-- This file and its contents are licensed under the Apache License 2.0.
-- Please see the included NOTICE for copyright information and
-- LICENSE-APACHE for a copy of the license.

CREATE TABLE index_test(time timestamptz, temp float);

SELECT create_hypertable('index_test', 'time');

-- Default indexes created
SELECT * FROM test.show_indexes('index_test');

DROP TABLE index_test;
CREATE TABLE index_test(time timestamptz, device integer, temp float);

-- Create index before create_hypertable()
CREATE UNIQUE INDEX index_test_time_idx ON index_test (time);

\set ON_ERROR_STOP 0
-- Creating a hypertable from a table with an index that doesn't cover
-- all partitioning columns should fail
SELECT create_hypertable('index_test', 'time', 'device', 2);
\set ON_ERROR_STOP 1

-- Partitioning on only time should work
SELECT create_hypertable('index_test', 'time');

INSERT INTO index_test VALUES ('2017-01-20T09:00:01', 1, 17.5);

-- Check that index is also created on chunk
SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

-- Create another chunk
INSERT INTO index_test VALUES ('2017-05-20T09:00:01', 3, 17.5);

SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

-- Delete the index on only one chunk
DROP INDEX _timescaledb_internal._hyper_3_1_chunk_index_test_time_idx;
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

-- Recreate table with new partitioning
DROP TABLE index_test;
CREATE TABLE index_test(id serial, time timestamptz, device integer, temp float);
SELECT * FROM test.show_columns('index_test');

-- Test that we can handle difference in attnos across hypertable and
-- chunks by dropping the ID column
ALTER TABLE index_test DROP COLUMN id;
SELECT * FROM test.show_columns('index_test');

-- No pre-existing UNIQUE index, so partitioning on two columns should work
SELECT create_hypertable('index_test', 'time', 'device', 2);

INSERT INTO index_test VALUES ('2017-01-20T09:00:01', 1, 17.5);

\set ON_ERROR_STOP 0
-- Create unique index without all partitioning columns should fail
CREATE UNIQUE INDEX index_test_time_device_idx ON index_test (time);
\set ON_ERROR_STOP 1

CREATE UNIQUE INDEX index_test_time_device_idx ON index_test (time, device);

-- Regular index need not cover all partitioning columns
CREATE INDEX ON index_test (time, temp);

-- Create another chunk
INSERT INTO index_test VALUES ('2017-04-20T09:00:01', 1, 17.5);

-- New index should have been recursed to chunks
SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

ALTER INDEX index_test_time_idx RENAME TO index_test_time_idx2;

-- Metadata and index should have changed name
SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

DROP INDEX index_test_time_idx2;
DROP INDEX index_test_time_device_idx;

-- Index should have been dropped
SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

-- Create index with long name to see how this is handled on chunks
CREATE INDEX a_hypertable_index_with_a_very_very_long_name_that_truncates ON index_test (time, temp);
CREATE INDEX a_hypertable_index_with_a_very_very_long_name_that_truncates_2 ON index_test (time, temp);

SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');

DROP INDEX a_hypertable_index_with_a_very_very_long_name_that_truncates;
DROP INDEX a_hypertable_index_with_a_very_very_long_name_that_truncates_2;

\set ON_ERROR_STOP 0
-- Create index CONCURRENTLY
CREATE UNIQUE INDEX CONCURRENTLY index_test_time_device_idx ON index_test (time, device);
\set ON_ERROR_STOP 1

-- Test tablespaces. Chunk indexes should end up in same tablespace as
-- main index.
\c :TEST_DBNAME :ROLE_SUPERUSER
SET client_min_messages = ERROR;
DROP TABLESPACE IF EXISTS tablespace1;
DROP TABLESPACE IF EXISTS tablespace2;
SET client_min_messages = NOTICE;

CREATE TABLESPACE tablespace1 OWNER :ROLE_DEFAULT_PERM_USER LOCATION :TEST_TABLESPACE1_PATH;
\c :TEST_DBNAME :ROLE_DEFAULT_PERM_USER
CREATE INDEX index_test_time_idx ON index_test (time) TABLESPACE tablespace1;

SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');

\c :TEST_DBNAME :ROLE_SUPERUSER
CREATE TABLESPACE tablespace2 OWNER :ROLE_DEFAULT_PERM_USER LOCATION :TEST_TABLESPACE2_PATH;
\c :TEST_DBNAME :ROLE_DEFAULT_PERM_USER
ALTER INDEX index_test_time_idx SET TABLESPACE tablespace2;

SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');

-- Add constraint index
ALTER TABLE index_test ADD UNIQUE (time, device);

SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');

-- Constraint indexes are added to chunk_index table.
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;
SELECT * FROM _timescaledb_catalog.chunk_constraint;

DROP TABLE index_test;

-- Metadata removed
SELECT * FROM _timescaledb_catalog.chunk_index ORDER BY index_name, hypertable_index_name;

-- Create table in a tablespace
CREATE TABLE index_test(time timestamptz, temp float, device int) TABLESPACE tablespace1;

-- Default indexes should be in the table's tablespace
SELECT create_hypertable('index_test', 'time');

-- Explicitly defining an index tablespace should work and propagate
-- to chunks
CREATE INDEX ON index_test (time, device) TABLESPACE tablespace2;

-- New indexes without explicit tablespaces should use the default
-- tablespace
CREATE INDEX ON index_test (device);

-- Create chunk
INSERT INTO index_test VALUES ('2017-01-20T09:00:01', 17.5);

-- Check that the tablespaces of chunk indexes match the tablespace of
-- the main index
SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');

-- Creating a new index should propagate to existing chunks, including
-- the given tablespace
CREATE INDEX ON index_test (time, temp) TABLESPACE tablespace2;

SELECT * FROM test.show_indexes('index_test');
SELECT * FROM test.show_indexesp('_timescaledb_internal._hyper%_chunk');

-- Cleanup
DROP TABLE index_test CASCADE;
\c :TEST_DBNAME :ROLE_SUPERUSER
DROP TABLESPACE tablespace1;
DROP TABLESPACE tablespace2;

-- Test expression indexes
CREATE TABLE index_expr_test(id serial, time timestamptz, temp float, meta jsonb);

-- Screw up the attribute numbers
ALTER TABLE index_expr_test DROP COLUMN id;

CREATE INDEX ON index_expr_test ((meta ->> 'field')) ;
INSERT INTO index_expr_test VALUES ('2017-01-20T09:00:01', 17.5, '{"field": "value1"}');
INSERT INTO index_expr_test VALUES ('2017-01-20T09:00:01', 17.5, '{"field": "value2"}');

EXPLAIN (verbose, costs off)
SELECT * FROM index_expr_test WHERE meta ->> 'field' = 'value1';
SELECT * FROM index_expr_test WHERE meta ->> 'field' = 'value1';

-- Test INDEX DROP error for multiple objects
CREATE TABLE index_test(time timestamptz, temp float);
CREATE UNIQUE INDEX index_test_idx ON index_test (time, temp);
SELECT create_hypertable('index_test', 'time');

CREATE TABLE index_test_2(time timestamptz, temp float);
CREATE UNIQUE INDEX index_test_2_idx ON index_test_2 (time, temp);

\set ON_ERROR_STOP 0
DROP INDEX index_test_idx, index_test_2_idx;
\set ON_ERROR_STOP 1

-- test expression index with dropped columns
CREATE TABLE idx_expr_test(filler int, time timestamptz, meta text);
SELECT table_name FROM create_hypertable('idx_expr_test', 'time');
ALTER TABLE idx_expr_test DROP COLUMN filler;
CREATE INDEX tag_idx ON idx_expr_test(('foo'||meta));
INSERT INTO idx_expr_test(time, meta) VALUES ('2000-01-01', 'bar');
DROP TABLE idx_expr_test CASCADE;

