--
-- PARTITION_SPLIT
-- Tests for "ALTER TABLE ... SPLIT PARTITION ..." command
--

CREATE SCHEMA partition_split_schema;
CREATE SCHEMA partition_split_schema2;
SET search_path = partition_split_schema, public;

--
-- BY RANGE partitioning
--

--
-- Test for error codes
--
CREATE TABLE sales_range (salesperson_id int, sales_date date) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

-- ERROR:  relation "sales_xxx" does not exist
ALTER TABLE sales_range SPLIT PARTITION sales_xxx INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  relation "sales_jan2022" already exists
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  invalid bound specification for a range partition
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_jan2022 FOR VALUES IN ('2022-05-01', '2022-06-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  empty range bound specified for partition "sales_mar2022"
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-02-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

--ERROR:  list of split partitions should contain at least two items
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-10-01'));

-- ERROR:  lower bound of partition "sales_feb2022" is not equal to lower bound of split partition "sales_feb_mar_apr2022"
-- HINT:  ALTER TABLE ... SPLIT PARTITION require combined bounds of new partitions must exactly match the bound of the split partition
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-01-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  partition with name "sales_feb_mar_apr2022" is already used
-- (We can create partition with the same name as split partition, but can't create two partitions with the same name)
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_feb_mar_apr2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  partition with name "sales_feb2022" is already used
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  partition with name "sales_feb2022" is already used
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION partition_split_schema.sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  ALTER action SPLIT PARTITION cannot be performed on relation "sales_feb_mar_apr2022"
-- DETAIL:  This operation is not supported for tables.
ALTER TABLE sales_feb_mar_apr2022 SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_jan2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- ERROR:  upper bound of partition "sales_apr2022" is not equal to upper bound of split partition "sales_feb_mar_apr2022"
-- HINT:  ALTER TABLE ... SPLIT PARTITION require combined bounds of new partitions must exactly match the bound of the split partition
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));

-- ERROR:  can not split to partition "sales_mar2022" together with partition "sales_feb2022"
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-02-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- Tests for spaces between partitions, them should be executed without DEFAULT partition
ALTER TABLE sales_range DETACH PARTITION sales_others;

-- ERROR:  lower bound of partition "sales_feb2022" is not equal to lower bound of split partition "sales_feb_mar_apr2022"
-- HINT:  ALTER TABLE ... SPLIT PARTITION require combined bounds of new partitions must exactly match the bound of the split partition
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-02') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- Check the source partition not in the search path
SET search_path = partition_split_schema2, public;
ALTER TABLE partition_split_schema.sales_range
SPLIT PARTITION partition_split_schema.sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
SET search_path = partition_split_schema, public;
\d+ sales_range

DROP TABLE sales_range;
DROP TABLE sales_others;

-- Additional tests for error messages, no default partition
CREATE TABLE sales_range (sales_date date) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');

-- ERROR:  upper bound of partition "sales_apr2022" is not equal to upper bound of split partition "sales_feb_mar_apr2022"
-- HINT:  ALTER TABLE ... SPLIT PARTITION require combined bounds of new partitions must exactly match the bound of the split partition
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-06-01'));

DROP TABLE sales_range;

--
-- Add rows into partitioned table then split partition
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-10'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-11'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09'),
  (14, 'Smith',    510,  '2022-05-04');

ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;
DROP TABLE sales_range CASCADE;

--
-- Add split partition, then add rows into partitioned table
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-10'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-11'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09'),
  (14, 'Smith',    510,  '2022-05-04');

-- Split partition, also check schema qualification of new partitions
ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION partition_split_schema.sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION partition_split_schema2.sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));
\d+ sales_range

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE sales_range CASCADE;

--
-- Test for:
--   * composite partition key;
--   * GENERATED column;
--   * column with DEFAULT value.
--
CREATE TABLE sales_date (salesperson_name VARCHAR(30), sales_year INT, sales_month INT, sales_day INT,
  sales_date VARCHAR(10) GENERATED ALWAYS AS
    (LPAD(sales_year::text, 4, '0') || '.' || LPAD(sales_month::text, 2, '0') || '.' || LPAD(sales_day::text, 2, '0')) STORED,
  sales_department VARCHAR(30) DEFAULT 'Sales department')
  PARTITION BY RANGE (sales_year, sales_month, sales_day);

CREATE TABLE sales_dec2021 PARTITION OF sales_date FOR VALUES FROM (2021, 12, 1) TO (2022, 1, 1);
CREATE TABLE sales_jan_feb2022 PARTITION OF sales_date FOR VALUES FROM (2022, 1, 1) TO (2022, 3, 1);
CREATE TABLE sales_other PARTITION OF sales_date FOR VALUES FROM (2022, 3, 1) TO (MAXVALUE, MAXVALUE, MAXVALUE);

INSERT INTO sales_date(salesperson_name, sales_year, sales_month, sales_day) VALUES
  ('Manager1', 2021, 12, 7),
  ('Manager2', 2021, 12, 8),
  ('Manager3', 2022, 1, 1),
  ('Manager1', 2022, 2, 4),
  ('Manager2', 2022, 1, 2),
  ('Manager3', 2022, 2, 1),
  ('Manager1', 2022, 3, 3),
  ('Manager2', 2022, 3, 4),
  ('Manager3', 2022, 5, 1);

