Compare SQL permissions using SQL Server Data Tools

USE master
GO
CREATE DATABASE [_DemoDB]
GO 

USE [_DemoDB]
GO
CREATE PROCEDURE dbo.demo_p_1
AS 
SELECT 1 as Col
GO
CREATE PROCEDURE dbo.demo_p_2
AS 
SELECT 2 as Col
GO
CREATE VIEW dbo.demo_v_1
AS 
SELECT 1 as Col
GO

USE [master]
GO
CREATE LOGIN [_demo_login] WITH PASSWORD=N'T3stL0g!n', DEFAULT_DATABASE=[master], 
CHECK_EXPIRATION=ON, CHECK_POLICY=ON
GO
ALTER SERVER ROLE [bulkadmin] ADD MEMBER [_demo_login]
GO

USE [_DemoDB]
GO
CREATE ROLE [_demo_role]
GO
ALTER ROLE [db_datareader] ADD MEMBER [_demo_role]
GO
CREATE USER [_demo_user] FOR LOGIN [_demo_login] WITH DEFAULT_SCHEMA=[dbo]
GO
ALTER ROLE [_demo_role] ADD MEMBER [_demo_user]
GO

/*
Deployment script for _DemoDB

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/
GO
SET ANSI_NULLS, ANSI_PADDING, ANSI_WARNINGS, ARITHABORT, 
	CONCAT_NULL_YIELDS_NULL, QUOTED_IDENTIFIER ON;
SET NUMERIC_ROUNDABORT OFF;
GO
:setvar DatabaseName "_DemoDB"
:setvar DefaultFilePrefix "_DemoDB"
:setvar DefaultDataPath "X:\MSSQL\DATA\"
:setvar DefaultLogPath "Y:\MSSQL\TLOGS\"
GO
:on error exit
GO
/*
Detect SQLCMD mode and disable script execution if SQLCMD mode is not supported.
To re-enable the script after enabling SQLCMD mode, execute the following:
SET NOEXEC OFF; 
*/
:setvar __IsSqlCmdEnabled "True"
GO
IF N'$(__IsSqlCmdEnabled)' NOT LIKE N'True'
    BEGIN
        PRINT N'SQLCMD mode must be enabled to successfully execute this script.';
        SET NOEXEC ON;
    END
GO
USE [$(DatabaseName)];
GO
PRINT N'Creating [_demo_login]...';
GO
CREATE LOGIN [_demo_login]
    WITH PASSWORD = N'yxXvugfdu3UapzMmmXu2zo', SID = 0x4C06BCA98BD2094998B52518941AAB53, 
    DEFAULT_LANGUAGE = [us_english], CHECK_EXPIRATION = ON;
GO
PRINT N'Creating [_demo_user]...';
GO
CREATE USER [_demo_user] FOR LOGIN [_demo_login];
GO
PRINT N'Creating [_demo_role]...';
GO
CREATE ROLE [_demo_role]    AUTHORIZATION [dbo];
GO
PRINT N'Creating ...';
GO
EXECUTE sp_addrolemember @rolename = N'_demo_role', @membername = N'_demo_user';
GO
PRINT N'Creating ...';
GO
EXECUTE sp_addrolemember @rolename = N'db_datareader', @membername = N'_demo_role';
GO
PRINT N'Creating ...';
GO
ALTER SERVER ROLE [bulkadmin] ADD MEMBER [_demo_login];
GO

USE [_DemoDB]
GO
GRANT EXECUTE ON [dbo].[demo_p_1] TO [_demo_role]
GO
GRANT SELECT ON [dbo].[demo_v_1] TO [_demo_role]
GO
-- database level permissions
GRANT VIEW DEFINITION TO [_demo_user]
GO
-- server level permissions
use master
GO
GRANT VIEW ANY DEFINITION TO [_demo_login]
GO

/*
Deployment script for _DemoDB

This code was generated by a tool.
Changes to this file may cause incorrect behavior and will be lost if
the code is regenerated.
*/
GO
SET ANSI_NULLS, ANSI_PADDING, ANSI_WARNINGS, ARITHABORT, 
	CONCAT_NULL_YIELDS_NULL, QUOTED_IDENTIFIER ON;
SET NUMERIC_ROUNDABORT OFF;
GO
:setvar DatabaseName "_DemoDB"
:setvar DefaultFilePrefix "_DemoDB"
:setvar DefaultDataPath "X:\MSSQL\DATA\"
:setvar DefaultLogPath "Y:\MSSQL\TLOGS\"
GO
:on error exit
GO
/*
Detect SQLCMD mode and disable script execution if SQLCMD mode is not supported.
To re-enable the script after enabling SQLCMD mode, execute the following:
SET NOEXEC OFF; 
*/
:setvar __IsSqlCmdEnabled "True"
GO
IF N'$(__IsSqlCmdEnabled)' NOT LIKE N'True'
    BEGIN
        PRINT N'SQLCMD mode must be enabled to successfully execute this script.';
        SET NOEXEC ON;
    END
GO
USE [$(DatabaseName)];
GO
PRINT N'Creating Permission...';
GO
GRANT VIEW DEFINITION TO [_demo_user];
GO
PRINT N'Creating Permission...';
GO
GRANT EXECUTE ON OBJECT::[dbo].[demo_p_1] TO [_demo_role] AS [dbo];
GO
PRINT N'Creating Permission...';
GO
GRANT SELECT ON OBJECT::[dbo].[demo_v_1] TO [_demo_role] AS [dbo];
GO
PRINT N'Update complete.';
GO

SELECT l.name, pr.permission_name, pr.state_desc 
	FROM sys.server_principals l JOIN sys.server_permissions pr
		ON l.principal_id = pr.grantee_principal_id