Rename SQL Server Schema

Question

How can I rename a schema using SQL Server?

Answer 1

This is a short version but works well.

declare @sql varchar(8000), @table varchar(1000), @oldschema varchar(1000), @newschema   varchar(1000)

  set @oldschema = 'old'
  set @newschema = 'dbo'

 while exists(select * from sys.tables where schema_name(schema_id) = @oldschema)

  begin
      select @table = name from sys.tables 
      where object_id in(select min(object_id) from sys.tables where  schema_name(schema_id)  = @oldschema)

    set @sql = 'alter schema [' + @newschema + '] transfer [' + @oldschema + '].[' + @table + ']'

   exec(@sql)
 end

Answer 2

The stored procedure to rename the schema which has more tables in SQL server 2008

   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

Execute the procedure to rename the schema: examples:

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

Answer 3

Easiest solution that worked for me is:
I have just one schema dbo with two tables PopulationByCountrySTG and CountryRegionSTG

(1) I created a new schema by executing,

create schema stg

(2) I executed the following commands,

ALTER SCHEMA stg TRANSFER dbo.PopulationByCountrySTG;
ALTER SCHEMA stg TRANSFER dbo.CountryRegionSTG;

All done. Let me know if it works for you.. Thanks Guys.

Answer 4

You move individual objects from one schema to another via:

ALTER SCHEMA NewSchema TRANSFER OldSchema.Object;

Answer 5

I have combined both codes above and used cursors to not be limited by the size of the string variables, executing the commands individually. I assume you have already created the new schema and will drop the old one after certifying all is ok. It's safer... :)

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 6

For Procedures

USE DatabaseName

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

SET @OldSchema = 'ComputerLearn'
SET @NewSchema = 'Basic'

DECLARE @sql AS varchar(MAX)

SET @sql = 'CREATE SCHEMA [' + @NewSchema + ']' + CHAR(13) + CHAR(10)

SELECT @sql = @sql + 'ALTER SCHEMA [' + @NewSchema + '] TRANSFER [' + sys.schemas.name + '].[' + sys.procedures.name + ']'
     + CHAR(13) + CHAR(10)
FROM sys.procedures,sys.schemas
WHERE sys.procedures.schema_id=sys.schemas.schema_id and sys.schemas.name = @OldSchema

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

PRINT @sql
IF (0=1) EXEC (@sql)