SET datestyle = 'ISO';
CREATE SERVER http_loopback FOREIGN DATA WRAPPER clickhouse_fdw OPTIONS(dbname 'http_test', driver 'http');
CREATE SERVER http_loopback2 FOREIGN DATA WRAPPER clickhouse_fdw OPTIONS(dbname 'http_test');

CREATE USER MAPPING FOR CURRENT_USER SERVER http_loopback;
CREATE USER MAPPING FOR CURRENT_USER SERVER http_loopback2;

SELECT clickhouse_raw_query('DROP DATABASE IF EXISTS http_test');
SELECT clickhouse_raw_query('CREATE DATABASE http_test', '');
SELECT clickhouse_raw_query('CREATE TABLE http_test.t1
	(c1 Int, c2 Int, c3 String, c4 Date, c5 Date, c6 String, c7 String, c8 String)
	ENGINE = MergeTree PARTITION BY c4 ORDER BY (c1);
');
SELECT clickhouse_raw_query('CREATE TABLE http_test.t2 (c1 Int, c2 String)
	ENGINE = MergeTree PARTITION BY c1 % 10000 ORDER BY (c1);');
SELECT clickhouse_raw_query('CREATE TABLE http_test.t3 (c1 Int, c3 String)
	ENGINE = MergeTree PARTITION BY c1 % 10000 ORDER BY (c1);');
SELECT clickhouse_raw_query('CREATE TABLE http_test.t4 (c1 Int, c2 Int, c3 String, c4 Bool)
	ENGINE = MergeTree PARTITION BY c1 % 10000 ORDER BY (c1);');
SELECT clickhouse_raw_query('
	CREATE TABLE tcopy
		(c1 Int32, c2 Int64, c3 Date, c4 Nullable(DateTime), c5 DateTime, c6 String)
	ENGINE = MergeTree
	PARTITION BY c3
	ORDER BY (c1, c2, c3);
', 'dbname=http_test');

CREATE FOREIGN TABLE ft1 (
	c0 int,
	c1 int NOT NULL,
	c2 int NOT NULL,
	c3 text,
	c4 date,
	c5 date,
	c6 varchar(10),
	c7 char(10) default 'ft1',
	c8 text
) SERVER http_loopback OPTIONS (table_name 't1');

ALTER FOREIGN TABLE ft1 DROP COLUMN c0;

CREATE FOREIGN TABLE ft2 (
	c1 int NOT NULL,
	c2 text NOT NULL
) SERVER http_loopback OPTIONS (table_name 't2');

CREATE FOREIGN TABLE ft3 (
	c1 int NOT NULL,
	c3 text
) SERVER http_loopback OPTIONS (table_name 't3');

CREATE FOREIGN TABLE ft4 (
	c1 int NOT NULL,
	c2 int NOT NULL,
	c3 text,
	c4 bool
) SERVER http_loopback OPTIONS (table_name 't4');

CREATE FOREIGN TABLE ft5 (
	c1 int NOT NULL,
	c2 int NOT NULL,
	c3 text,
	c4 bool
) SERVER http_loopback OPTIONS (table_name 't4');

CREATE FOREIGN TABLE ft6 (
	c1 int NOT NULL,
	c2 int NOT NULL,
	c3 text,
	c4 bool
) SERVER http_loopback2 OPTIONS (table_name 't4');

CREATE FOREIGN TABLE ftcopy (
	c1 int,
	c2 int8,
	c3 date,
	c4 timestamp without time zone,
	c5 time,
	c6 text
) SERVER http_loopback OPTIONS (table_name 'tcopy');

INSERT INTO ft1
	SELECT id,
	       id % 10,
	       to_char(id, 'FM00000'),
	       '1990-01-01',
	       '1990-01-01',
	       id % 10,
	       id % 10,
	       'foo'
	FROM generate_series(1, 110) id;

INSERT INTO ft2
	SELECT id,
	       'AAA' || to_char(id, 'FM000')
	FROM generate_series(1, 100) id;

