What is the T-SQL To grant read and write access to tables in a database in SQL Server?

Question

What is the exact SQL to assign db_datareader and db_datawriter roles to a user in SQL Server?

The user name is MYUSER and the

Answer 1

It will be better to Create a New role, then grant execute, select ... etc permissions to this role and finally assign users to this role.

Create role

CREATE ROLE [db_SomeExecutor] 
GO

Grant Permission to this role

GRANT EXECUTE TO db_SomeExecutor
GRANT INSERT  TO db_SomeExecutor

to Add users database>security> > roles > databaseroles>Properties > Add ( bottom right ) you can search AD users and add then

OR

   EXEC sp_addrolemember 'db_SomeExecutor', 'domainName\UserName'

Please refer this post