On 01/15/2011 01:24 PM, Itagaki Takahiro wrote:
On Sun, Jan 16, 2011 at 02:29, Andrew Dunstan<and...@dunslane.net> wrote:
"textarray". This option would require that the foreign table have exactly
one field, of type text[], and would compose all the field strings read from
the file for each record into the array (however many there are).
CREATE FOREIGN TABLE arr_text (
t text[]
) SERVER file_server
OPTIONS (format 'csv', filename '/path/to/ragged.csv', textarray 'true');
FOREIGN TABLE has stable definitions, so there are some issues
that doesn't exist in COPY command:
- when the type of the last column is not a text[]
- when the last column is changed by ALTER FOREIGN TABLE ADD/DROP COLUMN
I intended that this would be checked for validity at runtime, in
BeginCopy(). If the table doesn't match the requirement an error would
be raised. I don't think it's a big problem.
BTW, those options could be specified in column options rather than table
options. But we don't have column option syntax in the current proposal.
CREATE FOREIGN TABLE arr_text (
i integer OPTION (column 1), -- column position in csv file
t text[] OPTION (column 'all the rest'),
d date OPTION (column 2)
) SERVER file_server
OPTIONS (format 'csv', filename '/path/to/ragged.csv');
Well, ok, but is there any proposal on the table to do that?
cheers
andrew
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