[推薦] (SqlServer)分離所有用戶數據庫

本文轉載自查看原文 2012-01-16 14:28 2786 SQL SERVER/ SqlServer

[推薦](SqlServer)分離所有用戶數據庫

——通過知識共享樹立個人品牌。

在實際應用中，有時我們需要一次性分離所有用戶數據庫，下面給出代碼，供大家參考。

USE [ master ]
GO
IF EXISTS ( SELECT *
FROM sys.objects
WHERE [ object_id ] = OBJECT_ID(N ' [dbo].[spDetachAllUserDatabases] ')
AND type IN ( N ' P ', N ' PC ' ) )
DROP PROCEDURE [ dbo ]. [ spDetachAllUserDatabases ]
GO

CREATE PROCEDURE [ dbo ]. [ spDetachAllUserDatabases ]
AS
BEGIN
      -- Declare Variables
      DECLARE @DatabaseName VARCHAR( 100)
      DECLARE @MinDatabaseID INT
      DECLARE @MaxDatabaseID INT
      DECLARE @SQL VARCHAR( 4000)
      -- Check for temporary table and drop it if it exists
      IF OBJECT_ID( ' tempDB.dbo.#Database ') IS NOT NULL
      DROP TABLE [ #Database ];

      -- Create temporary table
      CREATE TABLE # Database
     (
     ID INT IDENTITY( 1, 1),
     DatabaseName VARCHAR( 100)
     )

      -- Check for existing user databases
      IF EXISTS ( SELECT name
      FROM sys.databases
      WHERE database_id > 4
      AND name NOT IN ( ' SQLDBA ', ' ReportServer ',
      ' ReportServerTempDB ',
      ' distribution ' ) )
      BEGIN
          -- Insert all database names into a temporary table
          INSERT INTO # Database ( DatabaseName )
          SELECT name
          FROM sys.databases
          WHERE database_id > 4
          AND name NOT IN ( ' SQLDBA ', ' ReportServer ',
          ' ReportServerTempDB ',
          ' distribution ' )

          -- Set Variables for the detach database loop
          SELECT @MinDatabaseID = MIN(ID),
          @MaxDatabaseID = MAX(ID)
          FROM # Database

          -- Begin loop to detach databases
          WHILE @MinDatabaseID <= @MaxDatabaseID
          BEGIN

          -- Get DatabaseName
          SELECT @DatabaseName = DatabaseName
          FROM # Database
          WHERE ID = @MinDatabaseID

          -- Build Detach Database Command
          SET @SQL = ' EXEC sp_detach_db ' + '''' + @DatabaseName
          + '''' + ' ; '

          -- Try Catch block to execute SQL and handle errors
          BEGIN TRY

          -- Detach Database
          EXEC ( @SQL
         )
          PRINT ' Detached ' + @DatabaseName
          END TRY
          BEGIN CATCH
          SELECT @DatabaseName,
         message_id,
         severity,
          [ text ],
          @SQL
          FROM sys.messages
          WHERE message_id = @@ERROR
          AND language_id = 1033 -- British English
          END CATCH

          -- Get the next DatabaseName ID
          SET @MinDatabaseID = @MinDatabaseID + 1

          -- End Loop
          END
      END
END

GO

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