Re: Idea for making COPY data Microsoft-proof
От | Philip Warner |
---|---|
Тема | Re: Idea for making COPY data Microsoft-proof |
Дата | |
Msg-id | 3.0.5.32.20020212111524.01cdb2f0@mail.rhyme.com.au обсуждение исходный текст |
Ответ на | Re: Idea for making COPY data Microsoft-proof (Philip Warner <pjw@rhyme.com.au>) |
Список | pgsql-hackers |
At 07:02 PM 2/11/02 -0500, Tom Lane wrote: >To take just one problem: how do I know that >the first line is metadata, and not data that happens to look exactly >like whatever my metadata layout is? You don't, which is why you need the 'WITH HEADER' or 'WITH ENCODING' clause on COPY. I guess COPY could issue a warning when you do not say WITH HEADER and it looks like a valid header. Other than that, it's a case of storing information about the dumped data, not the database schema in the data file. I'm not particularly attached to the column names being there, but it does seem usefull to store instructions indicating the the file is formatted. ---------------------------------------------------------------- Philip Warner | __---_____ Albatross Consulting Pty. Ltd. |----/ - \ (A.B.N. 75 008 659 498) | /(@) ______---_ Tel: (+61) 0500 83 82 81 | _________ \ Fax: (+61) 0500 83 82 82 | ___________ | Http://www.rhyme.com.au | / \| | --________-- PGP key available upon request, | / and from pgp5.ai.mit.edu:11371 |/
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