INSERT INTO ft3 VALUES (1, E'lf\ntab\t\b\f\r');
SELECT c3, (c3 = E'lf\ntab\t\b\f\r') AS true FROM ft3 WHERE c1 = 1;
INSERT INTO ft3 VALUES (2, 'lf\ntab\t\b\f\r');
SELECT c3, (c3 = 'lf\ntab\t\b\f\r') AS true FROM ft3 WHERE c1 = 2;
INSERT INTO ft3 VALUES (3, '');
SELECT c3, (c3 = '') AS true FROM ft3 WHERE c1 = 3;

INSERT INTO ft4
	SELECT id,
	       id + 1,
	       'AAA' || to_char(id, 'FM000'),
		   (id % 2)::bool
	FROM generate_series(1, 100) id;

SELECT * FROM ft5 ORDER BY c1 LIMIT 5;

COPY ftcopy FROM stdin;
1	2	1990-01-01	1990-01-01 10:01:02	10:01:02	val1
2	3	1990-02-02	1990-02-02 11:02:03	11:01:02	val2
\.

COPY ftcopy (c1, c2, c3, c4, c5, c6) FROM stdin;
\.

INSERT INTO ftcopy VALUES
	(3, 4, '1990-03-03', '1990-03-03 12:02:02', '12:02:02', 'val3'),
	(4, 5, '1991-04-04', '1990-04-04 12:04:04', '12:02:04', 'val4'),
	(5, 6, '1991-04-04', NULL, '12:02:05', 'val5');

EXPLAIN (VERBOSE) SELECT * FROM ftcopy ORDER BY c1;
SELECT * FROM ftcopy ORDER BY c1;

SELECT c3, c4 FROM ft1 ORDER BY c3, c1 LIMIT 1;  -- should work

ALTER SERVER http_loopback OPTIONS (SET dbname 'no such database');

SELECT c3, c4 FROM ft1 ORDER BY c3, c1;  -- should fail

ALTER USER MAPPING FOR CURRENT_USER SERVER http_loopback OPTIONS (ADD user 'no such user');

SELECT c3, c4 FROM ft1 ORDER BY c3, c1;  -- should fail

ALTER SERVER http_loopback OPTIONS (SET dbname 'http_test');
ALTER USER MAPPING FOR CURRENT_USER SERVER http_loopback OPTIONS (DROP user);

SELECT c3, c4 FROM ft1 ORDER BY c3, c1 LIMIT 1;  -- should work again

ANALYZE ft1;

EXPLAIN (COSTS OFF) SELECT * FROM ft1 ORDER BY c3, c1 OFFSET 100 LIMIT 10;
SELECT * FROM ft1 ORDER BY c3, c1 OFFSET 100 LIMIT 10;

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 ORDER BY t1.c3, t1.c1, t1.tableoid OFFSET 100 LIMIT 10;

SELECT * FROM ft1 t1 ORDER BY t1.c3, t1.c1, t1.tableoid OFFSET 100 LIMIT 10;

EXPLAIN (VERBOSE, COSTS OFF) SELECT t1 FROM ft1 t1 ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10;

SELECT t1 FROM ft1 t1 ORDER BY t1.c3, t1.c1 OFFSET 100 LIMIT 10;

SELECT * FROM ft1 WHERE false;

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE t1.c1 = 101 AND t1.c6 = '1' AND t1.c7 >= '1';

SELECT COUNT(*) FROM ft1 t1;

SELECT * FROM ft1 t1 WHERE t1.c3 IN (SELECT c2 FROM ft2 t2 WHERE c1 <= 10) ORDER BY c1;

EXPLAIN (VERBOSE, COSTS OFF)
SELECT * FROM ft1 t1 WHERE t1.c3 = (SELECT MAX(c2) FROM ft2 t2) ORDER BY c1;
SELECT * FROM ft1 t1 WHERE t1.c3 = (SELECT MAX(c2) FROM ft2 t2) ORDER BY c1;

WITH t1 AS (SELECT * FROM ft1 WHERE c1 <= 10) SELECT t2.c1, t2.c2, t2.c2 FROM t1, ft2 t2 WHERE t1.c1 = t2.c1 ORDER BY t1.c1;

