ydb/yql/essentials/tests/postgresql/original/cases/json.out

-- Strings.
SELECT '""'::json;				-- OK.
 json 
------
 ""
(1 row)

SELECT $$''$$::json;			-- ERROR, single quotes are not allowed
ERROR:  invalid input syntax for type json
LINE 1: SELECT $$''$$::json;
               ^
DETAIL:  Token "'" is invalid.
CONTEXT:  JSON data, line 1: '...
SELECT '"abc"'::json;			-- OK
 json  
-------
 "abc"
(1 row)

SELECT '"abc'::json;			-- ERROR, quotes not closed
ERROR:  invalid input syntax for type json
LINE 1: SELECT '"abc'::json;
               ^
DETAIL:  Token ""abc" is invalid.
CONTEXT:  JSON data, line 1: "abc
SELECT '"abc
def"'::json;					-- ERROR, unescaped newline in string constant
ERROR:  invalid input syntax for type json
LINE 1: SELECT '"abc
               ^
DETAIL:  Character with value 0x0a must be escaped.
CONTEXT:  JSON data, line 1: "abc
SELECT '"\n\"\\"'::json;		-- OK, legal escapes
   json   
----------
 "\n\"\\"
(1 row)

SELECT '"\v"'::json;			-- ERROR, not a valid JSON escape
ERROR:  invalid input syntax for type json
LINE 1: SELECT '"\v"'::json;
               ^
DETAIL:  Escape sequence "\v" is invalid.
CONTEXT:  JSON data, line 1: "\v...
-- see json_encoding test for input with unicode escapes
-- Numbers.
SELECT '1'::json;				-- OK
 json 
------
 1
(1 row)

SELECT '0'::json;				-- OK
 json 
------
 0
(1 row)

SELECT '01'::json;				-- ERROR, not valid according to JSON spec
ERROR:  invalid input syntax for type json
LINE 1: SELECT '01'::json;
               ^
DETAIL:  Token "01" is invalid.
CONTEXT:  JSON data, line 1: 01
SELECT '0.1'::json;				-- OK
 json 
------
 0.1
(1 row)

SELECT '9223372036854775808'::json;	-- OK, even though it's too large for int8
        json         
---------------------
 9223372036854775808
(1 row)

SELECT '1e100'::json;			-- OK
 json  
-------
 1e100
(1 row)

SELECT '1.3e100'::json;			-- OK
  json   
---------
 1.3e100
(1 row)

SELECT '1f2'::json;				-- ERROR
ERROR:  invalid input syntax for type json
LINE 1: SELECT '1f2'::json;
               ^
DETAIL:  Token "1f2" is invalid.
CONTEXT:  JSON data, line 1: 1f2
SELECT '0.x1'::json;			-- ERROR
ERROR:  invalid input syntax for type json
LINE 1: SELECT '0.x1'::json;
               ^
DETAIL:  Token "0.x1" is invalid.
CONTEXT:  JSON data, line 1: 0.x1
SELECT '1.3ex100'::json;		-- ERROR
ERROR:  invalid input syntax for type json
LINE 1: SELECT '1.3ex100'::json;
               ^
DETAIL:  Token "1.3ex100" is invalid.
CONTEXT:  JSON data, line 1: 1.3ex100
-- Arrays.
SELECT '[]'::json;				-- OK
 json 
------
 []
(1 row)

SELECT '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'::json;  -- OK
                                                                                                   json                                                                                                   
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 [[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]
(1 row)

SELECT '[1,2]'::json;			-- OK
 json  
-------
 [1,2]
(1 row)

SELECT '[1,2,]'::json;			-- ERROR, trailing comma
ERROR:  invalid input syntax for type json
LINE 1: SELECT '[1,2,]'::json;
               ^
DETAIL:  Expected JSON value, but found "]".
CONTEXT:  JSON data, line 1: [1,2,]
SELECT '[1,2'::json;			-- ERROR, no closing bracket
ERROR:  invalid input syntax for type json
LINE 1: SELECT '[1,2'::json;
               ^
DETAIL:  The input string ended unexpectedly.
CONTEXT:  JSON data, line 1: [1,2
SELECT '[1,[2]'::json;			-- ERROR, no closing bracket
ERROR:  invalid input syntax for type json
LINE 1: SELECT '[1,[2]'::json;
               ^
DETAIL:  The input string ended unexpectedly.
CONTEXT:  JSON data, line 1: [1,[2]
-- Objects.
SELECT '{}'::json;				-- OK
 json 
------
 {}
(1 row)

SELECT '{"abc"}'::json;			-- ERROR, no value
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{"abc"}'::json;
               ^
DETAIL:  Expected ":", but found "}".
CONTEXT:  JSON data, line 1: {"abc"}
SELECT '{"abc":1}'::json;		-- OK
   json    
-----------
 {"abc":1}
(1 row)

SELECT '{1:"abc"}'::json;		-- ERROR, keys must be strings
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{1:"abc"}'::json;
               ^
DETAIL:  Expected string or "}", but found "1".
CONTEXT:  JSON data, line 1: {1...
SELECT '{"abc",1}'::json;		-- ERROR, wrong separator
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{"abc",1}'::json;
               ^
DETAIL:  Expected ":", but found ",".
CONTEXT:  JSON data, line 1: {"abc",...
SELECT '{"abc"=1}'::json;		-- ERROR, totally wrong separator
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{"abc"=1}'::json;
               ^
DETAIL:  Token "=" is invalid.
CONTEXT:  JSON data, line 1: {"abc"=...
SELECT '{"abc"::1}'::json;		-- ERROR, another wrong separator
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{"abc"::1}'::json;
               ^
DETAIL:  Expected JSON value, but found ":".
CONTEXT:  JSON data, line 1: {"abc"::...
SELECT '{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}'::json; -- OK
                          json                           
---------------------------------------------------------
 {"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}
(1 row)

SELECT '{"abc":1:2}'::json;		-- ERROR, colon in wrong spot
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{"abc":1:2}'::json;
               ^
DETAIL:  Expected "," or "}", but found ":".
CONTEXT:  JSON data, line 1: {"abc":1:...
SELECT '{"abc":1,3}'::json;		-- ERROR, no value
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{"abc":1,3}'::json;
               ^
DETAIL:  Expected string, but found "3".
CONTEXT:  JSON data, line 1: {"abc":1,3...
-- Recursion.
SET max_stack_depth = '100kB';
SELECT repeat('[', 10000)::json;
ERROR:  stack depth limit exceeded
HINT:  Increase the configuration parameter "max_stack_depth" (currently 100kB), after ensuring the platform's stack depth limit is adequate.
SELECT repeat('{"a":', 10000)::json;
ERROR:  stack depth limit exceeded
HINT:  Increase the configuration parameter "max_stack_depth" (currently 100kB), after ensuring the platform's stack depth limit is adequate.
RESET max_stack_depth;
-- Miscellaneous stuff.
SELECT 'true'::json;			-- OK
 json 
------
 true
(1 row)

SELECT 'false'::json;			-- OK
 json  
-------
 false
(1 row)

SELECT 'null'::json;			-- OK
 json 
------
 null
(1 row)

SELECT ' true '::json;			-- OK, even with extra whitespace
  json  
--------
  true 
(1 row)

