COPY TO (FREEZE)?

I noticed that COPY TO accepts FREEZE option but it is pointless.

Don't we reject that option as the first-attached does? I tempted to
add tests for those option combinations that are to be rejected but I
didin't come up with a clean way to do that.

By the way, most of the invalid option combinations for COPY are
marked as ERRCODE_FEATURE_NOT_SUPPORTED. I looks to me saying that
"that feature is theoretically possible or actually realized
elsewhere, but impossible now or here".

If it is correct, aren't they better be ERRCODE_INVALID_PARAMETER_VALUE? The code is being used for similar messages "unrecognized parameter <name>" and "parameter <name> specified more than once" (or some others?). At least a quote string longer than a single character seems like to fit INVALID_PARAMETER_VALUE. (I believe we don't mean to support multicharacter (or even multibyte) escape/quote character anddelimiter). That being said, I'm not sure if the change will be worth the trouble.

regards.

--
Kyotaro Horiguchi
NTT Open Source Software Center