From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Brent Verner <brent(at)rcfile(dot)org> |
Cc: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Problem reloading regression database |
Date: | 2002-01-13 16:41:10 |
Message-ID: | 25632.1010940070@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
Brent Verner <brent(at)rcfile(dot)org> writes:
> In CopyFrom, if attlist present, create Form_pg_attribute* ordered
> same as attlist.
Doesn't seem like this can possibly work as-is. The eventual call to
heap_formtuple must supply the column values in the order expected
by the table, but I don't see you remapping from input-column indices to
table-column indices anywhere in the data processing loop.
Also, a reasonable version of this capability would allow the input
column list to be just a subset of the table column list; with the
column default expressions, if any, being evaluated to fill the missing
columns. This would answer the requests we keep having for COPY to be
able to load a table containing a serial-number column.
Don't forget that if the syntax allows COPY (collist) TO file, people
will expect that to work too.
regards, tom lane
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