更新列具有一定價值列值具有相同的ID

Question

我的表：

ID | Number 
------------------- 
| 1 | 0x 
| 1 | 12345678 
| 1 | 12345678 
| 2 | 0x 
| 2 | 0x 
| 2 | 242424 
| 3 | 88888 
| 3 | 88888 
| 4 | 0x 
| 4 | 0x 

表必須更新，讓每一位「0X」將更新到正確的「數字」，如果存在一個。

結果所需要的：

ID | Number 
------------------- 
| 1 | 12345678  <-- Updated 
| 1 | 12345678 
| 1 | 12345678 
| 2 | 242424  <-- Updated 
| 2 | 242424  <-- Updated 
| 2 | 242424 
| 3 | 88888   <- No change on id = 3 
| 3 | 88888   <- No change on id = 3 
| 4 | 0x   <- No change because there's no relevant 'Number' to update 
| 4 | 0x   <- No change because there's no relevant 'Number' to update 

Answer 1

Demo of the following query

;WITH CTE AS (
    SELECT Id, Max(number) Number 
    FROM YourTable 
    WHERE Number <> '0x' 
    GROUP BY Id 
) 
UPDATE ut SET Number = c.Number 
FROM YourTable ut 
    JOIN CTE c ON ut.Id = c.Id 
WHERE ut.Number = '0x'