-- test multicolumn expression index with dropped columns
CREATE TABLE idx_expr_test(filler int, time timestamptz, t1 text, t2 text, t3 text);
SELECT table_name FROM create_hypertable('idx_expr_test', 'time');
ALTER TABLE idx_expr_test DROP COLUMN filler;
CREATE INDEX tag_idx ON idx_expr_test((t1||t2||t3));
INSERT INTO idx_expr_test(time, t1, t2, t3) VALUES ('2000-01-01', 'foo', 'bar', 'baz');
DROP TABLE idx_expr_test CASCADE;

-- test index with predicate and dropped columns
CREATE TABLE idx_predicate_test(filler int, time timestamptz);
SELECT table_name FROM create_hypertable('idx_predicate_test', 'time');
ALTER TABLE idx_predicate_test DROP COLUMN filler;
ALTER TABLE idx_predicate_test ADD COLUMN b1 bool;
CREATE INDEX idx_predicate_test_b1 ON idx_predicate_test(b1) WHERE b1=true;
INSERT INTO idx_predicate_test VALUES ('2000-01-01',true);
DROP TABLE idx_predicate_test;

-- test index with table references
CREATE TABLE idx_tableref_test(time timestamptz);
SELECT table_name FROM create_hypertable('idx_tableref_test', 'time');
-- we use security definer to prevent function inlining
CREATE OR REPLACE FUNCTION tableref_func(t idx_tableref_test) RETURNS timestamptz LANGUAGE SQL IMMUTABLE SECURITY DEFINER AS $f$ SELECT t.time; $f$;
-- try creating index with no existing chunks
CREATE INDEX tableref_idx ON idx_tableref_test(tableref_func(idx_tableref_test));
-- insert data to trigger chunk creation
INSERT INTO idx_tableref_test SELECT '2000-01-01';
DROP INDEX tableref_idx;
-- try creating index on hypertable with existing chunks
CREATE INDEX tableref_idx ON idx_tableref_test(tableref_func(idx_tableref_test));

-- test index creation with if not exists
CREATE TABLE idx_exists(time timestamptz NOT NULL);
SELECT table_name FROM create_hypertable('idx_exists', 'time');
-- should be skipped since this index was already created by create_hypertable
CREATE INDEX IF NOT EXISTS idx_exists_time_idx ON idx_exists(time DESC);
-- should create index
CREATE INDEX IF NOT EXISTS idx_exists_time_asc_idx ON idx_exists(time ASC);
-- should be skipped since it was created in previous command
CREATE INDEX IF NOT EXISTS idx_exists_time_asc_idx ON idx_exists(time ASC);
DROP INDEX idx_exists_time_asc_idx;

INSERT INTO idx_exists VALUES ('2000-01-01'),('2001-01-01');
-- should create index
CREATE INDEX IF NOT EXISTS idx_exists_time_asc_idx ON idx_exists(time ASC);
-- should be skipped since it was created in previous command
CREATE INDEX IF NOT EXISTS idx_exists_time_asc_idx ON idx_exists(time ASC);

-- test reindex
CREATE TABLE reindex_test(time timestamp, temp float, PRIMARY KEY(time, temp));
CREATE UNIQUE INDEX reindex_test_time_unique_idx ON reindex_test(time);

-- create hypertable with three chunks
SELECT create_hypertable('reindex_test', 'time', chunk_time_interval => 2628000000000);

INSERT INTO reindex_test VALUES ('2017-01-20T09:00:01', 17.5),
                                ('2017-01-21T09:00:01', 19.1),
                                ('2017-04-20T09:00:01', 89.5),
                                ('2017-04-21T09:00:01', 17.1),
                                ('2017-06-20T09:00:01', 18.5),
                                ('2017-06-21T09:00:01', 11.0);

