我的SQL查詢的哪部分是錯誤的？ SQL Server數據庫實體

Question

部分是：

• 表格（ID，計數器）
• 組（ID，Form_Id，計數器）
• 字段（ID，分組ID，計數器）

這種結構的邏輯是：

• 字段計數器可以是0或更高
• 組計數器取決於該組中存在的字段的計數器：每個字段的計數器值大於0將組計數器遞增1
• 組與表格之間存在相同的關係：form的計數器是該集團的計數器以高於0

最佳理解一個小例子：

Form A1 (Counter: 1) 
|-> Group BB1 (Counter: 2) 
    |-> Field CCC1 (Counter: 2) 
    |-> Field CCC2 (Counter: 1) 
|-> Group BB2 (Counter: 0) 
    |-> Field CCC3 (Counter: 0) 
    |-> Field CCC4 (Counter: 0) 
Form A2 
... 

某些字段包含我的查詢需要檢查無效值。但我無法用正確的方式寫出來。它的最新版本：

select distinct 
     cd.Id as [FormID], 
     sum (case when cd.Counter > 0 then 1 else 0 end) over (partition by cd.Id, gd.Id, fd.Id) as [FormSum], 
     cd.Counter as [FormVal], 

     gd.Id as [GroupID], 
     sum(case when gd.Counter > 0 then 1 else 0 end) over (partition by cd.Id, gd.Id, fd.Id) as [GroupSum], 
     gd.Counter as [GroupVal], 

     fd.Id as [FieldID], 
     --sum(case when fd.Counter > 0 then 1 else 0 end) over (partition by cd.Id, gd.Id) as [FieldSum], 
     fd.Counter as [FieldVal] 
    from FieldDatas fd 
    inner join GroupDatas gd on fd.GroupData_Id = gd.Id 
    inner join CrfDatas cd on gd.CrfData_Id = cd.Id 
    where cd.Id in 
    (
     -- some subquery 
    ) 
    order by cd.Id, gd.Id, fd.Id 

更新：
此查詢需要保存計數器的數據與查詢的計算值的所有實體比較，並在今後的修復這些值。

會很樂意爲您提供幫助。

Answer 1

您無法使用單個查詢更新兩個表的內容，因此我們最終得到兩個UPDATE語句。接下來，在「上」之前修正「下」關係（組/字段）。步驟我把：

首先設置測試結構和數據：

-- Set up test tables 
CREATE TABLE Forms 
(Id int not null 
,Counter int not null) 

CREATE TABLE Groups 
(Id int not null 
,Form_id int not null 
,Counter int not null) 

CREATE TABLE Fields 
(Id int not null 
,Group_Id int not null 
,Counter int not null) 


-- Set up valid test data 
DELETE Forms DELETE Groups DELETE Fields 
INSERT Forms values 
    (1,1) 
INSERT Groups values 
    (1,1,2) 
,(2,1,0) 
INSERT Fields values 
    (1,1,2) 
,(2,1,1) 
,(3,2,0) 
,(4,2,0) 


-- Set invalid Forms counter 
DELETE Forms DELETE Groups DELETE Fields 
INSERT Forms values 
    (1,2) 
INSERT Groups values 
    (1,1,2) 
,(2,1,0) 
INSERT Fields values 
    (1,1,2) 
,(2,1,1) 
,(3,2,0) 
,(4,2,0) 


-- Set invalid Groups counter (both) 
DELETE Forms DELETE Groups DELETE Fields 
INSERT Forms values 
    (1,2) 
INSERT Groups values 
    (1,1,0) 
,(2,1,1) 
INSERT Fields values 
    (1,1,2) 
,(2,1,1) 
,(3,2,0) 
,(4,2,0) 


-- Mondo invalid 
DELETE Forms DELETE Groups DELETE Fields 
INSERT Forms values 
    (1,0) 
INSERT Groups values 
    (1,1,0) 
,(2,1,1) 
INSERT Fields values 
    (1,1,2) 
,(2,1,1) 
,(3,2,0) 
,(4,2,0) 

接下來，在「低」設置識別壞數據：

-- Detect bad data in Groups/Fields relationship 
SELECT 
    gr.Id 
    ,gr.Counter 
    ,sum(case when fi.Counter <> 0 then 1 else 0 end) CalcValue 
from Groups gr 
    left outer join Fields fi 
    on fi.Group_Id = gr.Id 
group by 
    gr.Id 
    ,gr.Counter 
having sum(case when fi.Counter <> 0 then 1 else 0 end) <> gr.Counter 

使用，作爲在更新的子查詢聲明：

-- Reset invalid Forms counters 
UPDATE Groups 
set Counter = xx.CalcValue 
from Groups gr 
    inner join (-- Detect bad data in Groups/Fields relationship 
       select 
       gr.Id 
       ,gr.Counter 
       ,sum(case when fi.Counter <> 0 then 1 else 0 end) CalcValue 
       from Groups gr 
       left outer join Fields fi 
       on fi.Group_Id = gr.Id 
       group by 
       gr.Id 
       ,gr.Counter 
       having sum(case when fi.Counter <> 0 then 1 else 0 end) <> gr.Counter) xx 
    on xx.Id = gr.Id 

剪切，粘貼，重命名爲「上」集：

-- Detect bad data in Forms/Groups relationship 
SELECT 
    fo.Id 
    ,fo.Counter 
    ,sum(case when gr.Counter <> 0 then 1 else 0 end) CalcValue 
from Forms fo 
    left outer join Groups gr 
    on gr.Form_Id = fo.Id 
group by 
    fo.Id 
    ,fo.Counter 
having sum(case when gr.Counter <> 0 then 1 else 0 end) <> fo.Counter 


-- Reset invalid Forms counters 
UPDATE Forms 
set Counter = xx.CalcValue 
from Forms fo 
    inner join (-- Detect bad data in Forms/Groups relationship 
       select 
       fo.Id 
       ,fo.Counter 
       ,sum(case when gr.Counter <> 0 then 1 else 0 end) CalcValue 
       from Forms fo 
       left outer join Groups gr 
       on gr.Form_Id = fo.Id 
       group by 
       fo.Id 
       ,fo.Counter 
       having sum(case when gr.Counter <> 0 then 1 else 0 end) <> fo.Counter) xx 
    on xx.Id = fo.Id 

只運行的順序更新和檢查結果：

SELECT * from Forms 
SELECT * from Groups 
SELECT * from Fields 

假設：數據是乾淨的，如描述的那樣，指標設置是否正確，如果表很大，沒有其他意外的差異來向上。