postgresql/src/test/regress/expected/sqljson_queryfuncs.out

-- JSON_EXISTS
SELECT JSON_EXISTS(NULL::jsonb, '$');
 json_exists 
-------------
 
(1 row)

SELECT JSON_EXISTS(jsonb '[]', '$');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(JSON_OBJECT(RETURNING jsonb), '$');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '1', '$');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb 'null', '$');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '[]', '$');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '1', '$.a');
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '1', 'strict $.a'); -- FALSE on error
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '1', 'strict $.a' ERROR ON ERROR);
ERROR:  jsonpath member accessor can only be applied to an object
SELECT JSON_EXISTS(jsonb 'null', '$.a');
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '[]', '$.a');
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '[1, "aaa", {"a": 1}]', 'strict $.a'); -- FALSE on error
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '[1, "aaa", {"a": 1}]', 'lax $.a');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '{}', '$.a');
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '{"b": 1, "a": 2}', '$.a');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '1', '$.a.b');
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '{"a": {"b": 1}}', '$.a.b');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.a.b');
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x)' PASSING 1 AS x);
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x)' PASSING '1' AS x);
 json_exists 
-------------
 f
(1 row)

SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x && @ < $y)' PASSING 0 AS x, 2 AS y);
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '{"a": 1, "b": 2}', '$.* ? (@ > $x && @ < $y)' PASSING 0 AS x, 1 AS y);
 json_exists 
-------------
 f
(1 row)

-- extension: boolean expressions
SELECT JSON_EXISTS(jsonb '1', '$ > 2');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_EXISTS(jsonb '1', '$.a > 2' ERROR ON ERROR);
 json_exists 
-------------
 t
(1 row)

-- JSON_VALUE
SELECT JSON_VALUE(NULL::jsonb, '$');
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$');
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$' RETURNING int);
 json_value 
------------
           
(1 row)

SELECT JSON_VALUE(jsonb 'true', '$');
 json_value 
------------
 t
(1 row)

SELECT JSON_VALUE(jsonb 'true', '$' RETURNING bool);
 json_value 
------------
 t
(1 row)

SELECT JSON_VALUE(jsonb '123', '$');
 json_value 
------------
 123
(1 row)

SELECT JSON_VALUE(jsonb '123', '$' RETURNING int) + 234;
 ?column? 
----------
      357
(1 row)

SELECT JSON_VALUE(jsonb '123', '$' RETURNING text);
 json_value 
------------
 123
(1 row)

/* jsonb bytea ??? */
SELECT JSON_VALUE(jsonb '123', '$' RETURNING bytea ERROR ON ERROR);
 json_value 
------------
 \x313233
(1 row)

SELECT JSON_VALUE(jsonb '1.23', '$');
 json_value 
------------
 1.23
(1 row)

SELECT JSON_VALUE(jsonb '1.23', '$' RETURNING int);
 json_value 
------------
           
(1 row)

SELECT JSON_VALUE(jsonb '"1.23"', '$' RETURNING numeric);
 json_value 
------------
       1.23
(1 row)

SELECT JSON_VALUE(jsonb '"1.23"', '$' RETURNING int ERROR ON ERROR);
ERROR:  invalid input syntax for type integer: "1.23"
SELECT JSON_VALUE(jsonb '"aaa"', '$');
 json_value 
------------
 aaa
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING text);
 json_value 
------------
 aaa
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING char(5));
 json_value 
------------
 aaa  
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING char(2));
 json_value 
------------
 aa
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING json);
 json_value 
------------
 "aaa"
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING jsonb);
 json_value 
------------
 "aaa"
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING json ERROR ON ERROR);
 json_value 
------------
 "aaa"
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING jsonb ERROR ON ERROR);
 json_value 
------------
 "aaa"
(1 row)

SELECT JSON_VALUE(jsonb '"\"aaa\""', '$' RETURNING json);
 json_value 
------------
 "\"aaa\""
(1 row)

SELECT JSON_VALUE(jsonb '"\"aaa\""', '$' RETURNING jsonb);
 json_value 
------------
 "\"aaa\""
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int);
 json_value 
------------
           
(1 row)

SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int ERROR ON ERROR);
ERROR:  invalid input syntax for type integer: "aaa"
SELECT JSON_VALUE(jsonb '"aaa"', '$' RETURNING int DEFAULT 111 ON ERROR);
 json_value 
------------
        111
(1 row)

SELECT JSON_VALUE(jsonb '"123"', '$' RETURNING int) + 234;
 ?column? 
----------
      357
(1 row)

SELECT JSON_VALUE(jsonb '"2017-02-20"', '$' RETURNING date) + 9;
  ?column?  
------------
 03-01-2017
(1 row)

-- Test NULL checks execution in domain types
CREATE DOMAIN sqljsonb_int_not_null AS int NOT NULL;
SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null);
 json_value 
------------
           
