How to use database name dynamically in SQL Server

Question

I need to get all table names in SQL Server. To do this I use this code:

select TABLE_NAME  
from INFORMATION_SCHEMA.TABLES

I need use dynamic

Answer 1

DECLARE @sql varchar(max)
Declare @dbName varchar(50)='Learn'
SET @sql='
use '+@dbname+'
go

select TABLE_NAME  
from INFORMATION_SCHEMA.TABLES'
exec (@sql)