Josh Berkus <josh(at)agliodbs(dot)com> writes:
>> True, but there were clear benefits from doing so. Disallowing "="
>> assignment in plpgsql wouldn't buy anything, just break programs.
> But it's already disallowed in most places.
No it isn't. The plpgsql scanner treats := and = as *the same token*.
They can be interchanged freely. This has nothing to do with the case
of modifying a loop variable in particular.
regards, tom lane