SELECT * FROM test.show_columns('reindex_test');
SELECT * FROM test.show_subtables('reindex_test');

-- show reindexing
REINDEX (VERBOSE) TABLE reindex_test;

\set ON_ERROR_STOP 0

-- REINDEX TABLE CONCURRENTLY is not supported on PG11 (but blocked on PG12+)
REINDEX TABLE CONCURRENTLY reindex_test;

-- this one currently doesn't recurse to chunks and instead gives an
-- error
REINDEX (VERBOSE) INDEX reindex_test_time_unique_idx;
\set ON_ERROR_STOP 1

-- show reindexing on a normal table
CREATE TABLE reindex_norm(time timestamp, temp float);
CREATE UNIQUE INDEX reindex_norm_time_unique_idx ON reindex_norm(time);

INSERT INTO reindex_norm VALUES ('2017-01-20T09:00:01', 17.5),
                                ('2017-01-21T09:00:01', 19.1),
                                ('2017-04-20T09:00:01', 89.5),
                                ('2017-04-21T09:00:01', 17.1),
                                ('2017-06-20T09:00:01', 18.5),
                                ('2017-06-21T09:00:01', 11.0);

REINDEX (VERBOSE) TABLE reindex_norm;
REINDEX (VERBOSE) INDEX reindex_norm_time_unique_idx;

SELECT * FROM test.show_constraintsp('_timescaledb_internal._hyper_12%');
SELECT * FROM reindex_norm;

SELECT * FROM test.show_indexes('_timescaledb_internal._hyper_12_12_chunk');
SELECT chunk_index_clone::regclass::text
FROM _timescaledb_internal.chunk_index_clone('_timescaledb_internal."12_3_reindex_test_pkey"'::regclass);
SELECT * FROM test.show_indexes('_timescaledb_internal._hyper_12_12_chunk');
SELECT * FROM _timescaledb_internal.chunk_index_replace('_timescaledb_internal."12_3_reindex_test_pkey"'::regclass, '_timescaledb_internal."_hyper_12_12_chunk_12_3_reindex_test_pkey"'::regclass);

SELECT * FROM test.show_indexes('_timescaledb_internal._hyper_12_12_chunk');

CREATE TABLE ht_dropped(time timestamptz, d0 int, d1 int, c0 int, c1 int, c2 int);
SELECT create_hypertable('ht_dropped','time');
INSERT INTO ht_dropped(time,c0,c1,c2) SELECT '2000-01-01',1,2,3;
ALTER TABLE ht_dropped DROP COLUMN d0;
INSERT INTO ht_dropped(time,c0,c1,c2) SELECT '2001-01-01',1,2,3;
ALTER TABLE ht_dropped DROP COLUMN d1;
INSERT INTO ht_dropped(time,c0,c1,c2) SELECT '2002-01-01',1,2,3;

CREATE INDEX ON ht_dropped(c0,c1,c2) WHERE c1 IS NOT NULL;
CREATE INDEX ON ht_dropped(c0,c1,c2) WITH(timescaledb.transaction_per_chunk) WHERE c2 IS NOT NULL;

SELECT
  oid::TEXT AS "Chunk",
  i.*
FROM
  (SELECT tableoid::REGCLASS FROM ht_dropped GROUP BY tableoid) ch (oid)
  LEFT JOIN LATERAL ( SELECT * FROM test.show_indexes (ch.oid)) i ON TRUE
ORDER BY
  1, 2;

-- #3056 check chunk index column name mapping
CREATE TABLE i3056(c int, order_number int NOT NULL, date_created timestamptz NOT NULL);
CREATE INDEX ON i3056(order_number) INCLUDE(order_number);
CREATE INDEX ON i3056(date_created, (order_number % 5)) INCLUDE(order_number);
SELECT table_name FROM create_hypertable('i3056', 'date_created');
ALTER TABLE i3056 DROP COLUMN c;
INSERT INTO i3056(order_number,date_created) VALUES (1, '2000-01-01');