Re: [HACKERS] rollback varchar change
| От | Vadim B. Mikheev |
|---|---|
| Тема | Re: [HACKERS] rollback varchar change |
| Дата | |
| Msg-id | 34B46A07.DAEA1086@sable.krasnoyarsk.su обсуждение исходный текст |
| Ответ на | Re: [HACKERS] rollback varchar change (Bruce Momjian <maillist@candle.pha.pa.us>) |
| Список | pgsql-hackers |
Bruce Momjian wrote: > > > > > Bruce Momjian wrote: > > > > > > I have found that the varchar() change I made requires a new > > > pg_attribute field, so I am rolling back the change until I get a fully > > ^^^^^^^^^^^^^^^^^^ > > > > Please try some other way. As I remember, you said about breaking > > vl_len into 2 parts - very nice for me, but I'd recommend to leave > > varlena as is and add new structure - for compatibility and to allow > > text (etc) be longer 2^16 someday (multi-representation feature). > > Just like attlen -1 is used in many parts of code to flag varlena, > > you could use -2 to flag new structure. > > OK, I have now figured out that my original idea was sound. The only Having new column in pg_attribute I'm not sure that we need in new structure... Vadim
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