T-SQL查詢以檢查相關列是否為真，並更新另一個表列

Question

我有這2個表SupplierOrder和SupplierOrderDetails，它們由SupplierOrder PK鏈接。 現在，我在SupplierOrder表中擁有一個名為isComplete的列，一旦該SupplierORderDetails表的isComplete中的所有值對於該SupplierOrder ID都為true時，我希望將其更新為true。 請參閱表格附件。 我已經嘗試過使用此查詢，但我認為這可能是一種更好的方法，或更有效。

SELECT 1 
    FROM supplierOrder so
    inner JOIN supplierOrderdetails sod 
      ON so.id = sod.supplierOrderID
   WHERE so.id = 1
     AND sod.isComplete= 1 

Answer 1

這應該可以工作，我可能沒有正確的表名，但是如果您更改它就應該可以工作

UPDATE suplierorder 
SET    iscomplete = 'true' 
WHERE  id IN (SELECT suplierorderid 
              FROM   (SELECT suplierorderid, 
--case statement to set to 0 if complete and 1 if not complete (i.e any other value null or false)
                             Sum(CASE 
                                   WHEN iscomplete = 'true' THEN 0 
                                   ELSE 1 
                                 END) AS complete 
                      FROM   suplierorderdetails 
                      --make sure we only update the new ones and makes sure that your select records are limited to Just not complete records, so if your tables grow this will make your update statement doesn't take a lot of time
                      WHERE  suplierorderid IN (SELECT id 
                                                FROM   suplierorder 
                                                WHERE  iscomplete IS NULL) 
--I am grouping on suplierorderid so that we can add all the iscomplete status of each  suplierorderid column
                      GROUP  BY suplierorderid) A 
--now that the inner query outputs suplierorderid and complete status which will be 0 if everything is complete we are writing below condition
              WHERE  complete = 0) 

Answer 2

我們需要的是找到supplierOrderID其中MIN(isComplete)=1 。 所以這意味着ALL isComplete=TRUE

UPDATE supplierOrder SET isComplete=1
WHERE id in
(
  SELECT supplierOrderID
  FROM supplierOrderdetails 
  GROUP BY supplierOrderID
  HAVING MIN(CAST(isComplete as Int))=1
)
AND 
(
 (isComplete is NULL ) OR (isComplete = 0) 
) 

SQLFiddle演示

PS：由於isComplete是BIT類型的字段，因此不能使用MIN(isComplete)但可以使用MIN(CAST(isComplete as Int))