From: Yuxia Qiu [mailto:yuxiaqiu1@gmail.com] Sent: Wednesday, October 24, 2018 1:29 PMTo: pgsql-general@lists.postgresql.orgSubject: How to retrieve the partition info for each partition table? HI, I have created some partition table, as example bellow:CREATE TABLE public.measurement( city_id integer NOT NULL, logdate date NOT NULL, peaktemp integer, unitsales integer) PARTITION BY RANGE (logdate) ; CREATE TABLE public.measurement_y2006m02 PARTITION OF public.measurement FOR VALUES FROM ('2006-02-01') TO ('2006-03-01'); CREATE TABLE public.measurement_y2006m03 PARTITION OF public.measurement FOR VALUES FROM ('2006-03-01') TO ('2006-04-01'); I know how to get a list partition tables for above example by calling : SELECT i.inhrelid::regclass AS childFROM pg_inherits iWHERE i.inhparent = 'public.measurement'::regclass; My question is: how to get the value boundary for each partition table like bellow?measurement_y2006m02 FROM ('2006-02-01') TO ('2006-03-01')measurement_y2006m03 FROM ('2006-03-01') TO ('2006-04-01') Thanks,Yuxia Better yet: SELECT relname, pg_get_expr(relpartbound, oid) FROM pg_class WHERE relpartbound IS NOT NULL; Regards,Igor Neyman
From: Yuxia Qiu [mailto:yuxiaqiu1@gmail.com] Sent: Wednesday, October 24, 2018 1:29 PMTo: pgsql-general@lists.postgresql.orgSubject: How to retrieve the partition info for each partition table?
HI,
I have created some partition table, as example bellow:
CREATE TABLE public.measurement
(
city_id integer NOT NULL,
logdate date NOT NULL,
peaktemp integer,
unitsales integer
) PARTITION BY RANGE (logdate) ;
CREATE TABLE public.measurement_y2006m02 PARTITION OF public.measurement
FOR VALUES FROM ('2006-02-01') TO ('2006-03-01');
CREATE TABLE public.measurement_y2006m03 PARTITION OF public.measurement
FOR VALUES FROM ('2006-03-01') TO ('2006-04-01');
I know how to get a list partition tables for above example by calling :
SELECT i.inhrelid::regclass AS child
FROM pg_inherits i
WHERE i.inhparent = 'public.measurement'::regclass;
My question is: how to get the value boundary for each partition table like bellow?
measurement_y2006m02 FROM ('2006-02-01') TO ('2006-03-01')
measurement_y2006m03 FROM ('2006-03-01') TO ('2006-04-01')
Thanks,
Yuxia
Better yet:
SELECT relname, pg_get_expr(relpartbound, oid) FROM pg_class WHERE relpartbound IS NOT NULL;
Regards,
Igor Neyman
pgsql-general by date:
Соглашаюсь с условиями обработки персональных данных