Re: 1.15 DD - order of columns

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От Guillaume Lelarge
Тема Re: 1.15 DD - order of columns
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Msg-id 1335021994.19769.0.camel@localhost.localdomain
обсуждение исходный текст
Ответ на 1.15 DD - order of columns  (Colin Beckingham <colbec@start.ca>)
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On Sat, 2012-04-21 at 07:32 -0400, Colin Beckingham wrote:
> Another issue with creating SQL from the DD is that unpredictably the 
> order of columns will change. Say you have authid, authname in your 
> original table, your copy might be defined as or authid, authname or 
> authname, authid in the copy.
> 
> Order of columns is important in Postgresql since it can't easily be 
> changed after table is created without delete and add back in a specific 
> order.
> 
> It appears to be important with respect to import of data from CSV, for 
> example, where even if the header defines columns in a specific order, 
> the import does not pick that up.
> 
> Workaround is of course to open up the csv in a SS, rearrange the cols 
> to suit, and export back to CSV, or simply drop and recreate the table 
> using the SQL from the original definition if you have that option.

As usual, I added your comments to
http://code.pgadmin.org/trac/wiki/database-designer so that I can keep
track of them when I'll find the time to work on it.


-- 
Guillaume
http://blog.guillaume.lelarge.info
http://www.dalibo.com



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