Andreas Pflug <Andreas.Pflug@web.de> writes:
> While implementing a function for making view definitions look prettier
> in pgadmin3, I had a look at ruleutils.c to examine why there are tons
> of parentheses coming out of pg_get_viewdef. I believe that some are
> really not needed.
The difficulty is to know which ones *are* needed in complex
expressions. If you think that any of them are always unnecessary,
you haven't thought hard enough. For example:
> - get_rule_expr, for CASES T_RelabelType and T_CoerceToDomain. The cast
> is always bound to the near left variable, so it can be left out.
What if the argument isn't just a variable?
regards, tom lane