SELECT 'true false'::json;		-- ERROR, too many values
ERROR:  invalid input syntax for type json
LINE 1: SELECT 'true false'::json;
               ^
DETAIL:  Expected end of input, but found "false".
CONTEXT:  JSON data, line 1: true false
SELECT 'true, false'::json;		-- ERROR, too many values
ERROR:  invalid input syntax for type json
LINE 1: SELECT 'true, false'::json;
               ^
DETAIL:  Expected end of input, but found ",".
CONTEXT:  JSON data, line 1: true,...
SELECT 'truf'::json;			-- ERROR, not a keyword
ERROR:  invalid input syntax for type json
LINE 1: SELECT 'truf'::json;
               ^
DETAIL:  Token "truf" is invalid.
CONTEXT:  JSON data, line 1: truf
SELECT 'trues'::json;			-- ERROR, not a keyword
ERROR:  invalid input syntax for type json
LINE 1: SELECT 'trues'::json;
               ^
DETAIL:  Token "trues" is invalid.
CONTEXT:  JSON data, line 1: trues
SELECT ''::json;				-- ERROR, no value
ERROR:  invalid input syntax for type json
LINE 1: SELECT ''::json;
               ^
DETAIL:  The input string ended unexpectedly.
CONTEXT:  JSON data, line 1: 
SELECT '    '::json;			-- ERROR, no value
ERROR:  invalid input syntax for type json
LINE 1: SELECT '    '::json;
               ^
DETAIL:  The input string ended unexpectedly.
CONTEXT:  JSON data, line 1:     
-- Multi-line JSON input to check ERROR reporting
SELECT '{
		"one": 1,
		"two":"two",
		"three":
		true}'::json; -- OK
             json             
------------------------------
 {                           +
                 "one": 1,   +
                 "two":"two",+
                 "three":    +
                 true}
(1 row)

SELECT '{
		"one": 1,
		"two":,"two",  -- ERROR extraneous comma before field "two"
		"three":
		true}'::json;
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{
               ^
DETAIL:  Expected JSON value, but found ",".
CONTEXT:  JSON data, line 3: 		"two":,...
SELECT '{
		"one": 1,
		"two":"two",
		"averyveryveryveryveryveryveryveryveryverylongfieldname":}'::json;
ERROR:  invalid input syntax for type json
LINE 1: SELECT '{
               ^
DETAIL:  Expected JSON value, but found "}".
CONTEXT:  JSON data, line 4: ...yveryveryveryveryveryveryveryverylongfieldname":}
-- ERROR missing value for last field
--constructors
-- array_to_json
SELECT array_to_json(array(select 1 as a));
 array_to_json 
---------------
 [1]
(1 row)

SELECT array_to_json(array_agg(q),false) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
                array_to_json                
---------------------------------------------
 [{"b":1,"c":2},{"b":2,"c":4},{"b":3,"c":6}]
(1 row)

SELECT array_to_json(array_agg(q),true) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
  array_to_json  
-----------------
 [{"b":1,"c":2},+
  {"b":2,"c":4},+
  {"b":3,"c":6}]
(1 row)

SELECT array_to_json(array_agg(q),false)
  FROM ( SELECT $$a$$ || x AS b, y AS c,
               ARRAY[ROW(x.*,ARRAY[1,2,3]),
               ROW(y.*,ARRAY[4,5,6])] AS z
         FROM generate_series(1,2) x,
              generate_series(4,5) y) q;
                                                                                                                                 array_to_json                                                                                                                                 
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 [{"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]},{"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]},{"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]},{"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}]
(1 row)

SELECT array_to_json(array_agg(x),false) from generate_series(5,10) x;
 array_to_json  
----------------
 [5,6,7,8,9,10]
(1 row)

SELECT array_to_json('{{1,5},{99,100}}'::int[]);
  array_to_json   
------------------
 [[1,5],[99,100]]
(1 row)

-- row_to_json
SELECT row_to_json(row(1,'foo'));
     row_to_json     
---------------------
 {"f1":1,"f2":"foo"}
(1 row)

SELECT row_to_json(q)
FROM (SELECT $$a$$ || x AS b,
         y AS c,
         ARRAY[ROW(x.*,ARRAY[1,2,3]),
               ROW(y.*,ARRAY[4,5,6])] AS z
      FROM generate_series(1,2) x,
           generate_series(4,5) y) q;
                            row_to_json                             
--------------------------------------------------------------------
 {"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
 {"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
 {"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
 {"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
(4 rows)

SELECT row_to_json(q,true)
FROM (SELECT $$a$$ || x AS b,
         y AS c,
         ARRAY[ROW(x.*,ARRAY[1,2,3]),
               ROW(y.*,ARRAY[4,5,6])] AS z
      FROM generate_series(1,2) x,
           generate_series(4,5) y) q;
                     row_to_json                     
-----------------------------------------------------
 {"b":"a1",                                         +
  "c":4,                                            +
  "z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
 {"b":"a1",                                         +
  "c":5,                                            +
  "z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
 {"b":"a2",                                         +
  "c":4,                                            +
  "z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
 {"b":"a2",                                         +
  "c":5,                                            +
  "z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
(4 rows)

CREATE TEMP TABLE rows AS
SELECT x, 'txt' || x as y
FROM generate_series(1,3) AS x;
SELECT row_to_json(q,true)
FROM rows q;
 row_to_json  
--------------
 {"x":1,     +
  "y":"txt1"}
 {"x":2,     +
  "y":"txt2"}
 {"x":3,     +
  "y":"txt3"}
(3 rows)

SELECT row_to_json(row((select array_agg(x) as d from generate_series(5,10) x)),false);
      row_to_json      
-----------------------
 {"f1":[5,6,7,8,9,10]}
(1 row)

-- anyarray column
analyze rows;
select attname, to_json(histogram_bounds) histogram_bounds
from pg_stats
where tablename = 'rows' and
      schemaname = pg_my_temp_schema()::regnamespace::text
order by 1;
 attname |    histogram_bounds    
---------+------------------------
 x       | [1,2,3]
 y       | ["txt1","txt2","txt3"]
(2 rows)

-- to_json, timestamps
select to_json(timestamp '2014-05-28 12:22:35.614298');
           to_json            
------------------------------
 "2014-05-28T12:22:35.614298"
(1 row)

BEGIN;
SET LOCAL TIME ZONE 10.5;
select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
              to_json               
------------------------------------
 "2014-05-29T02:52:35.614298+10:30"
(1 row)

SET LOCAL TIME ZONE -8;
select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
              to_json               
------------------------------------
 "2014-05-28T08:22:35.614298-08:00"
(1 row)

COMMIT;
select to_json(date '2014-05-28');
   to_json    
--------------
 "2014-05-28"
(1 row)

select to_json(date 'Infinity');
  to_json   
------------
 "infinity"
(1 row)

select to_json(date '-Infinity');
   to_json   
-------------
 "-infinity"
(1 row)

select to_json(timestamp 'Infinity');
  to_json   
------------
 "infinity"
(1 row)

select to_json(timestamp '-Infinity');
   to_json   
-------------
 "-infinity"
(1 row)

select to_json(timestamptz 'Infinity');
  to_json   
------------
 "infinity"
(1 row)

select to_json(timestamptz '-Infinity');
   to_json   
-------------
 "-infinity"
(1 row)

--json_agg
SELECT json_agg(q)
  FROM ( SELECT $$a$$ || x AS b, y AS c,
               ARRAY[ROW(x.*,ARRAY[1,2,3]),
               ROW(y.*,ARRAY[4,5,6])] AS z
         FROM generate_series(1,2) x,
              generate_series(4,5) y) q;
                               json_agg                                
-----------------------------------------------------------------------
 [{"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}, +
  {"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}, +
  {"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}, +
  {"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}]
(1 row)

SELECT json_agg(q ORDER BY x, y)
  FROM rows q;
       json_agg        
-----------------------
 [{"x":1,"y":"txt1"}, +
  {"x":2,"y":"txt2"}, +
  {"x":3,"y":"txt3"}]
(1 row)

UPDATE rows SET x = NULL WHERE x = 1;
SELECT json_agg(q ORDER BY x NULLS FIRST, y)
  FROM rows q;
         json_agg         
--------------------------
 [{"x":null,"y":"txt1"}, +
  {"x":2,"y":"txt2"},    +
  {"x":3,"y":"txt3"}]
(1 row)

-- non-numeric output
SELECT row_to_json(q)
FROM (SELECT 'NaN'::float8 AS "float8field") q;
      row_to_json      
-----------------------
 {"float8field":"NaN"}
(1 row)

SELECT row_to_json(q)
FROM (SELECT 'Infinity'::float8 AS "float8field") q;
        row_to_json         
----------------------------
 {"float8field":"Infinity"}
(1 row)

SELECT row_to_json(q)
FROM (SELECT '-Infinity'::float8 AS "float8field") q;
         row_to_json         
-----------------------------
 {"float8field":"-Infinity"}
(1 row)

