)
.LoadWith(u => u.Accounts)
.ThenLoad(a => a.Aggregators);
You can also use
Include()
andThenInclude()
instead ofLoadWith()
andThenLoad()
. Include vs Load .
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.