SELECT tableoid::regclass, * FROM sales_date ORDER BY tableoid::regclass::text COLLATE "C", sales_year, sales_month, sales_day;

ALTER TABLE sales_date SPLIT PARTITION sales_jan_feb2022 INTO
  (PARTITION sales_jan2022 FOR VALUES FROM (2022, 1, 1) TO (2022, 2, 1),
   PARTITION sales_feb2022 FOR VALUES FROM (2022, 2, 1) TO (2022, 3, 1));

INSERT INTO sales_date(salesperson_name, sales_year, sales_month, sales_day) VALUES
  ('Manager1', 2022, 1, 10),
  ('Manager2', 2022, 2, 10);

SELECT tableoid::regclass, * FROM sales_date ORDER BY tableoid::regclass::text COLLATE "C", sales_year, sales_month, sales_day;

DROP TABLE sales_date CASCADE;

--
-- Test: split DEFAULT partition; use an index on partition key; check index after split
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;
CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-10'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-11'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09'),
  (14, 'Smith',    510,  '2022-05-04');

SELECT * FROM sales_others;
SELECT * FROM pg_indexes WHERE tablename = 'sales_others' and schemaname = 'partition_split_schema' ORDER BY indexname COLLATE "C";

ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
   PARTITION sales_others DEFAULT);

-- Use indexscan for testing indexes
SET enable_seqscan = OFF;

EXPLAIN (COSTS OFF) SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
SELECT * FROM sales_feb2022 where sales_date > '2022-01-01';
EXPLAIN (COSTS OFF) SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
SELECT * FROM sales_mar2022 where sales_date > '2022-01-01';
EXPLAIN (COSTS OFF) SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
SELECT * FROM sales_apr2022 where sales_date > '2022-01-01';
EXPLAIN (COSTS OFF) SELECT * FROM sales_others where sales_date > '2022-01-01';
SELECT * FROM sales_others where sales_date > '2022-01-01';

RESET enable_seqscan;

SELECT * FROM pg_indexes
WHERE tablename in ('sales_feb2022', 'sales_mar2022', 'sales_apr2022', 'sales_others')
AND schemaname = 'partition_split_schema'
ORDER BY indexname COLLATE "C";

DROP TABLE sales_range CASCADE;

--
-- Test: some cases for splitting DEFAULT partition (different bounds)
--
CREATE TABLE sales_range (salesperson_id INT, sales_date date) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

-- sales_error intersects with sales_dec2021 (lower bound)
-- ERROR:  can not split to partition "sales_error" together with partition "sales_dec2021"
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_error FOR VALUES FROM ('2021-12-30') TO ('2022-02-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

-- sales_error intersects with sales_feb2022 (upper bound)
-- ERROR:  can not split to partition "sales_feb2022" together with partition "sales_error"
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_error FOR VALUES FROM ('2022-01-01') TO ('2022-02-02'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

-- sales_error intersects with sales_dec2021 (inside bound)
-- ERROR:  can not split to partition "sales_error" together with partition "sales_dec2021"
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_error FOR VALUES FROM ('2021-12-10') TO ('2021-12-20'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

-- sales_error intersects with sales_dec2021 (exactly the same bounds)
-- ERROR:  can not split to partition "sales_error" together with partition "sales_dec2021"
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_error FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

-- ERROR:  can not split DEFAULT partition "sales_others"
-- HINT:  To split DEFAULT partition one of the new partition msut be DEFAULT
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_jan2022 FOR VALUES FROM ('2022-01-01') TO ('2022-02-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'));

-- no error: bounds of sales_noerror are between sales_dec2021 and sales_feb2022
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_noerror FOR VALUES FROM ('2022-01-10') TO ('2022-01-20'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

DROP TABLE sales_range;

CREATE TABLE sales_range (sales_date date) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

-- no error: bounds of sales_noerror are equal to lower and upper bounds of sales_dec2021 and sales_feb2022
ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_dec2021 FOR VALUES FROM ('2021-12-01') TO ('2022-01-01'),
   PARTITION sales_noerror FOR VALUES FROM ('2022-01-01') TO ('2022-02-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

DROP TABLE sales_range;

--
-- Test: split partition with CHECK and FOREIGN KEY CONSTRAINTs on partitioned table
--
CREATE TABLE salespeople(salesperson_id INT PRIMARY KEY, salesperson_name VARCHAR(30));
INSERT INTO salespeople VALUES (1,  'Poirot');

CREATE TABLE sales_range (
salesperson_id INT REFERENCES salespeople(salesperson_id),
sales_amount INT CHECK (sales_amount > 1),
sales_date DATE) PARTITION BY RANGE (sales_date);

CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_feb_mar_apr2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb_mar_apr2022'::regclass::oid ORDER BY conname COLLATE "C";

ALTER TABLE sales_range SPLIT PARTITION sales_feb_mar_apr2022 INTO
  (PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_mar2022 FOR VALUES FROM ('2022-03-01') TO ('2022-04-01'),
   PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'));

-- We should see the same CONSTRAINTs as on sales_feb_mar_apr2022 partition
SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_feb2022'::regclass::oid ORDER BY conname COLLATE "C";
SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_mar2022'::regclass::oid ORDER BY conname COLLATE "C";
SELECT pg_get_constraintdef(oid), conname, conkey FROM pg_constraint WHERE conrelid = 'sales_apr2022'::regclass::oid ORDER BY conname COLLATE "C";

-- ERROR:  new row for relation "sales_mar2022" violates check constraint "sales_range_sales_amount_check"
INSERT INTO sales_range VALUES (1, 0, '2022-03-11');
-- ERROR:  insert or update on table "sales_mar2022" violates foreign key constraint "sales_range_salesperson_id_fkey"
INSERT INTO sales_range VALUES (-1, 10, '2022-03-11');
-- ok
INSERT INTO sales_range VALUES (1, 10, '2022-03-11');

DROP TABLE sales_range CASCADE;
DROP TABLE salespeople CASCADE;

--
-- Test: split partition on partitioned table in case of existing FOREIGN KEY reference from another table
--
CREATE TABLE salespeople(salesperson_id INT PRIMARY KEY, salesperson_name VARCHAR(30)) PARTITION BY RANGE (salesperson_id);
CREATE TABLE sales (salesperson_id INT REFERENCES salespeople(salesperson_id), sales_amount INT, sales_date DATE);

CREATE TABLE salespeople01_10 PARTITION OF salespeople FOR VALUES FROM (1) TO (10);
CREATE TABLE salespeople10_40 PARTITION OF salespeople FOR VALUES FROM (10) TO (40);

INSERT INTO salespeople VALUES
  (1,  'Poirot'),
  (10, 'May'),
  (19, 'Ivanov'),
  (20, 'Smirnoff'),
  (30, 'Ford');

INSERT INTO sales VALUES
  (1,  100, '2022-03-01'),
  (1,  110, '2022-03-02'),
  (10, 150, '2022-03-01'),
  (10, 90,  '2022-03-03'),
  (19, 200, '2022-03-04'),
  (20, 50,  '2022-03-12'),
  (20, 170, '2022-03-02'),
  (30, 30,  '2022-03-04');

SELECT tableoid::regclass, * FROM salespeople ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

ALTER TABLE salespeople SPLIT PARTITION salespeople10_40 INTO
  (PARTITION salespeople10_20 FOR VALUES FROM (10) TO (20),
   PARTITION salespeople20_30 FOR VALUES FROM (20) TO (30),
   PARTITION salespeople30_40 FOR VALUES FROM (30) TO (40));

SELECT tableoid::regclass, * FROM salespeople ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

-- ERROR:  insert or update on table "sales" violates foreign key constraint "sales_salesperson_id_fkey"
INSERT INTO sales VALUES (40, 50,  '2022-03-04');
-- ok
INSERT INTO sales VALUES (30, 50,  '2022-03-04');

DROP TABLE sales CASCADE;
DROP TABLE salespeople CASCADE;

--
-- Test: split partition of partitioned table with triggers
--
CREATE TABLE salespeople(salesperson_id INT PRIMARY KEY, salesperson_name VARCHAR(30)) PARTITION BY RANGE (salesperson_id);

CREATE TABLE salespeople01_10 PARTITION OF salespeople FOR VALUES FROM (1) TO (10);
CREATE TABLE salespeople10_40 PARTITION OF salespeople FOR VALUES FROM (10) TO (40);

INSERT INTO salespeople VALUES (1,  'Poirot');

CREATE OR REPLACE FUNCTION after_insert_row_trigger() RETURNS trigger LANGUAGE 'plpgsql' AS $BODY$
BEGIN
    RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
    RETURN NULL;
END;
$BODY$;

CREATE TRIGGER salespeople_after_insert_statement_trigger
    AFTER INSERT
    ON salespeople
    FOR EACH STATEMENT
    EXECUTE PROCEDURE after_insert_row_trigger('salespeople');

CREATE TRIGGER salespeople_after_insert_row_trigger
    AFTER INSERT
    ON salespeople
    FOR EACH ROW
    EXECUTE PROCEDURE after_insert_row_trigger('salespeople');

-- 2 triggers should fire here (row + statement):
INSERT INTO salespeople VALUES (10, 'May');
-- 1 trigger should fire here (row):
INSERT INTO salespeople10_40 VALUES (19, 'Ivanov');

ALTER TABLE salespeople SPLIT PARTITION salespeople10_40 INTO
  (PARTITION salespeople10_20 FOR VALUES FROM (10) TO (20),
   PARTITION salespeople20_30 FOR VALUES FROM (20) TO (30),
   PARTITION salespeople30_40 FOR VALUES FROM (30) TO (40));

-- 2 triggers should fire here (row + statement):
INSERT INTO salespeople VALUES (20, 'Smirnoff');
-- 1 trigger should fire here (row):
INSERT INTO salespeople30_40 VALUES (30, 'Ford');

SELECT tableoid::regclass, * FROM salespeople ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE salespeople CASCADE;
DROP FUNCTION after_insert_row_trigger();

--
-- Test: split partition witch identity column
-- If split partition column is identity column, columns of new partitions are identity columns too.
--
CREATE TABLE salespeople(salesperson_id INT GENERATED ALWAYS AS IDENTITY PRIMARY KEY, salesperson_name VARCHAR(30)) PARTITION BY RANGE (salesperson_id);

CREATE TABLE salespeople1_2 PARTITION OF salespeople FOR VALUES FROM (1) TO (2);
-- Create new partition with identity column:
CREATE TABLE salespeople2_5(salesperson_id INT NOT NULL, salesperson_name VARCHAR(30));
ALTER TABLE salespeople ATTACH PARTITION salespeople2_5 FOR VALUES FROM (2) TO (5);

INSERT INTO salespeople (salesperson_name) VALUES ('Poirot'), ('Ivanov');

ALTER TABLE salespeople SPLIT PARTITION salespeople2_5 INTO
  (PARTITION salespeople2_3 FOR VALUES FROM (2) TO (3),
   PARTITION salespeople3_4 FOR VALUES FROM (3) TO (4),
   PARTITION salespeople4_5 FOR VALUES FROM (4) TO (5));

INSERT INTO salespeople (salesperson_name) VALUES ('May'), ('Ford');

SELECT tableoid::regclass, * FROM salespeople ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

-- check new partitions have identity or not after split partition
SELECT attrelid::regclass, attname, attidentity, attgenerated FROM pg_attribute
WHERE attnum > 0
AND attrelid::regclass IN (
  'salespeople2_3'::regclass, 'salespeople', 'salespeople2_3',
  'salespeople1_2', 'salespeople3_4', 'salespeople4_5')
ORDER BY attrelid::regclass::text COLLATE "C", attnum;

DROP TABLE salespeople CASCADE;

--
-- Test: split partition with deleted columns
--
CREATE TABLE salespeople(salesperson_id INT PRIMARY KEY, salesperson_name VARCHAR(30)) PARTITION BY RANGE (salesperson_id);

CREATE TABLE salespeople01_10 PARTITION OF salespeople FOR VALUES FROM (1) TO (10);
-- Create new partition with some deleted columns:
CREATE TABLE salespeople10_40(d1 VARCHAR(30), salesperson_id INT PRIMARY KEY, d2 INT, d3 DATE, salesperson_name VARCHAR(30));

INSERT INTO salespeople10_40 VALUES
  ('dummy value 1', 19, 100, now(), 'Ivanov'),
  ('dummy value 2', 20, 101, now(), 'Smirnoff');

ALTER TABLE salespeople10_40 DROP COLUMN d1;
ALTER TABLE salespeople10_40 DROP COLUMN d2;
ALTER TABLE salespeople10_40 DROP COLUMN d3;

ALTER TABLE salespeople ATTACH PARTITION salespeople10_40 FOR VALUES FROM (10) TO (40);

INSERT INTO salespeople VALUES
  (1, 'Poirot'),
  (10, 'May'),
  (30, 'Ford');

ALTER TABLE salespeople SPLIT PARTITION salespeople10_40 INTO
  (PARTITION salespeople10_20 FOR VALUES FROM (10) TO (20),
   PARTITION salespeople20_30 FOR VALUES FROM (20) TO (30),
   PARTITION salespeople30_40 FOR VALUES FROM (30) TO (40));

SELECT tableoid::regclass, * FROM salespeople ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE salespeople CASCADE;

--
-- Test: split sub-partition
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_feb2022 PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-03-01');
CREATE TABLE sales_mar2022 PARTITION OF sales_range FOR VALUES FROM ('2022-03-01') TO ('2022-04-01');

CREATE TABLE sales_apr2022 (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_apr_all PARTITION OF sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');
ALTER TABLE sales_range ATTACH PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01');

CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

CREATE INDEX sales_range_sales_date_idx ON sales_range USING btree (sales_date);

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-10'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-11'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09'),
  (14, 'Smith',    510,  '2022-05-04');

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

ALTER TABLE sales_apr2022 SPLIT PARTITION sales_apr_all INTO
  (PARTITION sales_apr2022_01_10 FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
   PARTITION sales_apr2022_10_20 FOR VALUES FROM ('2022-04-10') TO ('2022-04-20'),
   PARTITION sales_apr2022_20_30 FOR VALUES FROM ('2022-04-20') TO ('2022-05-01'));

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE sales_range;

--
-- BY LIST partitioning
--

--
-- Test: specific errors for BY LIST partitioning
--
CREATE TABLE sales_list (sales_state VARCHAR(20)) PARTITION BY LIST (sales_state);

CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Oslo', 'St. Petersburg', 'Helsinki');
CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Beijing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;

-- ERROR:  new partition "sales_east" would overlap with another (not split) partition "sales_nord"
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok', 'Helsinki'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));

-- ERROR:  new partition "sales_west" would overlap with another new partition "sales_central"
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Lisbon', 'Kyiv'));

-- ERROR:  new partition "sales_west" cannot have NULL value because split partition "sales_all" does not have
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', NULL),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));

-- ERROR:  new partition "sales_west" cannot have this value because split partition "sales_all" does not have
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', 'Melbourne'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));

-- ERROR:  new partition cannot be DEFAULT because DEFAULT partition "sales_others" already exists
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid', 'Melbourne'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'),
   PARTITION sales_others2 DEFAULT);

DROP TABLE sales_list;

-- Test for non-symbolic comparison of values (numeric values '0' and '0.0' are equal).
CREATE TABLE t (a numeric) PARTITION BY LIST (a);
CREATE TABLE t1 PARTITION OF t FOR VALUES in  ('0', '1');
-- ERROR:  new partition "x" would overlap with another new partition "x1"
ALTER TABLE t SPLIT PARTITION t1 INTO
  (PARTITION x FOR VALUES IN ('0'),
   PARTITION x1 FOR VALUES IN ('0.0', '1'));
DROP TABLE t;

