postgresql copy from csv file into table in windows through procedure - postgresql

Question

below is my procedure executed to upload file into table and do joins etc.
CREATE OR REPLACE FUNCTION sp_product_price()
RETURNS void
LANGUAGE 'plpgsql'
COST 100
AS $BODY$
BEGIN
truncate table prd_product_data;
truncate table price_import;
COPY price_import FROM 'C:\Users\Ram\Documents\prices.csv' CSV HEADER;
truncate table active_product_price;
insert into active_product_price(key,name,price)
SELECT prd.key,prd.name,prd.price FROM prd_product_data prd JOIN price_import import ON prd.name = import.name;
raise notice 'success';
END
$BODY$;
Above procedure giving error could not open file "C:\Users\Ram\Documents\prices.csv" for reading: No such file or directory HINT: COPY FROM instructs the PostgreSQL server process to read a file. You may want a client-side facility such as psql's \copy.
I have given access to file for everyone in file properties.
I tried \copy in procedure but this gives error syntax error at or near "\" .
\copy is working when I ran cmd in psql but not in above procedure.
Is there a way to import file into table in above procedure/functions ?

Answer 1

The procedure and the COPY statement are running on the database server, so the file C:\Users\Ram\Documents\prices.csv must be on the database server as well (and your database user must either be a superuser or a member of pg_read_server_files).
The only way you can use COPY to load data from the client is COPY ... FROM STDIN, and you won't be able to use that in a procedure.
\copy is a psql command, not an SQL statement, so it cannot be used in a procedure either.
My suggestion is to use \copy, but to forget about the procedure.