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null ERROR ON ERROR);
ERROR:  domain sqljsonb_int_not_null does not allow null values
SELECT JSON_VALUE(jsonb 'null', '$' RETURNING sqljsonb_int_not_null DEFAULT 2 ON EMPTY ERROR ON ERROR);
ERROR:  domain sqljsonb_int_not_null does not allow null values
SELECT JSON_VALUE(jsonb '1',  '$.a' RETURNING sqljsonb_int_not_null DEFAULT 2 ON EMPTY ERROR ON ERROR);
 json_value 
------------
          2
(1 row)

SELECT JSON_VALUE(jsonb '1',  '$.a' RETURNING sqljsonb_int_not_null DEFAULT NULL ON EMPTY ERROR ON ERROR);
ERROR:  domain sqljsonb_int_not_null does not allow null values
CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple');
CREATE DOMAIN rgb AS rainbow CHECK (VALUE IN ('red', 'green', 'blue'));
SELECT JSON_VALUE('"purple"'::jsonb, 'lax $[*]' RETURNING rgb);
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE('"purple"'::jsonb, 'lax $[*]' RETURNING rgb ERROR ON ERROR);
ERROR:  value for domain rgb violates check constraint "rgb_check"
SELECT JSON_VALUE(jsonb '[]', '$');
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE(jsonb '[]', '$' ERROR ON ERROR);
ERROR:  JSON path expression in JSON_VALUE should return singleton scalar item
SELECT JSON_VALUE(jsonb '{}', '$');
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE(jsonb '{}', '$' ERROR ON ERROR);
ERROR:  JSON path expression in JSON_VALUE should return singleton scalar item
SELECT JSON_VALUE(jsonb '1', '$.a');
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE(jsonb '1', 'strict $.a' ERROR ON ERROR);
ERROR:  jsonpath member accessor can only be applied to an object
SELECT JSON_VALUE(jsonb '1', 'strict $.a' DEFAULT 'error' ON ERROR);
 json_value 
------------
 error
(1 row)

SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON EMPTY ERROR ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_VALUE(jsonb '1', 'strict $.a' DEFAULT 2 ON ERROR);
 json_value 
------------
 2
(1 row)

SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT 2 ON ERROR);
 json_value 
------------
 2
(1 row)

SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT '2' ON ERROR);
 json_value 
------------
 2
(1 row)

SELECT JSON_VALUE(jsonb '1', 'lax $.a' NULL ON EMPTY DEFAULT '2' ON ERROR);
 json_value 
------------
 
(1 row)

SELECT JSON_VALUE(jsonb '1', 'lax $.a' DEFAULT '2' ON EMPTY DEFAULT '3' ON ERROR);
 json_value 
------------
 2
(1 row)

SELECT JSON_VALUE(jsonb '1', 'lax $.a' ERROR ON EMPTY DEFAULT '3' ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_VALUE(jsonb '[1,2]', '$[*]' ERROR ON ERROR);
ERROR:  JSON path expression in JSON_VALUE should return singleton scalar item
SELECT JSON_VALUE(jsonb '[1,2]', '$[*]' DEFAULT '0' ON ERROR);
 json_value 
------------
 0
(1 row)

SELECT JSON_VALUE(jsonb '[" "]', '$[*]' RETURNING int ERROR ON ERROR);
ERROR:  invalid input syntax for type integer: " "
SELECT JSON_VALUE(jsonb '[" "]', '$[*]' RETURNING int DEFAULT 2 + 3 ON ERROR);
 json_value 
------------
          5
(1 row)

SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int DEFAULT 2 + 3 ON ERROR);
 json_value 
------------
          1
(1 row)

SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int FORMAT JSON); -- RETURNING FORMAT not allowed
ERROR:  cannot specify FORMAT JSON in RETURNING clause of JSON_VALUE()
LINE 1: ...CT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING int FORMAT JSO...
                                                             ^
-- RETUGNING pseudo-types not allowed
SELECT JSON_VALUE(jsonb '["1"]', '$[*]' RETURNING record);
ERROR:  returning pseudo-types is not supported in SQL/JSON functions
SELECT
	x,
	JSON_VALUE(
		jsonb '{"a": 1, "b": 2}',
		'$.* ? (@ > $x)' PASSING x AS x
		RETURNING int
		DEFAULT -1 ON EMPTY
		DEFAULT -2 ON ERROR
	) y
FROM
	generate_series(0, 2) x;
 x | y  
---+----
 0 | -2
 1 |  2
 2 | -1
(3 rows)

SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a);
 json_value 
------------
 (1,2)
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a RETURNING point);
 json_value 
------------
 (1,2)
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$a' PASSING point ' (1, 2 )' AS a RETURNING point ERROR ON ERROR);
 json_value 
------------
 (1,2)
(1 row)

-- Test PASSING and RETURNING date/time types
SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts);
          json_value          
------------------------------
 Tue Feb 20 18:34:56 2018 PST
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING timestamptz);
          json_value          
------------------------------
 Tue Feb 20 18:34:56 2018 PST
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING timestamp);
        json_value        
--------------------------
 Tue Feb 20 18:34:56 2018
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING date '2018-02-21 12:34:56 +10' AS ts RETURNING date);
 json_value 
------------
 02-21-2018
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING time '2018-02-21 12:34:56 +10' AS ts RETURNING time);
 json_value 
------------
 12:34:56
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timetz '2018-02-21 12:34:56 +10' AS ts RETURNING timetz);
 json_value  
-------------
 12:34:56+10
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamp '2018-02-21 12:34:56 +10' AS ts RETURNING timestamp);
        json_value        
--------------------------
 Wed Feb 21 12:34:56 2018
(1 row)

-- Also test RETURNING json[b]
SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING json);
         json_value          
-----------------------------
 "2018-02-21T02:34:56+00:00"
(1 row)

SELECT JSON_VALUE(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING jsonb);
         json_value          
-----------------------------
 "2018-02-21T02:34:56+00:00"
(1 row)

-- Test that numeric JSON values are coerced uniformly
select json_value('{"a": 1.234}', '$.a' returning int error on error);
ERROR:  invalid input syntax for type integer: "1.234"
select json_value('{"a": "1.234"}', '$.a' returning int error on error);
ERROR:  invalid input syntax for type integer: "1.234"
-- JSON_QUERY
SELECT JSON_VALUE(NULL::jsonb, '$');
 json_value 
------------
 
(1 row)

SELECT
	JSON_QUERY(js, '$'),
	JSON_QUERY(js, '$' WITHOUT WRAPPER),
	JSON_QUERY(js, '$' WITH CONDITIONAL WRAPPER),
	JSON_QUERY(js, '$' WITH UNCONDITIONAL ARRAY WRAPPER),
	JSON_QUERY(js, '$' WITH ARRAY WRAPPER)
FROM
	(VALUES
		(jsonb 'null'),
		('12.3'),
		('true'),
		('"aaa"'),
		('[1, null, "2"]'),
		('{"a": 1, "b": [2]}')
	) foo(js);
     json_query     |     json_query     |     json_query     |      json_query      |      json_query      
--------------------+--------------------+--------------------+----------------------+----------------------
 null               | null               | [null]             | [null]               | [null]
 12.3               | 12.3               | [12.3]             | [12.3]               | [12.3]
 true               | true               | [true]             | [true]               | [true]
 "aaa"              | "aaa"              | ["aaa"]            | ["aaa"]              | ["aaa"]
 [1, null, "2"]     | [1, null, "2"]     | [1, null, "2"]     | [[1, null, "2"]]     | [[1, null, "2"]]
 {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | [{"a": 1, "b": [2]}] | [{"a": 1, "b": [2]}]
(6 rows)

SELECT
	JSON_QUERY(js, 'strict $[*]') AS "unspec",
	JSON_QUERY(js, 'strict $[*]' WITHOUT WRAPPER) AS "without",
	JSON_QUERY(js, 'strict $[*]' WITH CONDITIONAL WRAPPER) AS "with cond",
	JSON_QUERY(js, 'strict $[*]' WITH UNCONDITIONAL ARRAY WRAPPER) AS "with uncond",
	JSON_QUERY(js, 'strict $[*]' WITH ARRAY WRAPPER) AS "with"
FROM
	(VALUES
		(jsonb '1'),
		('[]'),
		('[null]'),
		('[12.3]'),
		('[true]'),
		('["aaa"]'),
		('[[1, 2, 3]]'),
		('[{"a": 1, "b": [2]}]'),
		('[1, "2", null, [3]]')
	) foo(js);
       unspec       |      without       |      with cond      |     with uncond      |         with         
--------------------+--------------------+---------------------+----------------------+----------------------
                    |                    |                     |                      | 
                    |                    |                     |                      | 
 null               | null               | [null]              | [null]               | [null]
 12.3               | 12.3               | [12.3]              | [12.3]               | [12.3]
 true               | true               | [true]              | [true]               | [true]
 "aaa"              | "aaa"              | ["aaa"]             | ["aaa"]              | ["aaa"]
 [1, 2, 3]          | [1, 2, 3]          | [1, 2, 3]           | [[1, 2, 3]]          | [[1, 2, 3]]
 {"a": 1, "b": [2]} | {"a": 1, "b": [2]} | {"a": 1, "b": [2]}  | [{"a": 1, "b": [2]}] | [{"a": 1, "b": [2]}]
                    |                    | [1, "2", null, [3]] | [1, "2", null, [3]]  | [1, "2", null, [3]]
(9 rows)

SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text);
 json_query 
------------
 "aaa"
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text KEEP QUOTES);
 json_query 
------------
 "aaa"
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text KEEP QUOTES ON SCALAR STRING);
 json_query 
------------
 "aaa"
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text OMIT QUOTES);
 json_query 
------------
 aaa
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING text OMIT QUOTES ON SCALAR STRING);
 json_query 
------------
 aaa
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$' OMIT QUOTES ERROR ON ERROR);
ERROR:  invalid input syntax for type json
DETAIL:  Token "aaa" is invalid.
CONTEXT:  JSON data, line 1: aaa
SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING json OMIT QUOTES ERROR ON ERROR);
ERROR:  invalid input syntax for type json
DETAIL:  Token "aaa" is invalid.
CONTEXT:  JSON data, line 1: aaa
SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING bytea FORMAT JSON OMIT QUOTES ERROR ON ERROR);
 json_query 
------------
 \x616161
(1 row)

-- Behavior when a RETURNING type has typmod != -1
SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING char(2));
 json_query 
------------
 "a
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$' RETURNING char(2) OMIT QUOTES);
 json_query 
------------
 aa
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$.a' RETURNING char(2) OMIT QUOTES DEFAULT 'bbb' ON EMPTY);
 json_query 
------------
 bb
(1 row)

SELECT JSON_QUERY(jsonb '"aaa"', '$.a' RETURNING char(2) OMIT QUOTES DEFAULT '"bbb"'::jsonb ON EMPTY);
 json_query 
------------
 "b
(1 row)

-- QUOTES behavior should not be specified when WITH WRAPPER used:
-- Should fail
SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER OMIT QUOTES);
ERROR:  SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER OMIT QUOTES)...
               ^
SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER KEEP QUOTES);
ERROR:  SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH WRAPPER KEEP QUOTES)...
               ^
SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER KEEP QUOTES);
ERROR:  SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER ...
               ^
SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER OMIT QUOTES);
ERROR:  SQL/JSON QUOTES behavior must not be specified when WITH WRAPPER is used
LINE 1: SELECT JSON_QUERY(jsonb '[1]', '$' WITH CONDITIONAL WRAPPER ...
               ^
-- Should succeed
SELECT JSON_QUERY(jsonb '[1]', '$' WITHOUT WRAPPER OMIT QUOTES);
 json_query 
------------
 [1]
(1 row)

SELECT JSON_QUERY(jsonb '[1]', '$' WITHOUT WRAPPER KEEP QUOTES);
 json_query 
------------
 [1]
(1 row)

-- test QUOTES behavior.
SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] omit quotes);
 json_query 
------------
 {1,2,3}
(1 row)

SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] keep quotes);
 json_query 
------------
 
(1 row)

SELECT JSON_QUERY(jsonb'{"rec": "{1,2,3}"}', '$.rec' returning int[] keep quotes error on error);
ERROR:  expected JSON array
SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range omit quotes);
 json_query 
------------
 [1,3)
(1 row)

SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' returning int4range keep quotes);
 json_query 
------------
 
(1 row)

SELECT JSON_QUERY(jsonb'{"rec": "[1,2]"}', '$.rec' 	returning int4range keep quotes error on error);
ERROR:  malformed range literal: ""[1,2]""
DETAIL:  Missing left parenthesis or bracket.
SELECT JSON_QUERY(jsonb '[]', '$[*]');
 json_query 
------------
 
(1 row)

SELECT JSON_QUERY(jsonb '[]', '$[*]' NULL ON EMPTY);
 json_query 
------------
 
(1 row)

SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY ON EMPTY);
 json_query 
------------
 []
(1 row)

SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY ARRAY ON EMPTY);
 json_query 
------------
 []
(1 row)

SELECT JSON_QUERY(jsonb '[]', '$[*]' EMPTY OBJECT ON EMPTY);
 json_query 
------------
 {}
(1 row)

SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY);
ERROR:  no SQL/JSON item
SELECT JSON_QUERY(jsonb '[]', '$[*]' DEFAULT '"empty"' ON EMPTY);
 json_query 
------------
 "empty"
(1 row)

SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY NULL ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY EMPTY ARRAY ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY EMPTY OBJECT ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON EMPTY ERROR ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_QUERY(jsonb '[]', '$[*]' ERROR ON ERROR);
ERROR:  no SQL/JSON item
SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' ERROR ON ERROR);
ERROR:  JSON path expression in JSON_QUERY should return singleton item without wrapper
HINT:  Use WITH WRAPPER clause to wrap SQL/JSON item sequence into array.
SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' DEFAULT '"empty"' ON ERROR);
 json_query 
------------
 "empty"
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING json);
 json_query 
------------
 [1, 2]
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING json FORMAT JSON);
 json_query 
------------
 [1, 2]
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING jsonb);
 json_query 
------------
 [1, 2]
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING jsonb FORMAT JSON);
 json_query 
------------
 [1, 2]
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text);
 json_query 
------------
 [1, 2]
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(10));
 json_query 
------------
 [1, 2]    
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING char(3));
 json_query 
------------
 [1,
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING text FORMAT JSON);
 json_query 
------------
 [1, 2]
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING bytea);
   json_query   
----------------
 \x5b312c20325d
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$' RETURNING bytea FORMAT JSON);
   json_query   
----------------
 \x5b312c20325d
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea EMPTY OBJECT ON ERROR);
ERROR:  cannot cast behavior expression of type jsonb to bytea
LINE 1: ... JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea EMPTY OBJE...
                                                             ^
SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING bytea FORMAT JSON EMPTY OBJECT ON ERROR);
ERROR:  cannot cast behavior expression of type jsonb to bytea
LINE 1: ...jsonb '[1,2]', '$[*]' RETURNING bytea FORMAT JSON EMPTY OBJE...
                                                             ^
SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING json EMPTY OBJECT ON ERROR);
 json_query 
------------
 {}
(1 row)

SELECT JSON_QUERY(jsonb '[1,2]', '$[*]' RETURNING jsonb EMPTY OBJECT ON ERROR);
 json_query 
------------
 {}
(1 row)

SELECT JSON_QUERY(jsonb '[3,4]', '$[*]' RETURNING bigint[] EMPTY OBJECT ON ERROR);
ERROR:  cannot cast behavior expression of type jsonb to bigint[]
LINE 1: ...ON_QUERY(jsonb '[3,4]', '$[*]' RETURNING bigint[] EMPTY OBJE...
                                                             ^
SELECT JSON_QUERY(jsonb '"[3,4]"', '$[*]' RETURNING bigint[] EMPTY OBJECT ON ERROR);
ERROR:  cannot cast behavior expression of type jsonb to bigint[]
LINE 1: ..._QUERY(jsonb '"[3,4]"', '$[*]' RETURNING bigint[] EMPTY OBJE...
                                                             ^
-- Coercion fails with quotes on
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int2 error on error);
ERROR:  invalid input syntax for type smallint: ""123.1""
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int4 error on error);
ERROR:  invalid input syntax for type integer: ""123.1""
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int8 error on error);
ERROR:  invalid input syntax for type bigint: ""123.1""
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING bool error on error);
ERROR:  invalid input syntax for type boolean: ""123.1""
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING numeric error on error);
ERROR:  invalid input syntax for type numeric: ""123.1""
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING real error on error);
ERROR:  invalid input syntax for type real: ""123.1""
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING float8 error on error);
ERROR:  invalid input syntax for type double precision: ""123.1""
-- Fine with OMIT QUOTES
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING int2 omit quotes error on error);
ERROR:  invalid input syntax for type smallint: "123.1"
SELECT JSON_QUERY(jsonb '"123.1"', '$' RETURNING float8 omit quotes error on error);
 json_query 
------------
      123.1
(1 row)

-- RETUGNING pseudo-types not allowed
SELECT JSON_QUERY(jsonb '[3,4]', '$[*]' RETURNING anyarray EMPTY OBJECT ON ERROR);
ERROR:  returning pseudo-types is not supported in SQL/JSON functions
SELECT
	x, y,
	JSON_QUERY(
		jsonb '[1,2,3,4,5,null]',
		'$[*] ? (@ >= $x && @ <= $y)'
		PASSING x AS x, y AS y
		WITH CONDITIONAL WRAPPER
		EMPTY ARRAY ON EMPTY
	) list
FROM
	generate_series(0, 4) x,
	generate_series(0, 4) y;
 x | y |     list     
---+---+--------------
 0 | 0 | []
 0 | 1 | [1]
 0 | 2 | [1, 2]
 0 | 3 | [1, 2, 3]
 0 | 4 | [1, 2, 3, 4]
 1 | 0 | []
 1 | 1 | [1]
 1 | 2 | [1, 2]
 1 | 3 | [1, 2, 3]
 1 | 4 | [1, 2, 3, 4]
 2 | 0 | []
 2 | 1 | []
 2 | 2 | [2]
 2 | 3 | [2, 3]
 2 | 4 | [2, 3, 4]
 3 | 0 | []
 3 | 1 | []
 3 | 2 | []
 3 | 3 | [3]
 3 | 4 | [3, 4]
 4 | 0 | []
 4 | 1 | []
 4 | 2 | []
 4 | 3 | []
 4 | 4 | [4]
(25 rows)

-- record type returning with quotes behavior.
CREATE TYPE comp_abc AS (a text, b int, c timestamp);
SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc omit quotes);
             json_query              
-------------------------------------
 (abc,42,"Thu Jan 02 00:00:00 2003")
(1 row)

SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc keep quotes);
 json_query 
------------
 
(1 row)

