Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
678 views
in Technique[技术] by (71.8m points)

linq - Entity Framework T-Sql "having" Equivalent

How can I write a linq to entities query that includes a having clause?

For example:

SELECT State.Name, Count(*) FROM State
INNER JOIN StateOwner ON State.StateID = StateOwner.StateID
GROUP BY State.StateID
HAVING Count(*) > 1
See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Any reason not to just use a where clause on the result?

var query = from state in states
            join stateowner in stateowners
              on state.stateid equals stateowner.stateid
            group state.Name by state.stateid into grouped
            where grouped.Count() > 1
            select new { Name = grouped.Key, grouped.Count() };

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...