Question

我们有一些包含大量视图，功能和程序的数据库。我们将更新其中一些。因此我写了这个脚本。我的问题是，这是一种常见的方式，并且是正确的方式吗？

任何建议都将受到赞赏。

--  update procedures and functions
USE mydb
GO
DECLARE @ticker nvarchar(255)
DECLARE @definition nvarchar(max)
DECLARE @newdefinition nvarchar(max)
DECLARE crsVorgang SCROLL CURSOR FOR
    SELECT ROUTINE_NAME,ROUTINE_DEFINITION FROM INFORMATION_SCHEMA.ROUTINES
    WHERE ROUTINE_CATALOG = 'mydb' and ROUTINE_DEFINITION like '%something%' 
    ORDER BY ROUTINE_NAME 

        OPEN crsVorgang
        FETCH FIRST FROM crsVorgang INTO @ticker, @definition

        WHILE (@@FETCH_STATUS <> -1)
        BEGIN

            set @newdefinition = REPLACE(@definition,'sometext', 'newtext')

            --print @newdefinition
            update INFORMATION_SCHEMA.ROUTINES
            set ROUTINE_DEFINITION = @newdefinition
            where ROUTINE_NAME = @ticker

        FETCH NEXT FROM crsVorgang INTO @ticker, @definition
        END
    CLOSE crsVorgang
    DEALLOCATE crsVorgang
GO

Answer 1

答案是，更新INFORMATION_SCHEMA.ROUTINES是不可能的，因为不允许这样做。

正确的方式（对我而言）来自许多程序和函数的可重现批量更新现在是一个drop和create，所以我已经将我的脚本修改为以下内容：

USE [mydb]
GO
DECLARE @ticker nvarchar(255)
DECLARE @definition nvarchar(max)
DECLARE @routinetype nvarchar(255)
DECLARE @newdefinition nvarchar(max)
DECLARE @dropdefinition nvarchar(max)
DECLARE crsVorgang SCROLL CURSOR FOR
    SELECT ROUTINE_NAME,ROUTINE_DEFINITION, ROUTINE_TYPE FROM INFORMATION_SCHEMA.ROUTINES
    WHERE ROUTINE_CATALOG = 'mydb' and ROUTINE_DEFINITION like '%something%' 
    ORDER BY ROUTINE_NAME 

        OPEN crsVorgang
        FETCH FIRST FROM crsVorgang INTO @ticker, @definition, @routinetype

        WHILE (@@FETCH_STATUS <> -1)
        BEGIN

            set @dropdefinition = 'DROP '+ @routinetype +' [dbo].'+@ticker
            set @newdefinition = REPLACE(@definition,'sometext', 'newtext')

            exec (@dropdefinition)
            exec (@newdefinition)

        FETCH NEXT FROM crsVorgang INTO @ticker, @definition, @routinetype
        END
    CLOSE crsVorgang
    DEALLOCATE crsVorgang
GO

感谢您花费的时间

mssql批量更新程序和功能

1 个答案: