Multilevel partitioning

-------------------------------------------------------------------------------------

CREATE TABLE test (

grupa character varying(1),

id integer,

num integer NOT NULL

);

CREATE TABLE test1 (CONSTRAINT "ABC" CHECK (((grupa >= 'A'::text) AND (grupa <= 'C'::text))))

INHERITS (test);

CREATE TABLE test1a (CONSTRAINT "A" CHECK ((grupa = 'A'::text)))

INHERITS (test1);

CREATE TABLE test1b (CONSTRAINT "B" CHECK ((grupa = 'B'::text)))

INHERITS (test1);

CREATE TABLE test1c (CONSTRAINT "C" CHECK ((grupa = 'C'::text)))

INHERITS (test1);

CREATE TABLE test2 (CONSTRAINT "DEF" CHECK (((grupa >= 'D'::text) AND (grupa <= 'F'::text))))

INHERITS (test);

CREATE TABLE test2d (CONSTRAINT "D" CHECK ((grupa = 'D'::text)))

INHERITS (test2);

CREATE TABLE test2e (CONSTRAINT "E" CHECK ((grupa = 'E'::text)))

INHERITS (test2);

CREATE TABLE test2f (CONSTRAINT "F" CHECK ((grupa = 'F'::text)))

INHERITS (test2);