jia ding wrote:
yes, of couse COPY
but,
=> copy test to 'test.txt';
ERROR: must be superuser to COPY to or from a file
HINT: Anyone can COPY to stdout or from stdin. psql's \copy command
also works for anyone.
Straight from the documentation:
Do not confuse COPY with the psql instruction \copy. \copy invokes COPY
FROM STDIN or COPY TO STDOUT, and then fetches/stores the data in a file
accessible to the psql client. Thus, file accessibility and access
rights depend on the client rather than the server when \copy is used.
http://www.postgresql.org/docs/8.1/static/sql-copy.html
Doesn't look like \copy lets you specify which fields to include though.
alive=# \d a
Table "public.a"
Column | Type | Modifiers
--------+---------+-----------
a | integer |
db=# \copy a to ./blah.sql (works)
db=# \copy a a to ./blah.sql
\copy: parse error at "a"
On 3/16/06, *Chris* <dmagick@xxxxxxxxx <mailto:dmagick@xxxxxxxxx>> wrote:
jia ding wrote:
> Hi all,
>
> I tried:
> select id, name into table2 from table1;
> \copy table2 to filename.txt
> in order to export 2 columns from table1 to a file.
>
> But, I am thinking, if there is a command can combine these two
command
> together?
> Maybe, something like: \copy select id,name from table to
filename.txt
Close.
copy tablename field1, field2 to 'filename';
http://www.postgresql.org/docs/8.1/static/sql-copy.html
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