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问题描述
我试图在petapoco
中这样做var people
= db.Query<Person>("SELECT * FROM people").Where(p =>
p.FirstName.Equals("George") && p.LastName.Equals("Clooney")).ToList();
问题在于它从数据库中获取整个记录集，然后在其上执行过滤.我尝试获取而不是查询，结果相同.
如何编写查询，以便它发送查询以获取数据库的过滤结果，而不是在WebServer上进行过滤?
推荐答案
var people = db.Fetch<Person>("where firstname = @0 and lastname = @1",
"George", "Clooney");
或使用npoco(基于petapoco的)这也可能
var people = db.FetchWhere<Person>(x=>x.FirstName == "George"
&& x.LastName == "Clooney");
问题描述
I am trying to do this in petapoco
var people
= db.Query<Person>("SELECT * FROM people").Where(p =>
p.FirstName.Equals("George") && p.LastName.Equals("Clooney")).ToList();
the problem is that it gets the entire set of records from the database and then performs the filtration on it. I tried Fetch instead of query, same result.
How do I write the query so that it sends the query to get the filtered results from the database, instead of doing the filtering at the webserver?
推荐答案
var people = db.Fetch<Person>("where firstname = @0 and lastname = @1",
"George", "Clooney");
or using NPoco (which which is based off PetaPoco) this is also possible
var people = db.FetchWhere<Person>(x=>x.FirstName == "George"
&& x.LastName == "Clooney");
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