使用 CTE 的存储过程无法创建

Question

我测试了这个查询，该查询是在另一个线程的帮助下构建的，它工作得很好，将它移到一个存储过程中，我需要向它提供一个参数（EID 的值）。因此，我对完美测试的查询所做的唯一更改是在顶部和底部添加 @param1 参数，并在顶部添加创建过程行。

我无法保存它，因为它在第 4 行和 'n' 声明中窒息 - SQL80001：'n' 不是一个可识别的选项。

要达到这一点，还有很长的路要走。有人可以帮我推过终点吗？

CREATE PROCEDURE [dbo].[UpdateSubIdx]
@param1 varchar(30) 

WITH n AS 
(
SELECT  DID AS DID,
        sub_idx AS current_id,
        ROW_NUMBER() OVER (PARTITION BY EID ORDER BY alt_sub_idx) AS new_id
FROM    GETT_Documents 
)
--SELECT * FROM N
UPDATE  GETT_Documents
        SET sub_idx = n.new_id
FROM    GETT_Documents  G
JOIN    n ON N.DID = G.DID
WHERE   EID = 'AC-1.1.i';

---Repeat for the alt sub idx column renumberation
WITH n AS 
(
SELECT  DID AS DID,
        alt_sub_idx AS current_id,  
ROW_NUMBER() OVER (PARTITION BY EID ORDER BY sub_idx)*10 AS new_id
  FROM    GETT_Documents 
 )

UPDATE  GETT_Documents
        SET alt_sub_idx = n.new_id
FROM    GETT_Documents  G
JOIN    n ON N.DID = G.DID
WHERE   EID = @param1;

问候， 肯...

Answer 1

您需要在 WITH 关键字之前加上一个分号 (;) 以终止前一个语句。

公用表表达式必须以 ; 开头 - 可以在此处阅读更多信息：Why should a CTE start with a semi-colon?

您还需要使用AS BEGIN ... END 来标记过程的主体。以下是应该起作用的更改：

CREATE PROCEDURE [dbo].[UpdateSubIdx] @param1 varchar(30) 
As Begin

    ;WITH n AS 
    (
    SELECT  DID AS DID,
            sub_idx AS current_id,
            ROW_NUMBER() OVER (PARTITION BY EID ORDER BY alt_sub_idx) AS new_id
    FROM    GETT_Documents 
    )
    --SELECT * FROM N
    UPDATE  GETT_Documents
            SET sub_idx = n.new_id
    FROM    GETT_Documents  G
    JOIN    n ON N.DID = G.DID
    WHERE   EID = 'AC-1.1.i';

    ---Repeat for the alt sub idx column renumberation
    ;WITH n AS 
    (
    SELECT  DID AS DID,
            alt_sub_idx AS current_id,  
    ROW_NUMBER() OVER (PARTITION BY EID ORDER BY sub_idx)*10 AS new_id
      FROM    GETT_Documents 
     )

    UPDATE  GETT_Documents
            SET alt_sub_idx = n.new_id
    FROM    GETT_Documents  G
    JOIN    n ON N.DID = G.DID
    WHERE   EID = @param1;
End