--
-- Test: two specific errors for BY LIST partitioning:
--   * new partitions do not have NULL value, which split partition has.
--   * new partitions do not have a value that split partition has.
--
CREATE TABLE sales_list(sales_state VARCHAR(20)) PARTITION BY LIST (sales_state);

CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Beijing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok', NULL);

-- ERROR:  new partitions combined partition bounds do not contain value (NULL) but split partition "sales_all" does
-- HINT:  ALTER TABLE ... SPLIT PARTITION require combined bounds of new partitions must exactly match the bound of the split partition
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));

-- ERROR:  new partitions combined partition bounds do not contain value ('Kyiv'::character varying(20)) but split partition "sales_all" does
-- HINT:  ALTER TABLE ... SPLIT PARTITION require combined bounds of new partitions must exactly match the bound of the split partition
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', NULL));

-- ERROR  DEFAULT partition should be one
ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'),
   PARTITION sales_others DEFAULT,
   PARTITION sales_others2 DEFAULT);

DROP TABLE sales_list;

--
-- Test: BY LIST partitioning, SPLIT PARTITION with data
--
CREATE TABLE sales_list
(salesperson_id SERIAL,
 salesperson_name VARCHAR(30),
 sales_state VARCHAR(20),
 sales_amount INT,
 sales_date DATE)
PARTITION BY LIST (sales_state);

CREATE INDEX sales_list_salesperson_name_idx ON sales_list USING btree (salesperson_name);
CREATE INDEX sales_list_sales_state_idx ON sales_list USING btree (sales_state);

CREATE TABLE sales_nord PARTITION OF sales_list FOR VALUES IN ('Helsinki', 'St. Petersburg', 'Oslo');
CREATE TABLE sales_all PARTITION OF sales_list FOR VALUES IN ('Warsaw', 'Lisbon', 'New York', 'Madrid', 'Beijing', 'Berlin', 'Delhi', 'Kyiv', 'Vladivostok');
CREATE TABLE sales_others PARTITION OF sales_list DEFAULT;

INSERT INTO sales_list (salesperson_name, sales_state, sales_amount, sales_date) VALUES
  ('Trump',    'Beijing',         1000, '2022-03-01'),
  ('Smirnoff', 'New York',        500, '2022-03-03'),
  ('Ford',     'St. Petersburg', 2000, '2022-03-05'),
  ('Ivanov',   'Warsaw',          750, '2022-03-04'),
  ('Deev',     'Lisbon',          250, '2022-03-07'),
  ('Poirot',   'Berlin',         1000, '2022-03-01'),
  ('May',      'Oslo',           1200, '2022-03-06'),
  ('Li',       'Vladivostok',    1150, '2022-03-09'),
  ('May',      'Oslo',           1200, '2022-03-11'),
  ('Halder',   'Helsinki',        800, '2022-03-02'),
  ('Muller',   'Madrid',          650, '2022-03-05'),
  ('Smith',    'Kyiv',            350, '2022-03-10'),
  ('Gandi',    'Warsaw',          150, '2022-03-08'),
  ('Plato',    'Lisbon',          950, '2022-03-05');

ALTER TABLE sales_list SPLIT PARTITION sales_all INTO
  (PARTITION sales_west FOR VALUES IN ('Lisbon', 'New York', 'Madrid'),
   PARTITION sales_east FOR VALUES IN ('Beijing', 'Delhi', 'Vladivostok'),
   PARTITION sales_central FOR VALUES IN ('Warsaw', 'Berlin', 'Kyiv'));

SELECT tableoid::regclass, * FROM sales_list ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

-- Use indexscan for testing indexes after splitting partition
SET enable_seqscan = OFF;

EXPLAIN (COSTS OFF) SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
SELECT * FROM sales_central WHERE sales_state = 'Warsaw';
EXPLAIN (COSTS OFF) SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
SELECT * FROM sales_list WHERE sales_state = 'Warsaw';
EXPLAIN (COSTS OFF) SELECT * FROM sales_list WHERE salesperson_name = 'Ivanov';
SELECT * FROM sales_list WHERE salesperson_name = 'Ivanov';

RESET enable_seqscan;

DROP TABLE sales_list;

--
-- Test for:
--   * split DEFAULT partition to partitions with spaces between bounds;
--   * random order of partitions in SPLIT PARTITION command.
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_others PARTITION OF sales_range DEFAULT;

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-09'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-07'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09'),
  (14, 'Smith',    510,  '2022-05-04');

ALTER TABLE sales_range SPLIT PARTITION sales_others INTO
  (PARTITION sales_others DEFAULT,
   PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
   PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
   PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
   PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'));

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE sales_range;

--
-- Test for:
--   * split non-DEFAULT partition to partitions with spaces between bounds;
--   * random order of partitions in SPLIT PARTITION command.
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-05-01');

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-09'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-07'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09');

ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
  (PARTITION sales_mar2022_1decade FOR VALUES FROM ('2022-03-01') TO ('2022-03-10'),
   PARTITION sales_jan2022_1decade FOR VALUES FROM ('2022-01-01') TO ('2022-01-10'),
   PARTITION sales_feb2022_1decade FOR VALUES FROM ('2022-02-01') TO ('2022-02-10'),
   PARTITION sales_apr2022_1decade FOR VALUES FROM ('2022-04-01') TO ('2022-04-10'),
   PARTITION sales_others DEFAULT);

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE sales_range;

--
-- Test for split non-DEFAULT partition to DEFAULT partition + partitions
-- with spaces between bounds.
--
CREATE TABLE sales_range (salesperson_id INT, salesperson_name VARCHAR(30), sales_amount INT, sales_date DATE) PARTITION BY RANGE (sales_date);
CREATE TABLE sales_jan2022 PARTITION OF sales_range FOR VALUES FROM ('2022-01-01') TO ('2022-02-01');
CREATE TABLE sales_all PARTITION OF sales_range FOR VALUES FROM ('2022-02-01') TO ('2022-05-01');

INSERT INTO sales_range VALUES
  (1,  'May',      1000, '2022-01-31'),
  (2,  'Smirnoff', 500,  '2022-02-10'),
  (3,  'Ford',     2000, '2022-04-30'),
  (4,  'Ivanov',   750,  '2022-04-13'),
  (5,  'Deev',     250,  '2022-04-07'),
  (6,  'Poirot',   150,  '2022-02-11'),
  (7,  'Li',       175,  '2022-03-08'),
  (8,  'Ericsson', 185,  '2022-02-23'),
  (9,  'Muller',   250,  '2022-03-11'),
  (10, 'Halder',   350,  '2022-01-28'),
  (11, 'Trump',    380,  '2022-04-06'),
  (12, 'Plato',    350,  '2022-03-19'),
  (13, 'Gandi',    377,  '2022-01-09');

ALTER TABLE sales_range SPLIT PARTITION sales_all INTO
  (PARTITION sales_apr2022 FOR VALUES FROM ('2022-04-01') TO ('2022-05-01'),
   PARTITION sales_feb2022 FOR VALUES FROM ('2022-02-01') TO ('2022-03-01'),
   PARTITION sales_others DEFAULT);

INSERT INTO sales_range VALUES (14, 'Smith',    510,  '2022-05-04');

SELECT tableoid::regclass, * FROM sales_range ORDER BY tableoid::regclass::text COLLATE "C", salesperson_id;

DROP TABLE sales_range;

--
-- Try to SPLIT partition of another table.
--
CREATE TABLE t1(i int, t text) PARTITION BY LIST (t);
CREATE TABLE t1pa PARTITION OF t1 FOR VALUES IN ('A');
CREATE TABLE t2 (i int, t text) PARTITION BY RANGE (t);

-- ERROR:  relation "t1pa" is not a partition of relation "t2"
ALTER TABLE t2 SPLIT PARTITION t1pa INTO
   (PARTITION t2a FOR VALUES FROM ('A') TO ('B'),
    PARTITION t2b FOR VALUES FROM ('B') TO ('C'));

DROP TABLE t2;
DROP TABLE t1;

--
-- Try to SPLIT partition of temporary table.
--
CREATE TEMP TABLE t (i int) PARTITION BY RANGE (i);
CREATE TEMP TABLE tp_0_2 PARTITION OF t FOR VALUES FROM (0) TO (2);

SELECT c.oid::pg_catalog.regclass, pg_catalog.pg_get_expr(c.relpartbound, c.oid), c.relpersistence
  FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
  WHERE c.oid = i.inhrelid AND i.inhparent = 't'::regclass
  ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text COLLATE "C";

-- ERROR:  cannot create a permanent relation as partition of temporary relation "t"
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2));

ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION pg_temp.tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION pg_temp.tp_1_2 FOR VALUES FROM (1) TO (2));

-- Partitions should be temporary.
SELECT c.oid::pg_catalog.regclass, pg_catalog.pg_get_expr(c.relpartbound, c.oid), c.relpersistence
  FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i
  WHERE c.oid = i.inhrelid AND i.inhparent = 't'::regclass
  ORDER BY pg_catalog.pg_get_expr(c.relpartbound, c.oid) = 'DEFAULT', c.oid::pg_catalog.regclass::pg_catalog.text COLLATE "C";

DROP TABLE t;

-- Check the new partitions inherit parent's tablespace
CREATE TABLE t (i int PRIMARY KEY USING INDEX TABLESPACE regress_tblspace)
  PARTITION BY RANGE (i) TABLESPACE regress_tblspace;
CREATE TABLE tp_0_2 PARTITION OF t FOR VALUES FROM (0) TO (2);
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2));
SELECT tablename, tablespace FROM pg_tables
  WHERE tablename IN ('t', 'tp_0_1', 'tp_1_2') AND schemaname = 'partition_split_schema'
  ORDER BY tablename COLLATE "C", tablespace COLLATE "C";
SELECT tablename, indexname, tablespace FROM pg_indexes
  WHERE tablename IN ('t', 'tp_0_1', 'tp_1_2') AND schemaname = 'partition_split_schema'
  ORDER BY tablename COLLATE "C", indexname COLLATE "C", tablespace COLLATE "C";
DROP TABLE t;

