Joining on multiple columns in Linq to SQL is a little different. var query = from t1 in myTABLE1List // List<TABLE_1> join t2 in ... ... <看更多>

LINQ To DB supports all standard SQL join types: INNER, LEFT, FULL, RIGHT, CROSS JOIN. For join types that do not have ... Join operator on multiple columns. ... <看更多>

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from project in _db.Projects. join typeOfficial in _db.GuidContents on (short?)project.TypeOfficial equals typeOfficial.Value into TtypeOfficial. ... <看更多>

Assuming your group by in code is done with LINQ, I did a quick search on LINQ and ROW_NUMBER and found a nice how-to on stackoverflow. ... <看更多>