SELECT JSON_QUERY(jsonb'{"rec": "(abc,42,01.02.2003)"}', '$.rec' returning comp_abc keep quotes error on error);
ERROR:  cannot call populate_composite on a scalar
DROP TYPE comp_abc;
-- Extension: record types returning
CREATE TYPE sqljsonb_rec AS (a int, t text, js json, jb jsonb, jsa json[]);
CREATE TYPE sqljsonb_reca AS (reca sqljsonb_rec[]);
SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}},  {"a": 2}]', '$[0]' RETURNING sqljsonb_rec);
                     json_query                      
-----------------------------------------------------
 (1,aaa,"[1, ""2"", {}]","{""x"": [1, ""2"", {}]}",)
(1 row)

SELECT JSON_QUERY(jsonb '[{"a": "a", "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}},  {"a": 2}]', '$[0]' RETURNING sqljsonb_rec ERROR ON ERROR);
ERROR:  invalid input syntax for type integer: "a"
SELECT JSON_QUERY(jsonb '[{"a": "a", "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}},  {"a": 2}]', '$[0]' RETURNING sqljsonb_rec);
 json_query 
------------
 
(1 row)

SELECT * FROM unnest((JSON_QUERY(jsonb '{"jsa":  [{"a": 1, "b": ["foo"]}, {"a": 2, "c": {}}, 123]}', '$' RETURNING sqljsonb_rec)).jsa);
         unnest         
------------------------
 {"a": 1, "b": ["foo"]}
 {"a": 2, "c": {}}
 123
(3 rows)

SELECT * FROM unnest((JSON_QUERY(jsonb '{"reca": [{"a": 1, "t": ["foo", []]}, {"a": 2, "jb": [{}, true]}]}', '$' RETURNING sqljsonb_reca)).reca);
 a |      t      | js |     jb     | jsa 
---+-------------+----+------------+-----
 1 | ["foo", []] |    |            | 
 2 |             |    | [{}, true] | 
(2 rows)

SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}},  {"a": 2}]', '$[0]' RETURNING jsonpath);
 json_query 
------------
 
(1 row)

SELECT JSON_QUERY(jsonb '[{"a": 1, "b": "foo", "t": "aaa", "js": [1, "2", {}], "jb": {"x": [1, "2", {}]}},  {"a": 2}]', '$[0]' RETURNING jsonpath ERROR ON ERROR);
ERROR:  syntax error at or near "{" of jsonpath input
-- Extension: array types returning
SELECT JSON_QUERY(jsonb '[1,2,null,"3"]', '$[*]' RETURNING int[] WITH WRAPPER);
  json_query  
--------------
 {1,2,NULL,3}
(1 row)

SELECT JSON_QUERY(jsonb '[1,2,null,"a"]', '$[*]' RETURNING int[] WITH WRAPPER ERROR ON ERROR);
ERROR:  invalid input syntax for type integer: "a"
SELECT JSON_QUERY(jsonb '[1,2,null,"a"]', '$[*]' RETURNING int[] WITH WRAPPER);
 json_query 
------------
 
(1 row)

SELECT * FROM unnest(JSON_QUERY(jsonb '[{"a": 1, "t": ["foo", []]}, {"a": 2, "jb": [{}, true]}]', '$' RETURNING sqljsonb_rec[]));
 a |      t      | js |     jb     | jsa 
---+-------------+----+------------+-----
 1 | ["foo", []] |    |            | 
 2 |             |    | [{}, true] | 
(2 rows)

-- Extension: domain types returning
SELECT JSON_QUERY(jsonb '{"a": 1}', '$.a' RETURNING sqljsonb_int_not_null);
 json_query 
------------
          1
(1 row)

SELECT JSON_QUERY(jsonb '{"a": 1}', '$.b' RETURNING sqljsonb_int_not_null);
 json_query 
------------
           
(1 row)

SELECT JSON_QUERY(jsonb '{"a": 1}', '$.b' RETURNING sqljsonb_int_not_null ERROR ON ERROR);
ERROR:  no SQL/JSON item
-- Test timestamptz passing and output
SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts);
         json_query          
-----------------------------
 "2018-02-21T02:34:56+00:00"
(1 row)

SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING json);
         json_query          
-----------------------------
 "2018-02-21T02:34:56+00:00"
(1 row)

SELECT JSON_QUERY(jsonb 'null', '$ts' PASSING timestamptz '2018-02-21 12:34:56 +10' AS ts RETURNING jsonb);
         json_query          
-----------------------------
 "2018-02-21T02:34:56+00:00"
(1 row)

