sql server - Why can't I use "create schema" in a begin/end block in SQL Management Studio?

Question

I generated a script which creates all users and schemas for this database and when I wrap the CREATE statements with an IF EXISTS check I find that it does not allow the CREATE SCHEMA call to run in the BEGIN/END block. It complains that it is invalid syntax. Yet I can run the command on it's own. A sample of the code is below. I am using SQL Server 2008 and Management Studio R2. Why is this invalid syntax?

--DROP SCHEMA [acme]

IF (NOT EXISTS (SELECT * FROM sys.schemas WHERE name = 'acme')) 
BEGIN
    CREATE SCHEMA [acme] AUTHORIZATION [dbo]
END

Answer 1

Schema creations must be the only statement in a batch. One way to get around it is like so:

IF (NOT EXISTS (SELECT * FROM sys.schemas WHERE name = 'acme')) 
BEGIN
    EXEC ('CREATE SCHEMA [acme] AUTHORIZATION [dbo]')
END