-- json input
SELECT row_to_json(q)
FROM (SELECT '{"a":1,"b": [2,3,4,"d","e","f"],"c":{"p":1,"q":2}}'::json AS "jsonfield") q;
                           row_to_json                            
------------------------------------------------------------------
 {"jsonfield":{"a":1,"b": [2,3,4,"d","e","f"],"c":{"p":1,"q":2}}}
(1 row)

-- json extraction functions
CREATE TEMP TABLE test_json (
       json_type text,
       test_json json
);
INSERT INTO test_json VALUES
('scalar','"a scalar"'),
('array','["zero", "one","two",null,"four","five", [1,2,3],{"f1":9}]'),
('object','{"field1":"val1","field2":"val2","field3":null, "field4": 4, "field5": [1,2,3], "field6": {"f1":9}}');
SELECT test_json -> 'x'
FROM test_json
WHERE json_type = 'scalar';
 ?column? 
----------
 
(1 row)

SELECT test_json -> 'x'
FROM test_json
WHERE json_type = 'array';
 ?column? 
----------
 
(1 row)

SELECT test_json -> 'x'
FROM test_json
WHERE json_type = 'object';
 ?column? 
----------
 
(1 row)

SELECT test_json->'field2'
FROM test_json
WHERE json_type = 'object';
 ?column? 
----------
 "val2"
(1 row)

SELECT test_json->>'field2'
FROM test_json
WHERE json_type = 'object';
 ?column? 
----------
 val2
(1 row)

SELECT test_json -> 2
FROM test_json
WHERE json_type = 'scalar';
 ?column? 
----------
 
(1 row)

SELECT test_json -> 2
FROM test_json
WHERE json_type = 'array';
 ?column? 
----------
 "two"
(1 row)

SELECT test_json -> -1
FROM test_json
WHERE json_type = 'array';
 ?column? 
----------
 {"f1":9}
(1 row)

SELECT test_json -> 2
FROM test_json
WHERE json_type = 'object';
 ?column? 
----------
 
(1 row)

SELECT test_json->>2
FROM test_json
WHERE json_type = 'array';
 ?column? 
----------
 two
(1 row)

SELECT test_json ->> 6 FROM test_json WHERE json_type = 'array';
 ?column? 
----------
 [1,2,3]
(1 row)

SELECT test_json ->> 7 FROM test_json WHERE json_type = 'array';
 ?column? 
----------
 {"f1":9}
(1 row)

SELECT test_json ->> 'field4' FROM test_json WHERE json_type = 'object';
 ?column? 
----------
 4
(1 row)

SELECT test_json ->> 'field5' FROM test_json WHERE json_type = 'object';
 ?column? 
----------
 [1,2,3]
(1 row)

SELECT test_json ->> 'field6' FROM test_json WHERE json_type = 'object';
 ?column? 
----------
 {"f1":9}
(1 row)

SELECT json_object_keys(test_json)
FROM test_json
WHERE json_type = 'scalar';
ERROR:  cannot call json_object_keys on a scalar
SELECT json_object_keys(test_json)
FROM test_json
WHERE json_type = 'array';
ERROR:  cannot call json_object_keys on an array
SELECT json_object_keys(test_json)
FROM test_json
WHERE json_type = 'object';
 json_object_keys 
------------------
 field1
 field2
 field3
 field4
 field5
 field6
(6 rows)

-- test extending object_keys resultset - initial resultset size is 256
select count(*) from
    (select json_object_keys(json_object(array_agg(g)))
     from (select unnest(array['f'||n,n::text])as g
           from generate_series(1,300) as n) x ) y;
 count 
-------
   300
(1 row)

-- nulls
select (test_json->'field3') is null as expect_false
from test_json
where json_type = 'object';
 expect_false 
--------------
 f
(1 row)

select (test_json->>'field3') is null as expect_true
from test_json
where json_type = 'object';
 expect_true 
-------------
 t
(1 row)

select (test_json->3) is null as expect_false
from test_json
where json_type = 'array';
 expect_false 
--------------
 f
(1 row)

select (test_json->>3) is null as expect_true
from test_json
where json_type = 'array';
 expect_true 
-------------
 t
(1 row)

-- corner cases
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> null::text;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> null::int;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> 1;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> -1;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> 'z';
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> '';
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json -> 1;
  ?column?   
-------------
 {"b": "cc"}
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json -> 3;
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json -> 'z';
 ?column? 
----------
 
(1 row)

select '{"a": "c", "b": null}'::json -> 'b';
 ?column? 
----------
 null
(1 row)

select '"foo"'::json -> 1;
 ?column? 
----------
 
(1 row)

select '"foo"'::json -> 'z';
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> null::text;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> null::int;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> 1;
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> 'z';
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> '';
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json ->> 1;
  ?column?   
-------------
 {"b": "cc"}
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json ->> 3;
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json ->> 'z';
 ?column? 
----------
 
(1 row)

select '{"a": "c", "b": null}'::json ->> 'b';
 ?column? 
----------
 
(1 row)

select '"foo"'::json ->> 1;
 ?column? 
----------
 
(1 row)

select '"foo"'::json ->> 'z';
 ?column? 
----------
 
(1 row)

-- array length
SELECT json_array_length('[1,2,3,{"f1":1,"f2":[5,6]},4]');
 json_array_length 
-------------------
                 5
(1 row)

SELECT json_array_length('[]');
 json_array_length 
-------------------
                 0
(1 row)

SELECT json_array_length('{"f1":1,"f2":[5,6]}');
ERROR:  cannot get array length of a non-array
SELECT json_array_length('4');
ERROR:  cannot get array length of a scalar
-- each
select json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null}');
     json_each     
-------------------
 (f1,"[1,2,3]")
 (f2,"{""f3"":1}")
 (f4,null)
(3 rows)

select * from json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
 key |   value   
-----+-----------
 f1  | [1,2,3]
 f2  | {"f3":1}
 f4  | null
 f5  | 99
 f6  | "stringy"
(5 rows)

select json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":"null"}');
  json_each_text   
-------------------
 (f1,"[1,2,3]")
 (f2,"{""f3"":1}")
 (f4,)
 (f5,null)
(4 rows)

select * from json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
 key |  value   
-----+----------
 f1  | [1,2,3]
 f2  | {"f3":1}
 f4  | 
 f5  | 99
 f6  | stringy
(5 rows)

-- extract_path, extract_path_as_text
select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
 json_extract_path 
-------------------
 "stringy"
(1 row)

select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
 json_extract_path 
-------------------
 {"f3":1}
(1 row)

select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
 json_extract_path 
-------------------
 "f3"
(1 row)

select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
 json_extract_path 
-------------------
 1
(1 row)

select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
 json_extract_path_text 
------------------------
 stringy
(1 row)

select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
 json_extract_path_text 
------------------------
 {"f3":1}
(1 row)

select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
 json_extract_path_text 
------------------------
 f3
(1 row)

select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
 json_extract_path_text 
------------------------
 1
(1 row)

-- extract_path nulls
select json_extract_path('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_false;
 expect_false 
--------------
 f
(1 row)

select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_true;
 expect_true 
-------------
 t
(1 row)

select json_extract_path('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_false;
 expect_false 
--------------
 f
(1 row)

select json_extract_path_text('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_true;
 expect_true 
-------------
 t
(1 row)

-- extract_path operators
select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f4','f6'];
 ?column?  
-----------
 "stringy"
(1 row)

select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2'];
 ?column? 
----------
 {"f3":1}
(1 row)

select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','0'];
 ?column? 
----------
 "f3"
(1 row)

select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','1'];
 ?column? 
----------
 1
(1 row)

select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f4','f6'];
 ?column? 
----------
 stringy
(1 row)

select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2'];
 ?column? 
----------
 {"f3":1}
(1 row)

select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','0'];
 ?column? 
----------
 f3
(1 row)

select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','1'];
 ?column? 
----------
 1
(1 row)