SELECT 'fixed', NULL FROM ft1 t1 WHERE c1 = 1;

SET enable_hashjoin TO false;

SET enable_nestloop TO false;

EXPLAIN (VERBOSE, COSTS OFF) SELECT t1.c1, t2.c1 FROM ft2 t1 JOIN ft1 t2 ON (t1.c1 = t2.c1) OFFSET 100 LIMIT 10;

SELECT DISTINCT t1.c1, t2.c1 FROM ft2 t1 JOIN ft1 t2 ON (t1.c1 = t2.c1) order by t1.c1 LIMIT 10;

EXPLAIN (VERBOSE, COSTS OFF) SELECT t1.c1, t2.c1 FROM ft2 t1 LEFT JOIN ft1 t2 ON (t1.c1 = t2.c1) OFFSET 100 LIMIT 10;

EXPLAIN SELECT DISTINCT t1.c1, t2.c1 FROM ft2 t1 LEFT JOIN ft1 t2 ON (t1.c1 = t2.c1) order by t1.c1 LIMIT 10;
SELECT DISTINCT t1.c1, t2.c1 FROM ft2 t1 LEFT JOIN ft1 t2 ON (t1.c1 = t2.c1) order by t1.c1 LIMIT 10;

RESET enable_hashjoin;
RESET enable_nestloop;

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE t1.c1 = 1;         -- Var, OpExpr(b), Const

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE t1.c1 = 100 AND t1.c2 = 0; -- BoolExpr

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 IS NULL;        -- NullTest

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 IS NOT NULL;    -- NullTest

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE round(abs(c1), 0) = 1; -- FuncExpr

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 = -c1;          -- OpExpr(l)

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE 1 = factorial(c1);           -- OpExpr(r)

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE (c1 IS NOT NULL) IS DISTINCT FROM (c1 IS NOT NULL); -- DistinctExpr

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 = ANY(ARRAY[c2, 1, c1 + 0]); -- ScalarArrayOpExpr

SELECT * FROM ft1 t1 WHERE c1 = ANY(ARRAY[c2, 1, c1 + 0]) ORDER BY c1; -- ScalarArrayOpExpr

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c1 = (ARRAY[c1,c2,3])[1]; -- ArrayRef

SELECT * FROM ft1 t1 WHERE c1 = (ARRAY[c1,c2,3])[1] ORDER BY c1; -- ArrayRef

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c6 = E'foo''s\\bar';  -- check special chars

EXPLAIN (VERBOSE, COSTS OFF) SELECT * FROM ft1 t1 WHERE c8 = 'foo';  -- can't be sent to remote

EXPLAIN (VERBOSE, COSTS OFF) SELECT (CASE WHEN c1 < 10 THEN 1 WHEN c1 < 50 THEN 2 ELSE 3 END) a,
	sum(length(c2)) FROM ft2 GROUP BY a ORDER BY a;
SELECT (CASE WHEN c1 < 10 THEN 1 WHEN c1 < 50 THEN 2 ELSE 3 END) a,
	sum(length(c2)) FROM ft2 GROUP BY a ORDER BY a;

EXPLAIN (VERBOSE, COSTS OFF) SELECT SUM(c1) FILTER (WHERE c1 < 20) FROM ft2;
SELECT SUM(c1) FILTER (WHERE c1 < 20) FROM ft2;

EXPLAIN (VERBOSE, COSTS OFF) SELECT COUNT(DISTINCT c1) FROM ft2;
SELECT COUNT(DISTINCT c1) FROM ft2;

/* DISTINCT with IF */
EXPLAIN (VERBOSE, COSTS OFF) SELECT COUNT(DISTINCT c1) FILTER (WHERE c1 < 20) FROM ft2;

DROP USER MAPPING FOR CURRENT_USER SERVER http_loopback2;
DROP USER MAPPING FOR CURRENT_USER SERVER http_loopback;
SELECT clickhouse_raw_query('DROP DATABASE http_test');
DROP SERVER http_loopback2 CASCADE;
DROP SERVER http_loopback CASCADE;
