How to check if a database exists in SQL Server?

Question

What is the ideal way to check if a database exists on a SQL Server using TSQL? It seems multiple approaches to implement this.

Answer 1

TRY THIS

IF EXISTS 
   (
     SELECT name FROM master.dbo.sysdatabases 
    WHERE name = N'New_Database'
    )
BEGIN
    SELECT 'Database Name already Exist' AS Message
END
ELSE
BEGIN
    CREATE DATABASE [New_Database]
    SELECT 'New Database is Created'
END