Re: copy from csv, variable filename within a function

Note: "DELEMITER" should be "DELIMITER".

On Thu, Apr 18, 2013 at 1:34 AM, basti <black(dot)fledermaus(at)arcor(dot)de> wrote:

> I have fixed it with dollar-quoting.
>
> -------- Original-Nachricht -------- Betreff: [SQL] copy from csv,
> variable filename within a function Datum: Thu, 18 Apr 2013 09:26:09
> +0200 Von: basti <black(dot)fledermaus(at)arcor(dot)de> <black(dot)fledermaus(at)arcor(dot)de> An:
> pgsql-sql(at)postgresql(dot)org
>
>
> Hello,
> i have try the following:
>
> -- Function: wetter.copy_ignore_duplicate(character varying)
>
> -- DROP FUNCTION wetter.copy_ignore_duplicate(character varying);
>
> CREATE OR REPLACE FUNCTION wetter.copy_ignore_duplicate(_filename
> character varying)
> RETURNS void AS
> $BODY$
> declare sql text;
>
> BEGIN
> CREATE TEMP TABLE tmp_raw_data
> (
> "timestamp" timestamp without time zone NOT NULL,
> temp_in double precision NOT NULL,
> pressure double precision NOT NULL,
> temp_out double precision NOT NULL,
> humidity double precision NOT NULL,
> wdir integer NOT NULL,
> wspeed double precision NOT NULL,
> CONSTRAINT tmp_raw_data_pkey PRIMARY KEY ("timestamp")
> )
> ON COMMIT DROP;
>
>
> --copy tmp_raw_data(
> -- "timestamp", temp_in, pressure, temp_out, humidity, wdir,
> wspeed)
>
> --FROM '/home/wetter/csv/data/raw/2013/2013-04/2013-04-16.txt'
> --WITH DELIMITER ',';
>
> sql := 'COPY tmp_raw_data(
> -- "timestamp", temp_in, pressure, temp_out, humidity, wdir,
> wspeed) FROM ' || quote_literal(_filename) || 'WITH DELEMITER ',' ';
> execute sql;
>
> -- prevent any other updates while we are merging input (omit this if
> you don't need it)
> LOCK wetter.raw_data IN SHARE ROW EXCLUSIVE MODE;
> -- insert into raw_data table
> INSERT INTO wetter.raw_data(
> "timestamp", temp_in, pressure, temp_out, humidity, wdir,
> wspeed)
>
> SELECT "timestamp", temp_in, pressure, temp_out, humidity, wdir, wspeed
> FROM tmp_raw_data
> WHERE NOT EXISTS (SELECT 1 FROM wetter.raw_data
> WHERE raw_data.timestamp = tmp_raw_data.timestamp);
> END;
> $BODY$
> LANGUAGE plpgsql VOLATILE
> COST 100;
> ALTER FUNCTION wetter.copy_ignore_duplicate(character varying)
> OWNER TO postgres;
>
>
>
> But when i execute it i get the this error:
> (sorry i don't know how to switch the error messages to English lang)
> I think this a problem with escaping the delimiter
>
>
> SELECT wetter.copy_ignore_duplicate(
> '/home/wetter/csv/data/raw/2013/2013-04/2013-04-16.txt'
> );
> #################################
> #################################
>
>
> HINWEIS: CREATE TABLE / PRIMARY KEY erstellt implizit einen Index
> »tmp_raw_data_pkey« für Tabelle »tmp_raw_data«
> CONTEXT: SQL-Anweisung »CREATE TEMP TABLE tmp_raw_data ( "timestamp"
> timestamp without time zone NOT NULL, temp_in double precision NOT NULL,
> pressure double precision NOT NULL, temp_out double precision NOT NULL,
> humidity double precision NOT NULL, wdir integer NOT NULL, wspeed double
> precision NOT NULL, CONSTRAINT tmp_raw_data_pkey PRIMARY KEY
> ("timestamp") ) ON COMMIT DROP«
> PL/pgSQL function "copy_ignore_duplicate" line 4 at SQL-Anweisung
> FEHLER: Anfrage »SELECT 'COPY tmp_raw_data(
> -- "timestamp", temp_in, pressure, temp_out, humidity, wdir,
> wspeed) FROM ' || quote_literal( $1 ) || 'WITH DELEMITER ',' '« hat 2
> Spalten zurückgegeben
> CONTEXT: PL/pgSQL-Funktion »copy_ignore_duplicate« Zeile 29 bei Zuweisung
>
> ********** Fehler **********
>
> FEHLER: Anfrage »SELECT 'COPY tmp_raw_data(
> -- "timestamp", temp_in, pressure, temp_out, humidity, wdir,
> wspeed) FROM ' || quote_literal( $1 ) || 'WITH DELEMITER ',' '« hat 2
> Spalten zurückgegeben
> SQL Status:42601
> Kontext:PL/pgSQL-Funktion »copy_ignore_duplicate« Zeile 29 bei Zuweisung
>
>
>
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>
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