-- Test constraints
CREATE TABLE test_jsonb_constraints (
	js text,
	i int,
	x jsonb DEFAULT JSON_QUERY(jsonb '[1,2]', '$[*]' WITH WRAPPER)
	CONSTRAINT test_jsonb_constraint1
		CHECK (js IS JSON)
	CONSTRAINT test_jsonb_constraint2
		CHECK (JSON_EXISTS(js::jsonb, '$.a' PASSING i + 5 AS int, i::text AS txt, array[1,2,3] as arr))
	CONSTRAINT test_jsonb_constraint3
		CHECK (JSON_VALUE(js::jsonb, '$.a' RETURNING int DEFAULT '12' ON EMPTY ERROR ON ERROR) > i)
	CONSTRAINT test_jsonb_constraint4
		CHECK (JSON_QUERY(js::jsonb, '$.a' WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < jsonb '[10]')
	CONSTRAINT test_jsonb_constraint5
		CHECK (JSON_QUERY(js::jsonb, '$.a' RETURNING char(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) >  'a' COLLATE "C")
);
\d test_jsonb_constraints
                                          Table "public.test_jsonb_constraints"
 Column |  Type   | Collation | Nullable |                                    Default                                     
--------+---------+-----------+----------+--------------------------------------------------------------------------------
 js     | text    |           |          | 
 i      | integer |           |          | 
 x      | jsonb   |           |          | JSON_QUERY('[1, 2]'::jsonb, '$[*]' RETURNING jsonb WITH UNCONDITIONAL WRAPPER)
Check constraints:
    "test_jsonb_constraint1" CHECK (js IS JSON)
    "test_jsonb_constraint2" CHECK (JSON_EXISTS(js::jsonb, '$."a"' PASSING i + 5 AS int, i::text AS txt, ARRAY[1, 2, 3] AS arr))
    "test_jsonb_constraint3" CHECK (JSON_VALUE(js::jsonb, '$."a"' RETURNING integer DEFAULT 12 ON EMPTY ERROR ON ERROR) > i)
    "test_jsonb_constraint4" CHECK (JSON_QUERY(js::jsonb, '$."a"' RETURNING jsonb WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < '[10]'::jsonb)
    "test_jsonb_constraint5" CHECK (JSON_QUERY(js::jsonb, '$."a"' RETURNING character(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) > ('a'::bpchar COLLATE "C"))

SELECT check_clause
FROM information_schema.check_constraints
WHERE constraint_name LIKE 'test_jsonb_constraint%'
ORDER BY 1;
                                                      check_clause                                                      
------------------------------------------------------------------------------------------------------------------------
 (JSON_QUERY((js)::jsonb, '$."a"' RETURNING character(5) OMIT QUOTES EMPTY ARRAY ON EMPTY) > ('a'::bpchar COLLATE "C"))
 (JSON_QUERY((js)::jsonb, '$."a"' RETURNING jsonb WITH CONDITIONAL WRAPPER EMPTY OBJECT ON ERROR) < '[10]'::jsonb)
 (JSON_VALUE((js)::jsonb, '$."a"' RETURNING integer DEFAULT 12 ON EMPTY ERROR ON ERROR) > i)
 (js IS JSON)
 JSON_EXISTS((js)::jsonb, '$."a"' PASSING (i + 5) AS int, (i)::text AS txt, ARRAY[1, 2, 3] AS arr)
(5 rows)

SELECT pg_get_expr(adbin, adrelid)
FROM pg_attrdef
WHERE adrelid = 'test_jsonb_constraints'::regclass
ORDER BY 1;
                                  pg_get_expr                                   
--------------------------------------------------------------------------------
 JSON_QUERY('[1, 2]'::jsonb, '$[*]' RETURNING jsonb WITH UNCONDITIONAL WRAPPER)
(1 row)

