I'd like SYSDATE to work syntactically and semantically the same as CURRENT_TIMESTAMP (or CURRENT_TIME, or whatever). I can create a function called "sysdate" that does the trick, but then it seems I have to reference the function as "sysdate ()," but I want to be able to get away with just "sysdate." It seems that CURRENT_TIMESTAMP and their friends are magic functions that can be referenced without an explicit empty argument list. I have much Oracle-specific code that references sysdate, and porting would be easier if that syntax could work unchanged in Postgres.