cs_Folder_AddFolder///cs_Folder_DeleteFolder///cs_Folder_GetFeeds

cs_Folder_GetFeeds
ALTER  PROC [dbo].cs_Folder_GetFeeds
    @UserId INT,
    @SettingsID int,
    @FolderId INT = NULL

AS

/**//*如果为空执行如下查询，不为空，再执行如下查询。好象什么都没说的样子，省略…………*/
IF (@FolderId IS NULL)
  BEGIN

    SELECT  cf1.FeedId,
        cf1.Url,
        cf1.Title,
        cf1.Link,
        cf1.ETag,
        cf1.LastModified,
        cf1.Language,
        cf1.Generator,
        cf1.SubscribeDate,
        cf1.LastUpdateDate,
        cf1.FeedStateId,
        cff.FolderFeedId
        ,[UnreadCount] = ( select count(*) from (Select top 50 f.FeedPostID, f.FeedId FROM cs_FeedPost f where f.FeedId = cf1.FeedId order by PubDate DESC) fp left outer join cs_UserReadPost urp on fp.FeedPostID = urp.FeedPostID where fp.FeedId = cff.FeedId and urp.UserId IS NULL )
    FROM    cs_Feed AS cf1,
            cs_FolderFeed AS cff
    WHERE cff.FeedId = cf1.FeedId
      AND cff.UserId = @UserId
      AND cff.FolderId IS NULL 
      AND cf1.SettingsID = @SettingsID
    ORDER BY cf1.Title

  END

ELSE
  BEGIN

    SELECT  cf1.FeedId,
        cf1.Url,
        cf1.Title,
        cf1.Link,
        cf1.Language,
        cf1.Generator,
        cf1.ETag,
        cf1.LastModified,
        cf1.SubscribeDate,
        cf1.LastUpdateDate,
        cf1.FeedStateId,
        cff.FolderFeedId
        ,[UnreadCount] = ( select  count(*) from (Select top 50 f.FeedPostID, f.FeedId FROM cs_FeedPost f where f.FeedId = cf1.FeedId order by PubDate DESC) fp left outer join cs_UserReadPost urp on fp.FeedPostID = urp.FeedPostID where fp.FeedId = cff.FeedId and urp.UserId IS NULL )
    FROM    cs_Feed AS cf1,
            cs_FolderFeed AS cff
    WHERE cff.FeedId = cf1.FeedId
      AND cff.UserId = @UserId
      AND cff.FolderId = @FolderId 
      AND cf1.SettingsID = @SettingsID
    ORDER BY cf1.Title

END

cs_Folder_DeleteFolder
ALTER  PROC [dbo].cs_Folder_DeleteFolder
    @FolderId INT
AS

-- First, let's delete any associated feeds.
--先删除关联表中的记录
DELETE
FROM cs_FolderFeed
WHERE FolderId = @FolderId

-- Now, delete the folder.
--然后再删除主表的记录
DELETE
FROM cs_Folder
WHERE FolderId = @FolderId

cs_Folder_AddFolder
ALTER  PROC [dbo].cs_Folder_AddFolder
    @UserID INT,
    @FolderName NVARCHAR(50),
    @ParentFolderId INT = NULL,
    @SettingsID INT,
    @FolderId INT OUTPUT
AS
/**//*添加记录，然后返回ID*/
INSERT INTO cs_Folder
(
    UserId,
    FolderName,
    ParentFolderId,
    SettingsID
    
)
VALUES
(
    @UserId,
    @FolderName,
    @ParentFolderId,
    @SettingsID
)

SELECT @FolderId = @@IDENTITY