Specifies the database with which you want to work.
use database_name
is the name of the database to open.
use pubs2 go
The current database is now pubs2.
The use command must be executed before you can reference objects in a database.
use cannot be included in a stored procedure or a trigger.
sp_addalias adds an alias, which permits a user to use a database under another name to gain access to that database.
ANSI SQL – Compliance level: Transact-SQL extension.
If the database has a “guest” account, all users can use the database. If the database does not have a “guest” account, you must be a valid user in the database, have an alias in the database, or be a System Administrator or System Security Officer.
Commands create database, drop database
System procedures sp_addalias, sp_adduser, sp_modifylogin
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