-- corner cases for same
select '{"a": {"b":{"c": "foo"}}}'::json #> '{}';
         ?column?          
---------------------------
 {"a": {"b":{"c": "foo"}}}
(1 row)

select '[1,2,3]'::json #> '{}';
 ?column? 
----------
 [1,2,3]
(1 row)

select '"foo"'::json #> '{}';
 ?column? 
----------
 "foo"
(1 row)

select '42'::json #> '{}';
 ?column? 
----------
 42
(1 row)

select 'null'::json #> '{}';
 ?column? 
----------
 null
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a'];
      ?column?      
--------------------
 {"b":{"c": "foo"}}
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a', null];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a', ''];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b'];
   ?column?   
--------------
 {"c": "foo"}
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b','c'];
 ?column? 
----------
 "foo"
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b','c','d'];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','z','c'];
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #> array['a','1','b'];
 ?column? 
----------
 "cc"
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #> array['a','z','b'];
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json #> array['1','b'];
 ?column? 
----------
 "cc"
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json #> array['z','b'];
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": null}]'::json #> array['1','b'];
 ?column? 
----------
 null
(1 row)

select '"foo"'::json #> array['z'];
 ?column? 
----------
 
(1 row)

select '42'::json #> array['f2'];
 ?column? 
----------
 
(1 row)

select '42'::json #> array['0'];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> '{}';
         ?column?          
---------------------------
 {"a": {"b":{"c": "foo"}}}
(1 row)

select '[1,2,3]'::json #>> '{}';
 ?column? 
----------
 [1,2,3]
(1 row)

select '"foo"'::json #>> '{}';
 ?column? 
----------
 foo
(1 row)

select '42'::json #>> '{}';
 ?column? 
----------
 42
(1 row)

select 'null'::json #>> '{}';
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a'];
      ?column?      
--------------------
 {"b":{"c": "foo"}}
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a', null];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a', ''];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b'];
   ?column?   
--------------
 {"c": "foo"}
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b','c'];
 ?column? 
----------
 foo
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b','c','d'];
 ?column? 
----------
 
(1 row)

select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','z','c'];
 ?column? 
----------
 
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #>> array['a','1','b'];
 ?column? 
----------
 cc
(1 row)

select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #>> array['a','z','b'];
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json #>> array['1','b'];
 ?column? 
----------
 cc
(1 row)

select '[{"b": "c"}, {"b": "cc"}]'::json #>> array['z','b'];
 ?column? 
----------
 
(1 row)

select '[{"b": "c"}, {"b": null}]'::json #>> array['1','b'];
 ?column? 
----------
 
(1 row)

select '"foo"'::json #>> array['z'];
 ?column? 
----------
 
(1 row)

select '42'::json #>> array['f2'];
 ?column? 
----------
 
(1 row)

select '42'::json #>> array['0'];
 ?column? 
----------
 
(1 row)

-- array_elements
select json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
  json_array_elements  
-----------------------
 1
 true
 [1,[2,3]]
 null
 {"f1":1,"f2":[7,8,9]}
 false
 "stringy"
(7 rows)

select * from json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
         value         
-----------------------
 1
 true
 [1,[2,3]]
 null
 {"f1":1,"f2":[7,8,9]}
 false
 "stringy"
(7 rows)

select json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
 json_array_elements_text 
--------------------------
 1
 true
 [1,[2,3]]
 
 {"f1":1,"f2":[7,8,9]}
 false
 stringy
(7 rows)

select * from json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
         value         
-----------------------
 1
 true
 [1,[2,3]]
 
 {"f1":1,"f2":[7,8,9]}
 false
 stringy
(7 rows)

-- populate_record
create type jpop as (a text, b int, c timestamp);
CREATE DOMAIN js_int_not_null  AS int     NOT NULL;
CREATE DOMAIN js_int_array_1d  AS int[]   CHECK(array_length(VALUE, 1) = 3);
CREATE DOMAIN js_int_array_2d  AS int[][] CHECK(array_length(VALUE, 2) = 3);
create type j_unordered_pair as (x int, y int);
create domain j_ordered_pair as j_unordered_pair check((value).x <= (value).y);
CREATE TYPE jsrec AS (
	i	int,
	ia	_int4,
	ia1	int[],
	ia2	int[][],
	ia3	int[][][],
	ia1d	js_int_array_1d,
	ia2d	js_int_array_2d,
	t	text,
	ta	text[],
	c	char(10),
	ca	char(10)[],
	ts	timestamp,
	js	json,
	jsb	jsonb,
	jsa	json[],
	rec	jpop,
	reca	jpop[]
);
CREATE TYPE jsrec_i_not_null AS (
	i	js_int_not_null
);
select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
   a    | b | c 
--------+---+---
 blurfl |   | 
(1 row)

select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
   a    | b |            c             
--------+---+--------------------------
 blurfl | 3 | Mon Dec 31 15:30:56 2012
(1 row)

select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
   a    | b | c 
--------+---+---
 blurfl |   | 
(1 row)

select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
   a    | b |            c             
--------+---+--------------------------
 blurfl | 3 | Mon Dec 31 15:30:56 2012
(1 row)

select * from json_populate_record(null::jpop,'{"a":[100,200,false],"x":43.2}') q;
        a        | b | c 
-----------------+---+---
 [100,200,false] |   | 
(1 row)

select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":[100,200,false],"x":43.2}') q;
        a        | b |            c             
-----------------+---+--------------------------
 [100,200,false] | 3 | Mon Dec 31 15:30:56 2012
(1 row)

select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"c":[100,200,false],"x":43.2}') q;
ERROR:  invalid input syntax for type timestamp: "[100,200,false]"
select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{}') q;
 a | b |            c             
---+---+--------------------------
 x | 3 | Mon Dec 31 15:30:56 2012
(1 row)

SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"x": 43.2}') q;
ERROR:  domain js_int_not_null does not allow null values
SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"i": null}') q;
ERROR:  domain js_int_not_null does not allow null values
SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"i": 12345}') q;
   i   
-------
 12345
(1 row)

SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": null}') q;
 ia 
----
 
(1 row)

SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "ia".
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [1, "2", null, 4]}') q;
      ia      
--------------
 {1,2,NULL,4}
(1 row)

SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1, 2], [3, 4]]}') q;
      ia       
---------------
 {{1,2},{3,4}}
(1 row)

SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1], 2]}') q;
ERROR:  expected JSON array
HINT:  See the array element [1] of key "ia".
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1], [2, 3]]}') q;
ERROR:  malformed JSON array
DETAIL:  Multidimensional arrays must have sub-arrays with matching dimensions.
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": "{1,2,3}"}') q;
   ia    
---------
 {1,2,3}
(1 row)

SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": null}') q;
 ia1 
-----
 
(1 row)

SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "ia1".
SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": [1, "2", null, 4]}') q;
     ia1      
--------------
 {1,2,NULL,4}
(1 row)

SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": [[1, 2, 3]]}') q;
    ia1    
-----------
 {{1,2,3}}
(1 row)

SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": null}') q;
 ia1d 
------
 
(1 row)

SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "ia1d".
SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": [1, "2", null, 4]}') q;
ERROR:  value for domain js_int_array_1d violates check constraint "js_int_array_1d_check"
SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": [1, "2", null]}') q;
    ia1d    
------------
 {1,2,NULL}
(1 row)

SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [1, "2", null, 4]}') q;
     ia2      
--------------
 {1,2,NULL,4}
(1 row)

SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], [null, 4]]}') q;
       ia2        
------------------
 {{1,2},{NULL,4}}
(1 row)

SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[], []]}') q;
 ia2 
-----
 {}
(1 row)

SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], [3]]}') q;
ERROR:  malformed JSON array
DETAIL:  Multidimensional arrays must have sub-arrays with matching dimensions.
SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], 3, 4]}') q;
ERROR:  expected JSON array
HINT:  See the array element [1] of key "ia2".
SELECT ia2d FROM json_populate_record(NULL::jsrec, '{"ia2d": [[1, "2"], [null, 4]]}') q;
ERROR:  value for domain js_int_array_2d violates check constraint "js_int_array_2d_check"
SELECT ia2d FROM json_populate_record(NULL::jsrec, '{"ia2d": [[1, "2", 3], [null, 5, 6]]}') q;
         ia2d         
----------------------
 {{1,2,3},{NULL,5,6}}
(1 row)

SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [1, "2", null, 4]}') q;
     ia3      
--------------
 {1,2,NULL,4}
(1 row)

SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [[1, 2], [null, 4]]}') q;
       ia3        
------------------
 {{1,2},{NULL,4}}
(1 row)

SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[], []], [[], []], [[], []] ]}') q;
 ia3 
-----
 {}
(1 row)

SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2]], [[3, 4]] ]}') q;
        ia3        
-------------------
 {{{1,2}},{{3,4}}}
(1 row)

SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2], [3, 4]], [[5, 6], [7, 8]] ]}') q;
              ia3              
-------------------------------
 {{{1,2},{3,4}},{{5,6},{7,8}}}
(1 row)

SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2], [3, 4]], [[5, 6], [7, 8], [9, 10]] ]}') q;
ERROR:  malformed JSON array
DETAIL:  Multidimensional arrays must have sub-arrays with matching dimensions.
SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": null}') q;
 ta 
----
 
(1 row)

SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "ta".
SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": [1, "2", null, 4]}') q;
      ta      
--------------
 {1,2,NULL,4}
(1 row)

SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": [[1, 2, 3], {"k": "v"}]}') q;
ERROR:  expected JSON array
HINT:  See the array element [1] of key "ta".
SELECT c FROM json_populate_record(NULL::jsrec, '{"c": null}') q;
 c 
---
 
(1 row)

SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaa"}') q;
     c      
------------
 aaa       
(1 row)

SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaaaaaaaaa"}') q;
     c      
------------
 aaaaaaaaaa
(1 row)

SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaaaaaaaaaaaa"}') q;
ERROR:  value too long for type character(10)
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": null}') q;
 ca 
----
 
(1 row)

SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "ca".
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": [1, "2", null, 4]}') q;
                      ca                       
-----------------------------------------------
 {"1         ","2         ",NULL,"4         "}
(1 row)

SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": ["aaaaaaaaaaaaaaaa"]}') q;
ERROR:  value too long for type character(10)
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": [[1, 2, 3], {"k": "v"}]}') q;
ERROR:  expected JSON array
HINT:  See the array element [1] of key "ca".
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": null}') q;
 js 
----
 
(1 row)

SELECT js FROM json_populate_record(NULL::jsrec, '{"js": true}') q;
  js  
------
 true
(1 row)

SELECT js FROM json_populate_record(NULL::jsrec, '{"js": 123.45}') q;
   js   
--------
 123.45
(1 row)

SELECT js FROM json_populate_record(NULL::jsrec, '{"js": "123.45"}') q;
    js    
----------
 "123.45"
(1 row)

SELECT js FROM json_populate_record(NULL::jsrec, '{"js": "abc"}') q;
  js   
-------
 "abc"
(1 row)

SELECT js FROM json_populate_record(NULL::jsrec, '{"js": [123, "123", null, {"key": "value"}]}') q;
                  js                  
--------------------------------------
 [123, "123", null, {"key": "value"}]
(1 row)

SELECT js FROM json_populate_record(NULL::jsrec, '{"js": {"a": "bbb", "b": null, "c": 123.45}}') q;
                  js                  
--------------------------------------
 {"a": "bbb", "b": null, "c": 123.45}
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": null}') q;
 jsb 
-----
 
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": true}') q;
 jsb  
------
 true
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": 123.45}') q;
  jsb   
--------
 123.45
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": "123.45"}') q;
   jsb    
----------
 "123.45"
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": "abc"}') q;
  jsb  
-------
 "abc"
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": [123, "123", null, {"key": "value"}]}') q;
                 jsb                  
--------------------------------------
 [123, "123", null, {"key": "value"}]
(1 row)

SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": {"a": "bbb", "b": null, "c": 123.45}}') q;
                 jsb                  
--------------------------------------
 {"a": "bbb", "b": null, "c": 123.45}
(1 row)

SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": null}') q;
 jsa 
-----
 
(1 row)

SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "jsa".
SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": [1, "2", null, 4]}') q;
        jsa         
--------------------
 {1,"\"2\"",NULL,4}
(1 row)

SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": ["aaa", null, [1, 2, "3", {}], { "k" : "v" }]}') q;
                           jsa                            
----------------------------------------------------------
 {"\"aaa\"",NULL,"[1, 2, \"3\", {}]","{ \"k\" : \"v\" }"}
(1 row)

SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": 123}') q;
ERROR:  cannot call populate_composite on a scalar
SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": [1, 2]}') q;
ERROR:  cannot call populate_composite on an array
SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2}}') q;
                rec                
-----------------------------------
 (abc,,"Thu Jan 02 00:00:00 2003")
(1 row)

SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": "(abc,42,01.02.2003)"}') q;
                 rec                 
-------------------------------------
 (abc,42,"Thu Jan 02 00:00:00 2003")
(1 row)

SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": 123}') q;
ERROR:  expected JSON array
HINT:  See the value of key "reca".
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": [1, 2]}') q;
ERROR:  cannot call populate_composite on a scalar
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": [{"a": "abc", "b": 456}, null, {"c": "01.02.2003", "x": 43.2}]}') q;
                          reca                          
--------------------------------------------------------
 {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
(1 row)

SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": ["(abc,42,01.02.2003)"]}') q;
                   reca                    
-------------------------------------------
 {"(abc,42,\"Thu Jan 02 00:00:00 2003\")"}
(1 row)

SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": "{\"(abc,42,01.02.2003)\"}"}') q;
                   reca                    
-------------------------------------------
 {"(abc,42,\"Thu Jan 02 00:00:00 2003\")"}
(1 row)

SELECT rec FROM json_populate_record(
	row(NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
		row('x',3,'2012-12-31 15:30:56')::jpop,NULL)::jsrec,
	'{"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2}}'
) q;
                rec                 
------------------------------------
 (abc,3,"Thu Jan 02 00:00:00 2003")
(1 row)

-- anonymous record type
SELECT json_populate_record(null::record, '{"x": 0, "y": 1}');
ERROR:  could not determine row type for result of json_populate_record
HINT:  Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
SELECT json_populate_record(row(1,2), '{"f1": 0, "f2": 1}');
 json_populate_record 
----------------------
 (0,1)
(1 row)

SELECT * FROM
  json_populate_record(null::record, '{"x": 776}') AS (x int, y int);
  x  | y 
-----+---
 776 |  
(1 row)

-- composite domain
SELECT json_populate_record(null::j_ordered_pair, '{"x": 0, "y": 1}');
 json_populate_record 
----------------------
 (0,1)
(1 row)

SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 0}');
 json_populate_record 
----------------------
 (0,2)
(1 row)

SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 1, "y": 0}');
ERROR:  value for domain j_ordered_pair violates check constraint "j_ordered_pair_check"
-- populate_recordset
select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
   a    | b |            c             
--------+---+--------------------------
 blurfl |   | 
        | 3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
   a    | b  |            c             
--------+----+--------------------------
 blurfl | 99 | 
 def    |  3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
   a    | b |            c             
--------+---+--------------------------
 blurfl |   | 
        | 3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
   a    | b  |            c             
--------+----+--------------------------
 blurfl | 99 | 
 def    |  3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
       a       | b  |            c             
---------------+----+--------------------------
 [100,200,300] | 99 | 
 {"z":true}    |  3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(row('def',99,null)::jpop,'[{"c":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
ERROR:  invalid input syntax for type timestamp: "[100,200,300]"
create type jpop2 as (a int, b json, c int, d int);
select * from json_populate_recordset(null::jpop2, '[{"a":2,"c":3,"b":{"z":4},"d":6}]') q;
 a |    b    | c | d 
---+---------+---+---
 2 | {"z":4} | 3 | 6
(1 row)

select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
   a    | b |            c             
--------+---+--------------------------
 blurfl |   | 
        | 3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
   a    | b  |            c             
--------+----+--------------------------
 blurfl | 99 | 
 def    |  3 | Fri Jan 20 10:42:53 2012
(2 rows)

select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
       a       | b  |            c             
---------------+----+--------------------------
 [100,200,300] | 99 | 
 {"z":true}    |  3 | Fri Jan 20 10:42:53 2012
(2 rows)