-- Check new partitions inherits parent's table access method
CREATE ACCESS METHOD partition_split_heap TYPE TABLE HANDLER heap_tableam_handler;
CREATE TABLE t (i int) PARTITION BY RANGE (i) USING partition_split_heap;
CREATE TABLE tp_0_2 PARTITION OF t FOR VALUES FROM (0) TO (2);
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2));
SELECT c.relname, a.amname
FROM pg_class c JOIN pg_am a ON c.relam = a.oid
WHERE c.oid IN ('t'::regclass, 'tp_0_1'::regclass, 'tp_1_2'::regclass)
ORDER BY c.relname COLLATE "C";
DROP TABLE t;
DROP ACCESS METHOD partition_split_heap;

-- Split partition of a temporary table when one of the partitions after
-- split has the same name as the partition being split
CREATE TEMP TABLE t (a int) PARTITION BY RANGE (a);
CREATE TEMP TABLE tp_0 PARTITION OF t FOR VALUES FROM (0) TO (2);
ALTER TABLE t SPLIT PARTITION tp_0 INTO
  (PARTITION pg_temp.tp_0 FOR VALUES FROM (0) TO (1),
   PARTITION pg_temp.tp_1 FOR VALUES FROM (1) TO (2));
DROP TABLE t;

-- Check defaults and constraints of new partitions
CREATE TABLE t_bigint (
  b bigint,
  i int DEFAULT (3+10),
  j int DEFAULT 101,
  k int GENERATED ALWAYS AS (b+10) STORED
)
PARTITION BY RANGE (b);
CREATE TABLE t_bigint_default PARTITION OF t_bigint DEFAULT;
-- Show defaults/constraints before SPLIT PARTITION
\d+ t_bigint
\d+ t_bigint_default
ALTER TABLE t_bigint SPLIT PARTITION t_bigint_default INTO
  (PARTITION t_bigint_01_10 FOR VALUES FROM (0) TO (10),
   PARTITION t_bigint_default DEFAULT);
-- Show defaults/constraints after SPLIT PARTITION
\d+ t_bigint_default
\d+ t_bigint_01_10
DROP TABLE t_bigint;

-- Test permission checks.  The user needs to own the parent table and the
-- the partition to split to do the split.
CREATE ROLE regress_partition_split_alice;
CREATE ROLE regress_partition_split_bob;
GRANT ALL ON SCHEMA partition_split_schema TO regress_partition_split_alice;
GRANT ALL ON SCHEMA partition_split_schema TO regress_partition_split_bob;

SET SESSION AUTHORIZATION regress_partition_split_alice;
CREATE TABLE t (i int) PARTITION BY RANGE (i);
CREATE TABLE tp_0_2 PARTITION OF t FOR VALUES FROM (0) TO (2);

SET SESSION AUTHORIZATION regress_partition_split_bob;
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2)); --error
RESET SESSION AUTHORIZATION;

ALTER TABLE t OWNER TO regress_partition_split_bob;
SET SESSION AUTHORIZATION regress_partition_split_bob;
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2)); --error
RESET SESSION AUTHORIZATION;

ALTER TABLE tp_0_2 OWNER TO regress_partition_split_bob;
SET SESSION AUTHORIZATION regress_partition_split_bob;
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2)); --ok
RESET SESSION AUTHORIZATION;

DROP TABLE t;

-- Test: owner of new partitions should be the same as owner of split partition
CREATE TABLE t (i int) PARTITION BY RANGE (i);

SET SESSION AUTHORIZATION regress_partition_split_alice;
CREATE TABLE tp_0_2(i int);
RESET SESSION AUTHORIZATION;

ALTER TABLE t ATTACH PARTITION tp_0_2 FOR VALUES FROM (0) TO (2);

-- Owner is 'regress_partition_split_alice':
\dt tp_0_2

ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2));

-- Owner should be 'regress_partition_split_alice':
\dt tp_0_1
\dt tp_1_2

DROP TABLE t;

-- Test: index of new partitions should be created with same owner as split
-- partition
SET SESSION AUTHORIZATION regress_partition_split_alice;
CREATE TABLE t (i int) PARTITION BY RANGE (i);
CREATE TABLE tp_10_20 PARTITION OF t FOR VALUES FROM (10) TO (20);
INSERT INTO t VALUES (11), (16);
CREATE OR REPLACE FUNCTION run_me(integer) RETURNS integer AS $$
BEGIN
  RAISE NOTICE 'you are running me as %', CURRENT_USER;
  RETURN $1;
END
$$ LANGUAGE PLPGSQL IMMUTABLE;

-- Owner is 'regress_partition_split_alice':
CREATE INDEX ON t (run_me(i));
RESET SESSION AUTHORIZATION;

-- Owner should be 'regress_partition_split_alice':
ALTER TABLE t SPLIT PARTITION tp_10_20 INTO
  (PARTITION tp_10_15 FOR VALUES FROM (10) TO (15),
   PARTITION tp_15_20 FOR VALUES FROM (15) TO (20));

DROP TABLE t;
DROP FUNCTION run_me(integer);

REVOKE ALL ON SCHEMA partition_split_schema FROM regress_partition_split_alice;
REVOKE ALL ON SCHEMA partition_split_schema FROM regress_partition_split_bob;
DROP ROLE regress_partition_split_alice;
DROP ROLE regress_partition_split_bob;

