Exit and rollback everything in script on error

Question

I have a TSQL script that does a lot of database structure adjustments but it\'s not really safe to just let it go through when something fails.

to make things clear:

Answer 1

I didn't use the raiseerror solution, because it failed as I didn't have admin permissions. I extended the noexec on/off solution with the transaction handling as follows:

set noexec off

begin transaction
go


go
if @@error != 0 set noexec on;


go
if @@error != 0 set noexec on;

<... etc>

declare @finished bit;
set @finished = 1;

SET noexec off;

IF @finished = 1
BEGIN
    PRINT 'Committing changes'
    COMMIT TRANSACTION
END
ELSE
BEGIN
    PRINT 'Errors occured. Rolling back changes'
    ROLLBACK TRANSACTION
END

Apparently the compiler "understands" the @finished variable in the IF, even if there was an error and the execution was disabled. However, the value is set to 1 only if the execution was not disabled. Hence I can nicely commit or rollback the transaction accordingly.