In this post, I am sharing one T-SQL script to change the schema name of all the tables in a SQL Server Database.

When you require to alter your database schema name and you have a large number of tables, you can use this kind of script to alter the schema name.

First, you need to create one new schema and you can replace [New_Schema_Name] by your newly created schema name. You can also add a table filter in the cursor main query.

USE [DB_NAME]
GO

DECLARE @TABNAME VARCHAR(255)
DECLARE @SQLCMD VARCHAR(500)
DECLARE CHANGESCHEMA CURSOR

FOR SELECT TABNAME FROM (SELECT '['+B.NAME+'].['+A.NAME+']' TABNAME FROM SYS.TABLES A
	INNER JOIN SYS.SCHEMAS B ON A.SCHEMA_ID= B.SCHEMA_ID) T
OPEN CHANGESCHEMA
FETCH NEXT FROM CHANGESCHEMA INTO @TABNAME
	WHILE @@FETCH_STATUS = 0	
	BEGIN
		SET @SQLCMD= 'ALTER SCHEMA [New_Schema_Name] TRANSFER '+@TABNAME
		PRINT @SQLCMD
	EXEC(@SQLCMD)
FETCH NEXT FROM CHANGESCHEMA INTO @TABNAME
END
CLOSE CHANGESCHEMA
DEALLOCATE CHANGESCHEMA
GO