INSERT INTO test_jsonb_constraints VALUES ('', 1);
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint1"
DETAIL:  Failing row contains (, 1, [1, 2]).
INSERT INTO test_jsonb_constraints VALUES ('1', 1);
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint2"
DETAIL:  Failing row contains (1, 1, [1, 2]).
INSERT INTO test_jsonb_constraints VALUES ('[]');
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint2"
DETAIL:  Failing row contains ([], null, [1, 2]).
INSERT INTO test_jsonb_constraints VALUES ('{"b": 1}', 1);
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint2"
DETAIL:  Failing row contains ({"b": 1}, 1, [1, 2]).
INSERT INTO test_jsonb_constraints VALUES ('{"a": 1}', 1);
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint3"
DETAIL:  Failing row contains ({"a": 1}, 1, [1, 2]).
INSERT INTO test_jsonb_constraints VALUES ('{"a": 7}', 1);
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint5"
DETAIL:  Failing row contains ({"a": 7}, 1, [1, 2]).
INSERT INTO test_jsonb_constraints VALUES ('{"a": 10}', 1);
ERROR:  new row for relation "test_jsonb_constraints" violates check constraint "test_jsonb_constraint4"
DETAIL:  Failing row contains ({"a": 10}, 1, [1, 2]).
DROP TABLE test_jsonb_constraints;
-- Test mutabilily of query functions
CREATE TABLE test_jsonb_mutability(js jsonb, b int);
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$'));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a[0]'));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.time()'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date()'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.time_tz()'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.timestamp()'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.timestamp_tz()'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.time_tz())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.time())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.time())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.time_tz())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.timestamp_tz())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.timestamp_tz())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.time() < $.datetime("HH:MI TZH"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.date() < $.datetime("HH:MI TZH"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.datetime("HH:MI TZH"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp() < $.datetime("HH:MI"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.datetime("HH:MI TZH"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp_tz() < $.datetime("HH:MI"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date() < $x' PASSING '12:34'::timetz AS x));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.date() < $x' PASSING '1234'::int AS x));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.timestamp(2) < $.timestamp(3))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime()'));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@ < $.datetime())'));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime() < $.datetime())'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime() < $.datetime("HH:MI TZH"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI TZH") < $.datetime("HH:MI TZH"))'));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI") < $.datetime("YY-MM-DD HH:MI"))'));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.a ? (@.datetime("HH:MI TZH") < $.datetime("YY-MM-DD HH:MI"))'));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("HH:MI TZH") < $x' PASSING '12:34'::timetz AS x));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("HH:MI TZH") < $y' PASSING '12:34'::timetz AS x));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() < $x' PASSING '12:34'::timetz AS x));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() < $x' PASSING '1234'::int AS x));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime() ? (@ == $x)' PASSING '12:34'::time AS x));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$.datetime("YY-MM-DD") ? (@ == $x)' PASSING '2020-07-14'::date AS x));
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, $.a ? (@.datetime() == $x)]' PASSING '12:34'::time AS x));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, 0 to $.a ? (@.datetime() == $x)]' PASSING '12:34'::time AS x));
ERROR:  functions in index expression must be marked IMMUTABLE
CREATE INDEX ON test_jsonb_mutability (JSON_QUERY(js, '$[1, $.a ? (@.datetime("HH:MI") == $x)]' PASSING '12:34'::time AS x));
CREATE INDEX ON test_jsonb_mutability (JSON_VALUE(js, '$' DEFAULT random()::int ON ERROR));
ERROR:  functions in index expression must be marked IMMUTABLE
-- DEFAULT expression
CREATE OR REPLACE FUNCTION ret_setint() RETURNS SETOF integer AS
$$
BEGIN
    RETURN QUERY EXECUTE 'select 1 union all select 1';
END;
$$
LANGUAGE plpgsql IMMUTABLE;
SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT ret_setint() ON ERROR) FROM test_jsonb_mutability;
ERROR:  DEFAULT expression must not return a set
LINE 1: SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT ret_setint(...
                                                         ^
SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT b + 1 ON ERROR) FROM test_jsonb_mutability;
ERROR:  DEFAULT expression must not contain column references
LINE 1: SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT b + 1 ON ER...
                                                         ^
SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT sum(1) over() ON ERROR) FROM test_jsonb_mutability;
ERROR:  can only specify a constant, non-aggregate function, or operator expression for DEFAULT
LINE 1: SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT sum(1) over...
                                                         ^
SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT (SELECT 1) ON ERROR) FROM test_jsonb_mutability;
ERROR:  can only specify a constant, non-aggregate function, or operator expression for DEFAULT
LINE 1: SELECT JSON_QUERY(js, '$'  RETURNING int DEFAULT (SELECT 1) ...
                                                         ^
DROP TABLE test_jsonb_mutability;
DROP FUNCTION ret_setint;
-- Extension: non-constant JSON path
SELECT JSON_EXISTS(jsonb '{"a": 123}', '$' || '.' || 'a');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_VALUE(jsonb '{"a": 123}', '$' || '.' || 'a');
 json_value 
------------
 123
(1 row)

SELECT JSON_VALUE(jsonb '{"a": 123}', '$' || '.' || 'b' DEFAULT 'foo' ON EMPTY);
 json_value 
------------
 foo
(1 row)

SELECT JSON_QUERY(jsonb '{"a": 123}', '$' || '.' || 'a');
 json_query 
------------
 123
(1 row)

SELECT JSON_QUERY(jsonb '{"a": 123}', '$' || '.' || 'a' WITH WRAPPER);
 json_query 
------------
 [123]
(1 row)

-- Should fail (invalid path)
SELECT JSON_QUERY(jsonb '{"a": 123}', 'error' || ' ' || 'error');
ERROR:  syntax error at or near " " of jsonpath input
-- Non-jsonb inputs automatically coerced to jsonb
SELECT JSON_EXISTS(json '{"a": 123}', '$' || '.' || 'a');
 json_exists 
-------------
 t
(1 row)

SELECT JSON_QUERY(NULL FORMAT JSON, '$');
 json_query 
------------
 
(1 row)

-- Test non-const jsonpath
CREATE TEMP TABLE jsonpaths (path) AS SELECT '$';
SELECT json_value('"aaa"', path RETURNING json) FROM jsonpaths;
 json_value 
------------
 "aaa"
(1 row)