-- anonymous record type
SELECT json_populate_recordset(null::record, '[{"x": 0, "y": 1}]');
ERROR:  could not determine row type for result of json_populate_recordset
HINT:  Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
SELECT json_populate_recordset(row(1,2), '[{"f1": 0, "f2": 1}]');
 json_populate_recordset 
-------------------------
 (0,1)
(1 row)

SELECT i, json_populate_recordset(row(i,50), '[{"f1":"42"},{"f2":"43"}]')
FROM (VALUES (1),(2)) v(i);
 i | json_populate_recordset 
---+-------------------------
 1 | (42,50)
 1 | (1,43)
 2 | (42,50)
 2 | (2,43)
(4 rows)

SELECT * FROM
  json_populate_recordset(null::record, '[{"x": 776}]') AS (x int, y int);
  x  | y 
-----+---
 776 |  
(1 row)

-- empty array is a corner case
SELECT json_populate_recordset(null::record, '[]');
ERROR:  could not determine row type for result of json_populate_recordset
HINT:  Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
SELECT json_populate_recordset(row(1,2), '[]');
 json_populate_recordset 
-------------------------
(0 rows)

SELECT * FROM json_populate_recordset(NULL::jpop,'[]') q;
 a | b | c 
---+---+---
(0 rows)

SELECT * FROM
  json_populate_recordset(null::record, '[]') AS (x int, y int);
 x | y 
---+---
(0 rows)

-- composite domain
SELECT json_populate_recordset(null::j_ordered_pair, '[{"x": 0, "y": 1}]');
 json_populate_recordset 
-------------------------
 (0,1)
(1 row)

SELECT json_populate_recordset(row(1,2)::j_ordered_pair, '[{"x": 0}, {"y": 3}]');
 json_populate_recordset 
-------------------------
 (0,2)
 (1,3)
(2 rows)

SELECT json_populate_recordset(row(1,2)::j_ordered_pair, '[{"x": 1, "y": 0}]');
ERROR:  value for domain j_ordered_pair violates check constraint "j_ordered_pair_check"
-- negative cases where the wrong record type is supplied
select * from json_populate_recordset(row(0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
ERROR:  function return row and query-specified return row do not match
DETAIL:  Returned row contains 1 attribute, but query expects 2.
select * from json_populate_recordset(row(0::int,0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
ERROR:  function return row and query-specified return row do not match
DETAIL:  Returned type integer at ordinal position 1, but query expects text.
select * from json_populate_recordset(row(0::int,0::int,0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
ERROR:  function return row and query-specified return row do not match
DETAIL:  Returned row contains 3 attributes, but query expects 2.
select * from json_populate_recordset(row(1000000000::int,50::int),'[{"b":"2"},{"a":"3"}]') q (a text, b text);
ERROR:  function return row and query-specified return row do not match
DETAIL:  Returned type integer at ordinal position 1, but query expects text.
-- test type info caching in json_populate_record()
CREATE TEMP TABLE jspoptest (js json);
INSERT INTO jspoptest
SELECT '{
	"jsa": [1, "2", null, 4],
	"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2},
	"reca": [{"a": "abc", "b": 456}, null, {"c": "01.02.2003", "x": 43.2}]
}'::json
FROM generate_series(1, 3);
SELECT (json_populate_record(NULL::jsrec, js)).* FROM jspoptest;
 i | ia | ia1 | ia2 | ia3 | ia1d | ia2d | t | ta | c | ca | ts | js | jsb |        jsa         |                rec                |                          reca                          
---+----+-----+-----+-----+------+------+---+----+---+----+----+----+-----+--------------------+-----------------------------------+--------------------------------------------------------
   |    |     |     |     |      |      |   |    |   |    |    |    |     | {1,"\"2\"",NULL,4} | (abc,,"Thu Jan 02 00:00:00 2003") | {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
   |    |     |     |     |      |      |   |    |   |    |    |    |     | {1,"\"2\"",NULL,4} | (abc,,"Thu Jan 02 00:00:00 2003") | {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
   |    |     |     |     |      |      |   |    |   |    |    |    |     | {1,"\"2\"",NULL,4} | (abc,,"Thu Jan 02 00:00:00 2003") | {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
(3 rows)

DROP TYPE jsrec;
DROP TYPE jsrec_i_not_null;
DROP DOMAIN js_int_not_null;
DROP DOMAIN js_int_array_1d;
DROP DOMAIN js_int_array_2d;
DROP DOMAIN j_ordered_pair;
DROP TYPE j_unordered_pair;
--json_typeof() function
select value, json_typeof(value)
  from (values (json '123.4'),
               (json '-1'),
               (json '"foo"'),
               (json 'true'),
               (json 'false'),
               (json 'null'),
               (json '[1, 2, 3]'),
               (json '[]'),
               (json '{"x":"foo", "y":123}'),
               (json '{}'),
               (NULL::json))
      as data(value);
        value         | json_typeof 
----------------------+-------------
 123.4                | number
 -1                   | number
 "foo"                | string
 true                 | boolean
 false                | boolean
 null                 | null
 [1, 2, 3]            | array
 []                   | array
 {"x":"foo", "y":123} | object
 {}                   | object
                      | 
(11 rows)

-- json_build_array, json_build_object, json_object_agg
SELECT json_build_array('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
                           json_build_array                            
-----------------------------------------------------------------------
 ["a", 1, "b", 1.2, "c", true, "d", null, "e", {"x": 3, "y": [1,2,3]}]
(1 row)

SELECT json_build_array('a', NULL); -- ok
 json_build_array 
------------------
 ["a", null]
(1 row)

SELECT json_build_array(VARIADIC NULL::text[]); -- ok
 json_build_array 
------------------
 
(1 row)

SELECT json_build_array(VARIADIC '{}'::text[]); -- ok
 json_build_array 
------------------
 []
(1 row)

SELECT json_build_array(VARIADIC '{a,b,c}'::text[]); -- ok
 json_build_array 
------------------
 ["a", "b", "c"]
(1 row)

SELECT json_build_array(VARIADIC ARRAY['a', NULL]::text[]); -- ok
 json_build_array 
------------------
 ["a", null]
(1 row)

SELECT json_build_array(VARIADIC '{1,2,3,4}'::text[]); -- ok
   json_build_array   
----------------------
 ["1", "2", "3", "4"]
(1 row)

SELECT json_build_array(VARIADIC '{1,2,3,4}'::int[]); -- ok
 json_build_array 
------------------
 [1, 2, 3, 4]
(1 row)

SELECT json_build_array(VARIADIC '{{1,4},{2,5},{3,6}}'::int[][]); -- ok
  json_build_array  
--------------------
 [1, 4, 2, 5, 3, 6]
(1 row)

SELECT json_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
                             json_build_object                              
----------------------------------------------------------------------------
 {"a" : 1, "b" : 1.2, "c" : true, "d" : null, "e" : {"x": 3, "y": [1,2,3]}}
(1 row)

SELECT json_build_object(
       'a', json_build_object('b',false,'c',99),
       'd', json_build_object('e',array[9,8,7]::int[],
           'f', (select row_to_json(r) from ( select relkind, oid::regclass as name from pg_class where relname = 'pg_class') r)));
                                        json_build_object                                        
-------------------------------------------------------------------------------------------------
 {"a" : {"b" : false, "c" : 99}, "d" : {"e" : [9,8,7], "f" : {"relkind":"r","name":"pg_class"}}}
(1 row)

SELECT json_build_object('{a,b,c}'::text[]); -- error
ERROR:  argument list must have even number of elements
HINT:  The arguments of json_build_object() must consist of alternating keys and values.
SELECT json_build_object('{a,b,c}'::text[], '{d,e,f}'::text[]); -- error, key cannot be array
ERROR:  key value must be scalar, not array, composite, or json
SELECT json_build_object('a', 'b', 'c'); -- error
ERROR:  argument list must have even number of elements
HINT:  The arguments of json_build_object() must consist of alternating keys and values.
SELECT json_build_object(NULL, 'a'); -- error, key cannot be NULL
ERROR:  argument 1 cannot be null
HINT:  Object keys should be text.
SELECT json_build_object('a', NULL); -- ok
 json_build_object 
-------------------
 {"a" : null}
(1 row)