-- Test for hash partitioned table
CREATE TABLE t (i int) PARTITION BY HASH(i);
CREATE TABLE tp1 PARTITION OF t FOR VALUES WITH (MODULUS 2, REMAINDER 0);
CREATE TABLE tp2 PARTITION OF t FOR VALUES WITH (MODULUS 2, REMAINDER 1);

-- ERROR:  partition of hash-partitioned table cannot be split
ALTER TABLE t SPLIT PARTITION tp1 INTO
  (PARTITION tp1_1 FOR VALUES WITH (MODULUS 4, REMAINDER 0),
   PARTITION tp1_2 FOR VALUES WITH (MODULUS 4, REMAINDER 2));

-- ERROR:  list of new partitions should contain at least two partitions
ALTER TABLE t SPLIT PARTITION tp1 INTO
  (PARTITION tp1_1 FOR VALUES WITH (MODULUS 4, REMAINDER 0));

DROP TABLE t;


-- Test for split partition properties:
-- * STATISTICS is empty
-- * COMMENT is empty
-- * DEFAULTS are the same as DEFAULTS for partitioned table
-- * STORAGE is the same as STORAGE for partitioned table
-- * GENERATED and CONSTRAINTS are the same as GENERATED and CONSTRAINTS for partitioned table
-- * TRIGGERS are the same as TRIGGERS for partitioned table

CREATE TABLE t
(i int NOT NULL,
 t text STORAGE EXTENDED COMPRESSION pglz DEFAULT 'default_t',
 b bigint,
 d date GENERATED ALWAYS as ('2022-01-01') STORED) PARTITION BY RANGE (abs(i));
COMMENT ON COLUMN t.i IS 't1.i';

CREATE TABLE tp_x
(i int NOT NULL,
 t text STORAGE MAIN DEFAULT 'default_tp_x',
 b bigint,
 d date GENERATED ALWAYS as ('2022-02-02') STORED);
ALTER TABLE t ATTACH PARTITION tp_x FOR VALUES FROM (0) TO (2);
COMMENT ON COLUMN tp_x.i IS 'tp_x.i';

CREATE STATISTICS t_stat (DEPENDENCIES) on i, b from t;
CREATE STATISTICS tp_x_stat (DEPENDENCIES) on i, b from tp_x;

ALTER TABLE t ADD CONSTRAINT t_b_check CHECK (b > 0);
ALTER TABLE t ADD CONSTRAINT t_b_check1 CHECK (b > 0) NOT ENFORCED;
ALTER TABLE t ADD CONSTRAINT t_b_check2 CHECK (b > 0) NOT VALID;
ALTER TABLE t ADD CONSTRAINT t_b_nn NOT NULL b NOT VALID;

INSERT INTO tp_x(i, t, b) VALUES(0, DEFAULT, 1);
INSERT INTO tp_x(i, t, b) VALUES(1, DEFAULT, 2);

CREATE OR REPLACE FUNCTION trigger_function() RETURNS trigger LANGUAGE 'plpgsql' AS
$BODY$
BEGIN
  RAISE NOTICE 'trigger(%) called: action = %, when = %, level = %', TG_ARGV[0], TG_OP, TG_WHEN, TG_LEVEL;
  RETURN new;
END;
$BODY$;

CREATE TRIGGER t_before_insert_row_trigger BEFORE INSERT ON t FOR EACH ROW
  EXECUTE PROCEDURE trigger_function('t');
CREATE TRIGGER tp_x_before_insert_row_trigger BEFORE INSERT ON tp_x FOR EACH ROW
  EXECUTE PROCEDURE trigger_function('tp_x');

\d+ tp_x
ALTER TABLE t SPLIT PARTITION tp_x INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_x FOR VALUES FROM (1) TO (2));
\d+ tp_x

INSERT INTO t(i, t, b) VALUES(1, DEFAULT, 3);
SELECT tableoid::regclass, * FROM t ORDER BY tableoid::regclass::text COLLATE "C", b;
DROP TABLE t;
DROP FUNCTION trigger_function();


-- Test for recomputation of stored generated columns.
CREATE TABLE t (i int, tab_id int generated always as (tableoid) stored) PARTITION BY RANGE (i);
CREATE TABLE tp_0_2 PARTITION OF t FOR VALUES FROM (0) TO (2);
ALTER TABLE t ADD CONSTRAINT cc CHECK(tableoid <> 123456789);
INSERT INTO t VALUES (0), (1);

-- Should be 1 because partition identifier for row with i=0 is the same as
-- partition identifier for row with i=1.
SELECT count(*) FROM t WHERE i = 0 AND tab_id IN (SELECT tab_id FROM t WHERE i = 1);

-- "tab_id" column (stored generated column) with "tableoid" attribute requires
-- recomputation here.
ALTER TABLE t SPLIT PARTITION tp_0_2 INTO
  (PARTITION tp_0_1 FOR VALUES FROM (0) TO (1),
   PARTITION tp_1_2 FOR VALUES FROM (1) TO (2));

-- Should be 0 because partition identifier for row with i=0 is different from
-- partition identifier for row with i=1.
SELECT count(*) FROM t WHERE i = 0 AND tab_id IN (SELECT tab_id FROM t WHERE i = 1);

DROP TABLE t;


RESET search_path;

--
DROP SCHEMA partition_split_schema;
DROP SCHEMA partition_split_schema2;
