重命名SQL Server架构

Question

如何使用SQL Server重命名架构？

Answer 1

如果模式中有大量对象,您可以使用类似的东西自动生成所有更改(它只执行表和视图,因此在运行之前,您可能需要将其扩展为SP,UDF等.)

USE SandBox

DECLARE @OldSchema AS varchar(255)
DECLARE @NewSchema AS varchar(255)
DECLARE @newLine AS varchar(2) = CHAR(13) + CHAR(10)

SET @OldSchema = 'dbo'
SET @NewSchema = 'StackOverflow'

DECLARE @sql AS varchar(MAX)

SET @sql = 'CREATE SCHEMA [' + @NewSchema + ']' + @newLine
SELECT @sql = @sql + 'GO' + @newLine
SELECT @sql = @sql + 'ALTER SCHEMA [' + @NewSchema + '] TRANSFER [' + TABLE_SCHEMA + '].[' + TABLE_NAME + ']'
     + @newLine
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_SCHEMA = @OldSchema

SET @sql = @sql + 'DROP SCHEMA [' + @OldSchema + ']'

PRINT @sql -- NOTE PRINT HAS AN 8000 byte limit - 8000 varchar/4000 nvarchar - see comments
IF (0=1) EXEC (@sql)

Answer 2

您可以通过以下方式将单个对象从一个模式移动到

ALTER SCHEMA NewSchema TRANSFER OldSchema.Object;

Answer 3

我将上面的两个代码组合在一起并使用了游标,不受字符串变量大小的限制,单独执行命令.我假设您已经创建了新架构,并且在证明一切正常后将删除旧架构.它更安全...... :)

DECLARE @OldSchema AS varchar(255)
DECLARE @NewSchema AS varchar(255)

SET @OldSchema = 'dbo'
SET @NewSchema = 'StackOverflow'

DECLARE @sql AS varchar(MAX)

DECLARE @Schema AS varchar(MAX)
DECLARE @Obj AS varchar(MAX)

-- First transfer Tables and Views

DECLARE CU_OBJS CURSOR FOR
    SELECT TABLE_SCHEMA, TABLE_NAME
    FROM INFORMATION_SCHEMA.TABLES
    WHERE TABLE_SCHEMA = @OldSchema

OPEN CU_OBJS

FETCH NEXT FROM CU_OBJS
INTO @Schema, @Obj

WHILE @@FETCH_STATUS = 0
BEGIN
    SELECT @sql = 'ALTER SCHEMA [' + @NewSchema + '] TRANSFER [' + @OldSchema + '].[' + @Obj + ']'
    PRINT @sql
--  EXEC (@sql)

    FETCH NEXT FROM CU_OBJS
    INTO @Schema, @Obj
END

CLOSE CU_OBJS
DEALLOCATE CU_OBJS


-- Now transfer Stored Procedures

DECLARE CU_OBJS CURSOR FOR
    SELECT sys.schemas.name, sys.procedures.name
    FROM sys.procedures,sys.schemas
    WHERE sys.procedures.schema_id=sys.schemas.schema_id and sys.schemas.name = @OldSchema

OPEN CU_OBJS

FETCH NEXT FROM CU_OBJS
INTO @Schema, @Obj

WHILE @@FETCH_STATUS = 0
BEGIN
    SELECT @sql = 'ALTER SCHEMA [' + @NewSchema + '] TRANSFER [' + @Schema + '].[' + @Obj + ']'
    PRINT @sql
--  EXEC (@sql)

    FETCH NEXT FROM CU_OBJS
    INTO @Schema, @Obj
END

CLOSE CU_OBJS
DEALLOCATE CU_OBJS

Answer 4

存储过程重命名在SQL Server 2008中具有更多表的架构

   IF OBJECT_ID ( 'dbo.RenameSchema', 'P' ) IS NOT NULL 
    DROP PROCEDURE dbo.RenameSchema;
   GO                         

CREATE PROCEDURE dbo.RenameSchema               

 @OLDNAME  varchar(500),
@NEWNAME  varchar(500)

AS            
     /*check for oldschema exist or not */
     IF NOT EXISTS (SELECT 1 FROM sys.schemas WHERE name =  @OLDNAME)

        BEGIN

            RETURN

        END

       /* Create the schema with new name */
      IF NOT EXISTS (SELECT 1 FROM sys.schemas WHERE name = @NEWNAME)

      BEGIN

          EXECUTE( 'CREATE SCHEMA ' + @NEWNAME );

       END                

     /* get the object under the old schema and transfer those objects to new schema */
     DECLARE Schema_Cursor CURSOR FOR

    SELECT ' ALTER SCHEMA ' + @NEWNAME + ' TRANSFER '+ SCHEMA_NAME(SCHEMA_ID)+'.'+ name  
    as ALTSQL from sys.objects WHERE type IN ('U','V','P','Fn') AND 
    SCHEMA_NAME(SCHEMA_ID) = @OLDNAME;

   OPEN Schema_Cursor;          

  DECLARE @SQL varchar(500)         

   FETCH NEXT FROM Schema_Cursor INTO @SQL;

   WHILE @@FETCH_STATUS = 0
    BEGIN
    exec (@SQL) 
    FETCH NEXT FROM Schema_Cursor INTO @SQL;
   END;

   CLOSE Schema_Cursor;

   DEALLOCATE Schema_Cursor;

   /* drop the old schema which should be the user schema */
   IF @OLDNAME <> 'dbo' and  @OLDNAME <> 'guest'
   BEGIN
    EXECUTE ('DROP SCHEMA ' + @OLDNAME) 
    END
   GO

执行以下过程以重命名架构：示例：

    EXECUTE RenameSchema 'oldname','newname'
    EXECUTE RenameSchema 'dbo','guest'