Sql 使用列中的现有值更新列中的null

通过下面的示例，我如何使用现有值（例如：

9007853627

）更新

ORIGINAL\u ORDER\u NO

空值，以及如何使用等效的

ORDER\u line\u NO

更新

ORIGINAL\u ORDER\u NO

编号

我将传递

订单号

，脚本需要更新其余部分

ORIGINAL_ORDER_NO   original_order_line_no  ORDER_NO    ORDER_LINE_NO   
---------------------------------------------------------------------
9007853627             1                    9008142190   1              
9007853627             2                    9008142190   2  
NULL                  NULL                  9008142190   4   
NULL                  NULL                  9008142190   5  

期望输出：

 ORIGINAL_ORDER_NO  original_order_line_no  ORDER_NO    ORDER_LINE_NO   
-----------------------------------------------------------------------
    9007853627             1                9008142190   1              
    9007853627             2                9008142190   2  
    9007853627             4                9008142190   4   
    9007853627             5                9008142190   5  

---

ISNULL

是一种方式，@yourParam这里是您传递的订单号

update yourTable
set   original_order_line_no   = isnull(original_order_line_no,ORDER_LINE_NO)
     ,ORIGINAL_ORDER_NO   = (select top 1 ORIGINAL_ORDER_NO from yourTable where ORDER_NO = @yourParam)  
where ORDER_NO = @yourParam and ORIGINAL_ORDER_NO is null

---

ISNULL

是一种方式，@yourParam这里是您传递的订单号

update yourTable
set   original_order_line_no   = isnull(original_order_line_no,ORDER_LINE_NO)
     ,ORIGINAL_ORDER_NO   = (select top 1 ORIGINAL_ORDER_NO from yourTable where ORDER_NO = @yourParam)  
where ORDER_NO = @yourParam and ORIGINAL_ORDER_NO is null

您可以使用：

WITH cte AS (
  SELECT *, MIN(ORIGINAL_ORDER_NO) OVER(PARTITION BY ORDER_NO) as s
  FROM tab
  WHERE order_no = ?
)
UPDATE cte
SET ORIGINAL_ORDER_NO = s
   ,original_order_line_no = ORDER_LINE_NO  
WHERE ORIGINAL_ORDER_NO IS NULL;

您可以使用：

WITH cte AS (
  SELECT *, MIN(ORIGINAL_ORDER_NO) OVER(PARTITION BY ORDER_NO) as s
  FROM tab
  WHERE order_no = ?
)
UPDATE cte
SET ORIGINAL_ORDER_NO = s
   ,original_order_line_no = ORDER_LINE_NO  
WHERE ORIGINAL_ORDER_NO IS NULL;

---

9007853627

！=<代码>9008142190

9007853627

！=

9008142190

我在哪里可以查看订单号？@James123你试过吗？。。如果你看到这个，我不想更新所有订单。我想更新特定的顺序。@James123只需添加where子句，我可以在哪里使用

order\u NO

？@James123您尝试过吗？。。如果你看到这个，我不想更新所有订单。我想更新特定的顺序。@James123只需添加where子句即可