Re: GROUPING
От | Andrew Gierth |
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Тема | Re: GROUPING |
Дата | |
Msg-id | 87twv6z6ni.fsf@news-spur.riddles.org.uk обсуждение исходный текст |
Ответ на | Re: GROUPING (Dean Rasheed <dean.a.rasheed@gmail.com>) |
Ответы |
Re: GROUPING
|
Список | pgsql-hackers |
>>>>> "Dean" == Dean Rasheed <dean.a.rasheed@gmail.com> writes: >> Maybe INT8 would be a better choice than INT4? But I'm not sure>> there's any practical use-case for more than 30 groupingsets>> anyway. Keep in mind the actual output volume probably grows like>> 2^N. Dean> Actually using ROLLUP the output volume only grows linearly withDean> N. I tend to think that having such a large numberof groupingDean> sets would be unlikely, however, it seems wrong to be putting anDean> arbitrary limit on it that'ssignificantly smaller than theDean> number of columns allowed in a table. Limit on what exactly? Consider that in both MSSQL 2014 and Oracle 12 the limit on the number of arguments in a GROUPING() expression is ... 1. -- Andrew (irc:RhodiumToad)
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