"If not exists" using OBJECT_ID() doesn't work for views and triggers. why? For tables I can implement "if not exists" and "if exists" as folows:

--if table exists - drop
If OBJECT_ID('A','U') is not null
Drop Table [A]
--if table not exists - Create
If OBJECT_ID('A','U') is null
Create Table A([key] varchar(20), [value] varchar(max))


but it is not quite working the same on views and triggers

I can do:

-- if exists - drop
If OBJECT_ID('VA','V') is not null
Drop view [VA]


but when I'm trying the oposite:

-- if not exists - create
If OBJECT_ID('VA','V') is null
Create view [VA] as Select * from [A] 


I'm Getting the following error:


  Incorrect syntax near the keyword 'view'


And the same is with triggers. when I do:

-- if not exists - create
If OBJECT_ID('Trigger_A_ins','TR') is null
Create trigger [Trigger_A_ins] On [A] instead of insert As 
   insert into A select * from inserted


I'm getting error:


  Incorrect syntax near the keyword 'trigger'


But:

-- if exists - drop
If OBJECT_ID('Trigger_A_ins','TR') is not null
Drop Trigger Trigger_A_ins


is working.

Did I missed anything?

Can anyone explain this difference between tables to triggers and views?

Note: I'm using sql server 2012
Referencing the documentation from CREATE VIEW under REMARKS:


  The CREATE VIEW must be the first statement in a query batch.


Referencing the documentation from CREATE TRIGGER


  CREATE TRIGGER must be the first statement in the batch and can apply
  to only one table.


For VIEWS and TRIGGERS, I think you'll have to check for the existence of the object and drop in one batch and create them in another batch separated by a GO

Example:

IF EXISTS (SELECT * FROM sys.objects WHERE [name] = '[dbo].[trg]' AND [type] = 'TR')
      DROP TRIGGER [dbo].[trg] ON [dbo].[tbl]
GO
CREATE TRIGGER [dbo].[trg] ON [dbo].[tbl] 
AFTER DELETE
AS
BEGIN
   //
END
GO