SELECT json_build_object(VARIADIC NULL::text[]); -- ok
 json_build_object 
-------------------
 
(1 row)

SELECT json_build_object(VARIADIC '{}'::text[]); -- ok
 json_build_object 
-------------------
 {}
(1 row)

SELECT json_build_object(VARIADIC '{a,b,c}'::text[]); -- error
ERROR:  argument list must have even number of elements
HINT:  The arguments of json_build_object() must consist of alternating keys and values.
SELECT json_build_object(VARIADIC ARRAY['a', NULL]::text[]); -- ok
 json_build_object 
-------------------
 {"a" : null}
(1 row)

SELECT json_build_object(VARIADIC ARRAY[NULL, 'a']::text[]); -- error, key cannot be NULL
ERROR:  argument 1 cannot be null
HINT:  Object keys should be text.
SELECT json_build_object(VARIADIC '{1,2,3,4}'::text[]); -- ok
   json_build_object    
------------------------
 {"1" : "2", "3" : "4"}
(1 row)

SELECT json_build_object(VARIADIC '{1,2,3,4}'::int[]); -- ok
 json_build_object  
--------------------
 {"1" : 2, "3" : 4}
(1 row)

SELECT json_build_object(VARIADIC '{{1,4},{2,5},{3,6}}'::int[][]); -- ok
      json_build_object      
-----------------------------
 {"1" : 4, "2" : 5, "3" : 6}
(1 row)

-- empty objects/arrays
SELECT json_build_array();
 json_build_array 
------------------
 []
(1 row)

SELECT json_build_object();
 json_build_object 
-------------------
 {}
(1 row)

-- make sure keys are quoted
SELECT json_build_object(1,2);
 json_build_object 
-------------------
 {"1" : 2}
(1 row)

-- keys must be scalar and not null
SELECT json_build_object(null,2);
ERROR:  argument 1 cannot be null
HINT:  Object keys should be text.
SELECT json_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r;
ERROR:  key value must be scalar, not array, composite, or json
SELECT json_build_object(json '{"a":1,"b":2}', 3);
ERROR:  key value must be scalar, not array, composite, or json
SELECT json_build_object('{1,2,3}'::int[], 3);
ERROR:  key value must be scalar, not array, composite, or json
CREATE TEMP TABLE foo (serial_num int, name text, type text);
INSERT INTO foo VALUES (847001,'t15','GE1043');
INSERT INTO foo VALUES (847002,'t16','GE1043');
INSERT INTO foo VALUES (847003,'sub-alpha','GESS90');
SELECT json_build_object('turbines',json_object_agg(serial_num,json_build_object('name',name,'type',type)))
FROM foo;
                                                                            json_build_object                                                                            
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 {"turbines" : { "847001" : {"name" : "t15", "type" : "GE1043"}, "847002" : {"name" : "t16", "type" : "GE1043"}, "847003" : {"name" : "sub-alpha", "type" : "GESS90"} }}
(1 row)

SELECT json_object_agg(name, type) FROM foo;
                        json_object_agg                         
----------------------------------------------------------------
 { "t15" : "GE1043", "t16" : "GE1043", "sub-alpha" : "GESS90" }
(1 row)

INSERT INTO foo VALUES (999999, NULL, 'bar');
SELECT json_object_agg(name, type) FROM foo;
ERROR:  field name must not be null
-- json_object
-- empty object, one dimension
SELECT json_object('{}');
 json_object 
-------------
 {}
(1 row)

-- empty object, two dimensions
SELECT json_object('{}', '{}');
 json_object 
-------------
 {}
(1 row)

-- one dimension
SELECT json_object('{a,1,b,2,3,NULL,"d e f","a b c"}');
                      json_object                      
-------------------------------------------------------
 {"a" : "1", "b" : "2", "3" : null, "d e f" : "a b c"}
(1 row)

-- same but with two dimensions
SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
                      json_object                      
-------------------------------------------------------
 {"a" : "1", "b" : "2", "3" : null, "d e f" : "a b c"}
(1 row)

-- odd number error
SELECT json_object('{a,b,c}');
ERROR:  array must have even number of elements
-- one column error
SELECT json_object('{{a},{b}}');
ERROR:  array must have two columns
-- too many columns error
SELECT json_object('{{a,b,c},{b,c,d}}');
ERROR:  array must have two columns
-- too many dimensions error
SELECT json_object('{{{a,b},{c,d}},{{b,c},{d,e}}}');
ERROR:  wrong number of array subscripts
--two argument form of json_object
select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}');
                     json_object                      
------------------------------------------------------
 {"a" : "1", "b" : "2", "c" : "3", "d e f" : "a b c"}
(1 row)

-- too many dimensions
SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}', '{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
ERROR:  wrong number of array subscripts
-- mismatched dimensions
select json_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}');
ERROR:  mismatched array dimensions
select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}');
ERROR:  mismatched array dimensions
-- null key error
select json_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}');
ERROR:  null value not allowed for object key
-- empty key is allowed
select json_object('{a,b,"","d e f"}','{1,2,3,"a b c"}');
                     json_object                     
-----------------------------------------------------
 {"a" : "1", "b" : "2", "" : "3", "d e f" : "a b c"}
(1 row)

-- json_to_record and json_to_recordset
select * from json_to_record('{"a":1,"b":"foo","c":"bar"}')
    as x(a int, b text, d text);
 a |  b  | d 
---+-----+---
 1 | foo | 
(1 row)

select * from json_to_recordset('[{"a":1,"b":"foo","d":false},{"a":2,"b":"bar","c":true}]')
    as x(a int, b text, c boolean);
 a |  b  | c 
---+-----+---
 1 | foo | 
 2 | bar | t
(2 rows)

select * from json_to_recordset('[{"a":1,"b":{"d":"foo"},"c":true},{"a":2,"c":false,"b":{"d":"bar"}}]')
    as x(a int, b json, c boolean);
 a |      b      | c 
---+-------------+---
 1 | {"d":"foo"} | t
 2 | {"d":"bar"} | f
(2 rows)

select *, c is null as c_is_null
from json_to_record('{"a":1, "b":{"c":16, "d":2}, "x":8, "ca": ["1 2", 3], "ia": [[1,2],[3,4]], "r": {"a": "aaa", "b": 123}}'::json)
    as t(a int, b json, c text, x int, ca char(5)[], ia int[][], r jpop);
 a |        b        | c | x |        ca         |      ia       |     r      | c_is_null 
---+-----------------+---+---+-------------------+---------------+------------+-----------
 1 | {"c":16, "d":2} |   | 8 | {"1 2  ","3    "} | {{1,2},{3,4}} | (aaa,123,) | t
(1 row)

select *, c is null as c_is_null
from json_to_recordset('[{"a":1, "b":{"c":16, "d":2}, "x":8}]'::json)
    as t(a int, b json, c text, x int);
 a |        b        | c | x | c_is_null 
---+-----------------+---+---+-----------
 1 | {"c":16, "d":2} |   | 8 | t
(1 row)

select * from json_to_record('{"ia": null}') as x(ia _int4);
 ia 
----
 
(1 row)

select * from json_to_record('{"ia": 123}') as x(ia _int4);
ERROR:  expected JSON array
HINT:  See the value of key "ia".
select * from json_to_record('{"ia": [1, "2", null, 4]}') as x(ia _int4);
      ia      
--------------
 {1,2,NULL,4}
(1 row)

select * from json_to_record('{"ia": [[1, 2], [3, 4]]}') as x(ia _int4);
      ia       
---------------
 {{1,2},{3,4}}
(1 row)

select * from json_to_record('{"ia": [[1], 2]}') as x(ia _int4);
ERROR:  expected JSON array
HINT:  See the array element [1] of key "ia".
select * from json_to_record('{"ia": [[1], [2, 3]]}') as x(ia _int4);
ERROR:  malformed JSON array
DETAIL:  Multidimensional arrays must have sub-arrays with matching dimensions.
select * from json_to_record('{"ia2": [1, 2, 3]}') as x(ia2 int[][]);
   ia2   
---------
 {1,2,3}
(1 row)

