Re: Proposal : REINDEX xxx VERBOSE

On 5/7/15, Sawada Masahiko <sawada(dot)mshk(at)gmail(dot)com> wrote:
> On Wed, May 6, 2015 at 5:42 AM, Robert Haas <robertmhaas(at)gmail(dot)com
> <javascript:;>> wrote:
>> On Tue, May 5, 2015 at 11:10 AM, Sawada Masahiko <sawada(dot)mshk(at)gmail(dot)com
> <javascript:;>> wrote:
>>> On Fri, May 1, 2015 at 9:04 PM, Robert Haas <robertmhaas(at)gmail(dot)com
> <javascript:;>> wrote:
>>>> On Thu, Apr 30, 2015 at 11:05 PM, Sawada Masahiko
>>>> <sawada(dot)mshk(at)gmail(dot)com
> <javascript:;>> wrote:
>>>>> VACUUM has both syntax: with parentheses and without parentheses.
>>>>> I think we should have both syntax for REINDEX like VACUUM does
>>>>> because it would be pain to put parentheses whenever we want to do
>>>>> REINDEX.
>>>>> Are the parentheses optional in REINDEX command?
>>>>
>>>> No. The unparenthesized VACUUM syntax was added back before we
>>>> realized that that kind of syntax is a terrible idea. It requires
>>>> every option to be a keyword, and those keywords have to be in a fixed
>>>> order. I believe the intention is to keep the old VACUUM syntax
>>>> around for backward-compatibility, but not to extend it. Same for
>>>> EXPLAIN and COPY.
>>>
>>> REINDEX will have only one option VERBOSE for now.
>>> Even we're in a situation like that it's not clear to be added newly
>>> additional option to REINDEX now, we should need to put parenthesis?
>>
>> In my opinion, yes. The whole point of a flexible options syntax is
>> that we can add new options without changing the grammar. That
>> involves some compromise on the syntax, which doesn't bother me a bit.
>> Our previous experiments with this for EXPLAIN and COPY and VACUUM
>> have worked out quite well, and I see no reason for pessimism here.
>
> I agree that flexible option syntax does not need to change grammar
> whenever we add new options.
> Attached patch is changed based on your suggestion.
> And the patch for reindexdb is also attached.
> Please feedbacks.
>
>>> Also I'm not sure that both implementation and documentation regarding
>>> VERBOSE option should be optional.
>>
>> I don't know what this means.
>>
>
> Sorry for confusing you.
> Please ignore this.
>

Sorry, I forgot attach files.

Regards,

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Sawada Masahiko