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PostgreSQL COPY - using variable filename?

PostgreSQL COPY - using variable filename?

PostgreSQL COPY - using variable filename?

(OP)
Hi all

I would like to create a function that copies CDR-records from text files. This should be done every hour, so I want my function to look something like this:

CREATE OR REPLACE FUNCTION cdr_copy( ) RETURNS VOID AS $$
  DECLARE
    mytime TIMESTAMP := timeofday( );
    cdr_path CHAR(50) := '/home/cdr/';
    cdr_file CHAR(50) := cdr_path + myime;
  BEGIN
...
...
COPY mytable FROM $cdr_file DELIMITER AS ' ';

Since COPY don't take a variable, but only do relative path, then what to do?
Any suggestions?

Regards,
Henrik

RE: PostgreSQL COPY - using variable filename?

Hi

This works for me in PostgreSQL 7.3.3. Try to adapt it to your needs :

CODE

create or replace function loadfile()
returns void as '
declare
  filename varchar:=\'/path/to/datafile.txt\';
begin
  execute \'copy tablename from \'\'\' || filename || \'\'\'\';
  return;
end;
' language plpgsql;

Feherke.
http://rootshell.be/~feherke/

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