ストアドプロシージャ内のビューの変更

Question

ストアドプロシージャ内のビューを変更するにはどうすればよいですか？

create procedure createviewupdatepenaltypointsconsecutive 
as 
begin 
alter VIEW consecutive 
as 


WITH cte as (
    SELECT *, 
      LAG([pointsRewarded], 1) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev1_points, 
      LAG([pointsRewarded], 2) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev2_points, 
      LAG([pointsRewarded], 3) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev3_points 
    FROM week1 
) 
SELECT *, 
     CASE WHEN [pointsRewarded] = -10 AND prev1_points = -10 AND prev2_points = -10 AND prev3_points = -10 
      THEN -200 
      WHEN [pointsRewarded] = -10 AND prev1_points = -10 AND prev2_points = -10 
      THEN -100 
      WHEN [pointsRewarded] = -10 AND prev1_points = -10 
      THEN -50 
      ELSE 0 
     END penalty  
FROM cte 

end 

このエラーを取得してM： メッセージ156、レベル15、状態1、プロシージャcreateviewupdatepenaltypointsconsecutive、キーワード '表示' に近いライン4 正しくない構文。 メッセージ319、レベル15、状態1、プロシージャcreateviewupdatepenaltointsconsecutive、行8 'with'キーワードの構文が正しくありません。この文が共通テーブル式、xmlnamespaces句または変更追跡コンテキスト句である場合、前の文はセミコロンで終了する必要があります。

Answer 1

ストアドプロシージャのようなALTER VIEWステートメントを実行することはできません。

WITH cte as (
    SELECT *, 
     LAG([pointsRewarded], 1) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev1_points, 
     LAG([pointsRewarded], 2) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev2_points, 
     LAG([pointsRewarded], 3) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev3_points 
FROM week1) 
SELECT *, 
    CASE WHEN [pointsRewarded] = -10 AND prev1_points = -10 AND prev2_points = -10 AND prev3_points = -10 
     THEN -200 
     WHEN [pointsRewarded] = -10 AND prev1_points = -10 AND prev2_points = -10 
     THEN -100 
     WHEN [pointsRewarded] = -10 AND prev1_points = -10 
     THEN -50 
     ELSE 0 
    END penalty  
FROM cte 

（または、より良い、すべて終了開始：現在、あなたがそのようなセミコロンでCTEを開始する必要が表示されるエラーを修正するには

1）：だから、あなたは2つのアクションを実行する必要があり、あなたの問題を解決するために代わりにセミコロンを使用したSQL文は推奨されません）。

2）動的SQL文字列であなたのALTER VIEW文を変換し、それがバッチの最初の1でなければなりませんALTER VIEW文としてsp_executesqlを使用して実行します。

CREATE PROCEDURE createviewupdatepenaltypointsconsecutive 
AS 
BEGIN 
    DECLARE @STMT AS NVARCHAR(MAX) = 
    ' 
    ALTER VIEW consecutive 
    AS 


    WITH cte as (
     SELECT *, 
      LAG([pointsRewarded], 1) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev1_points, 
      LAG([pointsRewarded], 2) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev2_points, 
      LAG([pointsRewarded], 3) OVER (PARTITION BY [EmployeeID] ORDER BY [WeekNumber]) as prev3_points 
     FROM week1 
) 
    SELECT *, 
     CASE WHEN [pointsRewarded] = -10 AND prev1_points = -10 AND prev2_points = -10 AND prev3_points = -10 
       THEN -200 
       WHEN [pointsRewarded] = -10 AND prev1_points = -10 AND prev2_points = -10 
       THEN -100 
       WHEN [pointsRewarded] = -10 AND prev1_points = -10 
       THEN -50 
       ELSE 0 
     END penalty  
    FROM cte 
    ' 
    EXEC sp_executesql @STMT; 
END