Ich muss Aktualisierung (über ON CONFLICT()) Zeile in einer partitionierten Tabellen erreichen.
Bisher meine Versuche:
Tabellenerstellung:PostgreSQL 9.5 Einfügen/Aktualisieren während der Partitionierung Tabelle
CREATE TABLE public.my_tbl
(
goid character varying(255) NOT NULL,
timestamps timestamp without time zone[],
somenumber numeric[],
CONSTRAINT my_tbl_pkey PRIMARY KEY (goid)
)
WITH (
OIDS=FALSE
);
ALTER TABLE public.my_tbl
OWNER TO postgres;
Tabelle Sequenz:
CREATE SEQUENCE public.fixations_data_pkey_seq
INCREMENT 1
MINVALUE 1
MAXVALUE 9223372036854775807
START 1
CACHE 1;
ALTER TABLE public.fixations_data_pkey_seq
OWNER TO postgres;
Tabelle Partition Trigger, die mit dem Namen "table_YYYY_MM_DD" neue Tabelle erstellt, wobei "YYYY_MM_DD" - Strom Datum (Abfrage Ausführungsdatum):
CREATE OR REPLACE FUNCTION public.my_tbl_insert_trigger()
RETURNS trigger AS
$BODY$
DECLARE
table_master varchar(255) := 'my_tbl';
table_part varchar(255) := '';
BEGIN
-- Partition table name --------------------------------------------------
table_part := table_master
|| '_' || DATE_PART('year', NOW())::TEXT
|| '_' || DATE_PART('month', NOW())::TEXT
|| '_' || DATE_PART('day', NOW())::TEXT;
-- Check if partition exists --------------------------------
PERFORM
1
FROM
pg_class
WHERE
relname = table_part
LIMIT
1;
-- If not exist, create new one --------------------------------------------
IF NOT FOUND
THEN
-- Create parition, which inherits master table --------------------------
EXECUTE '
CREATE TABLE ' || table_part || '
(
goid character varying(255) NOT NULL DEFAULT nextval(''' || table_master || '_pkey_seq''::regclass),
CONSTRAINT ' || table_part || '_pkey PRIMARY KEY (goid)
)
INHERITS (' || table_master || ')
WITH (OIDS=FALSE)';
-- Create indices for current table-------------------------------
EXECUTE '
CREATE INDEX ' || table_part || '_adid_date_index
ON ' || table_part || '
USING btree
(goid)';
END IF;
-- Insert row into table (without ON CONFLICT)--------------------------------------------
EXECUTE '
INSERT INTO ' || table_part || '
SELECT ((' || QUOTE_LITERAL(NEW) || ')::' || TG_RELNAME || ').*';
RETURN NULL;
END;
$BODY$
LANGUAGE plpgsql VOLATILE
COST 100;
ALTER FUNCTION public.my_tbl_insert_trigger()
OWNER TO postgres;
CREATE TRIGGER my_tbl_insert_trigger
BEFORE INSERT
ON my_tbl
FOR EACH ROW
EXECUTE PROCEDURE my_tbl_insert_trigger();
Danach kann ich neue Zeilen in die Tabelle einfügen :
INSERT INTO my_tbl (goid, timestamps, somenumber)
VALUES ('qwe123SSsssa3', '{"2016-11-16 00:00:00", "2016-11-16 01:00:00"}', '{3, 12333}')
Aber wenn ich versuche, UPSERT zu tun:
INSERT INTO my_tbl (goid, timestamps, somenumber)
VALUES ('qwe123SSsssa3', '{"2016-11-16 02:00:00"}', '{999}')
ON CONFLICT (goid)
DO UPDATE
SET timestamps=array_append(my_tbl.timestamps::timestamp[], '2016-11-16 02:00:00'),
somenumber=array_append(my_tbl.somenumber,'999');
Ich bin geting DUPLICATE PKEY Fehler.
Ich denke, dass ich ON CONFLICT zur dritten EXECUTE in Trigger-Funktion hinzufügen muss. Aber wie soll ich das machen?