select * from json_to_record('{"ia2": [[1, 2], [3, 4]]}') as x(ia2 int4[][]);
      ia2      
---------------
 {{1,2},{3,4}}
(1 row)

select * from json_to_record('{"ia2": [[[1], [2], [3]]]}') as x(ia2 int4[][]);
       ia2       
-----------------
 {{{1},{2},{3}}}
(1 row)

select * from json_to_record('{"out": {"key": 1}}') as x(out json);
    out     
------------
 {"key": 1}
(1 row)

select * from json_to_record('{"out": [{"key": 1}]}') as x(out json);
     out      
--------------
 [{"key": 1}]
(1 row)

select * from json_to_record('{"out": "{\"key\": 1}"}') as x(out json);
      out       
----------------
 "{\"key\": 1}"
(1 row)

select * from json_to_record('{"out": {"key": 1}}') as x(out jsonb);
    out     
------------
 {"key": 1}
(1 row)

select * from json_to_record('{"out": [{"key": 1}]}') as x(out jsonb);
     out      
--------------
 [{"key": 1}]
(1 row)

select * from json_to_record('{"out": "{\"key\": 1}"}') as x(out jsonb);
      out       
----------------
 "{\"key\": 1}"
(1 row)

-- json_strip_nulls
select json_strip_nulls(null);
 json_strip_nulls 
------------------
 
(1 row)

select json_strip_nulls('1');
 json_strip_nulls 
------------------
 1
(1 row)

select json_strip_nulls('"a string"');
 json_strip_nulls 
------------------
 "a string"
(1 row)

select json_strip_nulls('null');
 json_strip_nulls 
------------------
 null
(1 row)

select json_strip_nulls('[1,2,null,3,4]');
 json_strip_nulls 
------------------
 [1,2,null,3,4]
(1 row)

select json_strip_nulls('{"a":1,"b":null,"c":[2,null,3],"d":{"e":4,"f":null}}');
          json_strip_nulls          
------------------------------------
 {"a":1,"c":[2,null,3],"d":{"e":4}}
(1 row)

select json_strip_nulls('[1,{"a":1,"b":null,"c":2},3]');
  json_strip_nulls   
---------------------
 [1,{"a":1,"c":2},3]
(1 row)

-- an empty object is not null and should not be stripped
select json_strip_nulls('{"a": {"b": null, "c": null}, "d": {} }');
 json_strip_nulls 
------------------
 {"a":{},"d":{}}
(1 row)

-- json to tsvector
select to_tsvector('{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
                                to_tsvector                                
---------------------------------------------------------------------------
 'aaa':1 'bbb':2 'ccc':4 'ddd':3 'eee':6 'fff':7 'ggg':8 'hhh':10 'iii':11
(1 row)

-- json to tsvector with config
select to_tsvector('simple', '{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
                                to_tsvector                                
---------------------------------------------------------------------------
 'aaa':1 'bbb':2 'ccc':4 'ddd':3 'eee':6 'fff':7 'ggg':8 'hhh':10 'iii':11
(1 row)

-- json to tsvector with stop words
select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
                                to_tsvector                                 
----------------------------------------------------------------------------
 'aaa':1 'bbb':3 'ccc':5 'ddd':4 'eee':8 'fff':9 'ggg':10 'hhh':12 'iii':13
(1 row)

-- json to tsvector with numeric values
select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": 123, "c": 456}'::json);
           to_tsvector           
---------------------------------
 'aaa':1 'bbb':3 'ccc':5 'ddd':4
(1 row)

-- json_to_tsvector
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"all"');
                                    json_to_tsvector                                    
----------------------------------------------------------------------------------------
 '123':8 '456':12 'aaa':2 'b':6 'bbb':4 'c':10 'd':14 'f':18 'fals':20 'g':22 'true':16
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"key"');
        json_to_tsvector        
--------------------------------
 'b':2 'c':4 'd':6 'f':8 'g':10
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"string"');
 json_to_tsvector 
------------------
 'aaa':1 'bbb':3
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"numeric"');
 json_to_tsvector 
------------------
 '123':1 '456':3
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"boolean"');
 json_to_tsvector  
-------------------
 'fals':3 'true':1
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["string", "numeric"]');
        json_to_tsvector         
---------------------------------
 '123':5 '456':7 'aaa':1 'bbb':3
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"all"');
                                    json_to_tsvector                                    
----------------------------------------------------------------------------------------
 '123':8 '456':12 'aaa':2 'b':6 'bbb':4 'c':10 'd':14 'f':18 'fals':20 'g':22 'true':16
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"key"');
        json_to_tsvector        
--------------------------------
 'b':2 'c':4 'd':6 'f':8 'g':10
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"string"');
 json_to_tsvector 
------------------
 'aaa':1 'bbb':3
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"numeric"');
 json_to_tsvector 
------------------
 '123':1 '456':3
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"boolean"');
 json_to_tsvector  
-------------------
 'fals':3 'true':1
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["string", "numeric"]');
        json_to_tsvector         
---------------------------------
 '123':5 '456':7 'aaa':1 'bbb':3
(1 row)

-- to_tsvector corner cases
select to_tsvector('""'::json);
 to_tsvector 
-------------
 
(1 row)

select to_tsvector('{}'::json);
 to_tsvector 
-------------
 
(1 row)

select to_tsvector('[]'::json);
 to_tsvector 
-------------
 
(1 row)

select to_tsvector('null'::json);
 to_tsvector 
-------------
 
(1 row)

-- json_to_tsvector corner cases
select json_to_tsvector('""'::json, '"all"');
 json_to_tsvector 
------------------
 
(1 row)

select json_to_tsvector('{}'::json, '"all"');
 json_to_tsvector 
------------------
 
(1 row)

select json_to_tsvector('[]'::json, '"all"');
 json_to_tsvector 
------------------
 
(1 row)

select json_to_tsvector('null'::json, '"all"');
 json_to_tsvector 
------------------
 
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '""');
ERROR:  wrong flag in flag array: ""
HINT:  Possible values are: "string", "numeric", "boolean", "key", and "all".
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '{}');
ERROR:  wrong flag type, only arrays and scalars are allowed
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '[]');
 json_to_tsvector 
------------------
 
(1 row)

select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, 'null');
ERROR:  flag array element is not a string
HINT:  Possible values are: "string", "numeric", "boolean", "key", and "all".
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["all", null]');
ERROR:  flag array element is not a string
HINT:  Possible values are: "string", "numeric", "boolean", "key", and "all".
-- ts_headline for json
select ts_headline('{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
                                               ts_headline                                               
---------------------------------------------------------------------------------------------------------
 {"a":"aaa <b>bbb</b>","b":{"c":"ccc <b>ddd</b> fff","c1":"ccc1 ddd1"},"d":["ggg <b>hhh</b>","iii jjj"]}
(1 row)

select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
                                      ts_headline                                       
----------------------------------------------------------------------------------------
 {"a":"aaa <b>bbb</b>","b":{"c":"ccc <b>ddd</b> fff"},"d":["ggg <b>hhh</b>","iii jjj"]}
(1 row)

select ts_headline('{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'), 'StartSel = <, StopSel = >');
                                       ts_headline                                        
------------------------------------------------------------------------------------------
 {"a":"aaa <bbb>","b":{"c":"ccc <ddd> fff","c1":"ccc1 ddd1"},"d":["ggg <hhh>","iii jjj"]}
(1 row)

select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'), 'StartSel = <, StopSel = >');
                                       ts_headline                                        
------------------------------------------------------------------------------------------
 {"a":"aaa <bbb>","b":{"c":"ccc <ddd> fff","c1":"ccc1 ddd1"},"d":["ggg <hhh>","iii jjj"]}
(1 row)

-- corner cases for ts_headline with json
select ts_headline('null'::json, tsquery('aaa & bbb'));
 ts_headline 
-------------
 null
(1 row)

select ts_headline('{}'::json, tsquery('aaa & bbb'));
 ts_headline 
-------------
 {}
(1 row)

select ts_headline('[]'::json, tsquery('aaa & bbb'));
 ts_headline 
-------------
 []
(1 row)