Sql server 如果由于ORDER BY子句中的case语句导致select DISTINCT错误，则ORDER BY项目必须出现在select列表中

我在select中添加了order by列，然后出现了一个错误

如果由于ORDER BY子句中的case语句导致select DISTINCT，则ORDER BY项目必须出现在select列表中

这是针对SQL Server 2012的

DECLARE @SortType VARCHAR(20) = 'lUf'

SELECT DISTINCT
    COUNT(*) OVER () AS Count,      
    nm.NoteID, nm.Title, 
    Description, CreatedDate, Createddatetime, 
    nm.BusinessID, CreatedUser, nm.LastUpdatedDatetime 
FROM
    PLO.NotesMaster nm with(nolock) 
LEFT JOIN
    PLO.NoteTags nt ON nm.NoteID = nt.NoteID
WHERE 
    (nm.Title LIKE '%'+@keyword+'%'  OR COALESCE(@keyword ,'')='')
    AND (nt.TagID = @TagID OR COALESCE(@TagID, '') = '')
    AND (nm.BusinessID = @BusinessID)
    AND (nm.CreatedUser = @UserID)
    AND (nm.Status != 2)
ORDER BY
    Pinned DESC,
    (CASE @SortType
        WHEN 'lUf' THEN nm.LastUpdatedDatetime
     END) DESC,
    (CASE @SortType 
        WHEN 'lul' THEN nm.LastUpdatedDatetime
     END) ASC,
    (CASE @SortType 
        WHEN 'az' THEN nm.Title  
     END) ASC,
    (CASE @SortType 
        WHEN 'za' THEN nm.Title 
     END) desc

---

由于您将

selectdistinct

和

orderby

与

Case

语句一起使用，因此需要将所有orderby列与Case语句一起包含到Select语句中

SELECT DISTINCT
    COUNT(*) OVER () AS Count,      
    nm.NoteID, nm.Title, 
    Description, CreatedDate, Createddatetime, 
    nm.BusinessID, CreatedUser, nm.LastUpdatedDatetime,
    Pinned DESC,
    (CASE @SortType
        WHEN 'lUf' THEN nm.LastUpdatedDatetime
     END) DESC,
    (CASE @SortType 
        WHEN 'lul' THEN nm.LastUpdatedDatetime
     END) ASC,
    (CASE @SortType 
        WHEN 'az' THEN nm.Title  
     END) ASC,
    (CASE @SortType 
        WHEN 'za' THEN nm.Title 
     END) desc
FROM
    PLO.NotesMaster nm with(nolock) 
LEFT JOIN
    PLO.NoteTags nt ON nm.NoteID = nt.NoteID
WHERE 
    (nm.Title LIKE '%'+@keyword+'%'  OR COALESCE(@keyword ,'')='')
    AND (nt.TagID = @TagID OR COALESCE(@TagID, '') = '')
    AND (nm.BusinessID = @BusinessID)
    AND (nm.CreatedUser = @UserID)
    AND (nm.Status != 2)
ORDER BY
    Pinned DESC,
    (CASE @SortType
        WHEN 'lUf' THEN nm.LastUpdatedDatetime
     END) DESC,
    (CASE @SortType 
        WHEN 'lul' THEN nm.LastUpdatedDatetime
     END) ASC,
    (CASE @SortType 
        WHEN 'az' THEN nm.Title  
     END) ASC,
    (CASE @SortType 
        WHEN 'za' THEN nm.Title 
     END) desc

或

不，你没有：

我在select中添加了order by列，然后出现了一个错误

例如，您尚未添加以下列：

CreatedUser BusinessID Description NoteID Createddatetime CreatedDate

---

您可以开始注释

选择中的列，以查看查询何时开始工作。
I仅对order by子句使用3列。即，LastUpdateDateTime和title。我添加了这3个columns@alenantony您需要添加所有列-SELECT语句中引用的所有列必须在
ORDER BY
子句中指定-只需将它们添加到当前列之后，它们不会造成任何伤害。
CreatedUser BusinessID Description NoteID Createddatetime CreatedDate