我正在使用 LINQPad 将 SQL 转换为 LINQ 并在此过程中学习 LINQ。不过,我遇到了一些问题,希望有人可以查看我生成的 LINQ 代码,看看我是否走在正确的轨道上?
这是我的 SQL 代码:
Select Count(Convert(varchar(250),
Comment.CommentId)) as Num,
DiscussionBoard.ItemName,
Status.Status,
Status.Sequence
From Comment inner join status on Comment.StatusID = Status.StatusID
inner join DiscussionBoard on Comment.DiscussionBoardID
= DiscussionBoard.DiscussionBoardID
WHERE discussionboard.DiscussionBoardID
= '3ab7c139-317c-4450-9823-45a40ea6d0ff'
Group By status.Status,
Status.Sequence,
DiscussionBoard.ItemName
ORDER BY Status ASC
这是我到目前为止提出的 LINQ 代码。忍受我,我刚刚学习 LINQ,我还没有完全理解它。任何指针将不胜感激:
from Comment in Comments
where DiscussionBoard.DiscussionBoardID == '3ab7c139-317c-4450-9823-45a40ea6d0ff'
join Status in Statuses on Comment.StatusID equals Statuses.StatusID
join DiscussionBoard in DiscussionBoards on Comment.DiscussionBoardID equals DiscucussionBoard.DiscussionBoardID
group CountGroup by new {
Status.Status,
Status.Sequence,
DiscussionBoard.DiscussionBoardID
}
select new
{
Count = CountGroup.Count(),
DiscussionBoard.ItemName,
Status.Status,
Status.Sequence
}