text: -- Strings.
  SELECT '""'::json;				-- OK.
  SELECT $$''$$::json;			-- ERROR, single quotes are not allowed
  SELECT '"abc"'::json;			-- OK
  SELECT '"abc'::json;			-- ERROR, quotes not closed
  SELECT '"abc
  def"'::json;					-- ERROR, unescaped newline in string constant
  SELECT '"\n\"\\"'::json;		-- OK, legal escapes
  SELECT '"\v"'::json;			-- ERROR, not a valid JSON escape
  SELECT '"\u"'::json;			-- ERROR, incomplete escape
  SELECT '"\u00"'::json;			-- ERROR, incomplete escape
  SELECT '"\u000g"'::json;		-- ERROR, g is not a hex digit
  SELECT '"\u0000"'::json;		-- OK, legal escape
  SELECT '"\uaBcD"'::json;		-- OK, uppercase and lower case both OK
  
  -- Numbers.
  SELECT '1'::json;				-- OK
  SELECT '0'::json;				-- OK
  SELECT '01'::json;				-- ERROR, not valid according to JSON spec
  SELECT '0.1'::json;				-- OK
  SELECT '9223372036854775808'::json;	-- OK, even though it's too large for int8
  SELECT '1e100'::json;			-- OK
  SELECT '1.3e100'::json;			-- OK
  SELECT '1f2'::json;				-- ERROR
  SELECT '0.x1'::json;			-- ERROR
  SELECT '1.3ex100'::json;		-- ERROR
  
  -- Arrays.
  SELECT '[]'::json;				-- OK
  SELECT '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'::json;  -- OK
  SELECT '[1,2]'::json;			-- OK
  SELECT '[1,2,]'::json;			-- ERROR, trailing comma
  SELECT '[1,2'::json;			-- ERROR, no closing bracket
  SELECT '[1,[2]'::json;			-- ERROR, no closing bracket
  
  -- Objects.
  SELECT '{}'::json;				-- OK
  SELECT '{"abc"}'::json;			-- ERROR, no value
  SELECT '{"abc":1}'::json;		-- OK
  SELECT '{1:"abc"}'::json;		-- ERROR, keys must be strings
  SELECT '{"abc",1}'::json;		-- ERROR, wrong separator
  SELECT '{"abc"=1}'::json;		-- ERROR, totally wrong separator
  SELECT '{"abc"::1}'::json;		-- ERROR, another wrong separator
  SELECT '{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}'::json; -- OK
  SELECT '{"abc":1:2}'::json;		-- ERROR, colon in wrong spot
  SELECT '{"abc":1,3}'::json;		-- ERROR, no value
  
  -- Miscellaneous stuff.
  SELECT 'true'::json;			-- OK
  SELECT 'false'::json;			-- OK
  SELECT 'null'::json;			-- OK
  SELECT ' true '::json;			-- OK, even with extra whitespace
  SELECT 'true false'::json;		-- ERROR, too many values
  SELECT 'true, false'::json;		-- ERROR, too many values
  SELECT 'truf'::json;			-- ERROR, not a keyword
  SELECT 'trues'::json;			-- ERROR, not a keyword
  SELECT ''::json;				-- ERROR, no value
  SELECT '    '::json;			-- ERROR, no value
  
  --constructors
  -- array_to_json
  
  SELECT array_to_json(array(select 1 as a));
  SELECT array_to_json(array_agg(q),false) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
  SELECT array_to_json(array_agg(q),true) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
  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;
  SELECT array_to_json(array_agg(x),false) from generate_series(5,10) x;
  SELECT array_to_json('{{1,5},{99,100}}'::int[]);
  
  -- row_to_json
  SELECT row_to_json(row(1,'foo'));
  
  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;
  
  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;
  
  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;
  
  SELECT row_to_json(row((select array_agg(x) as d from generate_series(5,10) x)),false);
  
  -- to_json, timestamps
  
  select to_json(timestamp '2014-05-28 12:22:35.614298');
  
  BEGIN;
  SET LOCAL TIME ZONE 10.5;
  select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
  SET LOCAL TIME ZONE -8;
  select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
  COMMIT;
  
  select to_json(date '2014-05-28');
  
  select to_json(date 'Infinity');
  select to_json(timestamp 'Infinity');
  select to_json(timestamptz 'Infinity');
  
  --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;
  
  SELECT json_agg(q)
    FROM rows q;
  
  -- non-numeric output
  SELECT row_to_json(q)
  FROM (SELECT 'NaN'::float8 AS "float8field") q;
  
  SELECT row_to_json(q)
  FROM (SELECT 'Infinity'::float8 AS "float8field") q;
  
  SELECT row_to_json(q)
  FROM (SELECT '-Infinity'::float8 AS "float8field") q;
  
  -- 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;
  
  
  -- 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';
  
  SELECT test_json -> 'x'
  FROM test_json
  WHERE json_type = 'array';
  
  SELECT test_json -> 'x'
  FROM test_json
  WHERE json_type = 'object';
  
  SELECT test_json->'field2'
  FROM test_json
  WHERE json_type = 'object';
  
  SELECT test_json->>'field2'
  FROM test_json
  WHERE json_type = 'object';
  
  SELECT test_json -> 2
  FROM test_json
  WHERE json_type = 'scalar';
  
  SELECT test_json -> 2
  FROM test_json
  WHERE json_type = 'array';
  
  SELECT test_json -> 2
  FROM test_json
  WHERE json_type = 'object';
  
  SELECT test_json->>2
  FROM test_json
  WHERE json_type = 'array';
  
  SELECT test_json ->> 6 FROM test_json WHERE json_type = 'array';
  SELECT test_json ->> 7 FROM test_json WHERE json_type = 'array';
  
  SELECT test_json ->> 'field4' FROM test_json WHERE json_type = 'object';
  SELECT test_json ->> 'field5' FROM test_json WHERE json_type = 'object';
  SELECT test_json ->> 'field6' FROM test_json WHERE json_type = 'object';
  
  SELECT json_object_keys(test_json)
  FROM test_json
  WHERE json_type = 'scalar';
  
  SELECT json_object_keys(test_json)
  FROM test_json
  WHERE json_type = 'array';
  
  SELECT json_object_keys(test_json)
  FROM test_json
  WHERE json_type = 'object';
  
  -- 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;
  
  -- nulls
  
  select (test_json->'field3') is null as expect_false
  from test_json
  where json_type = 'object';
  
  select (test_json->>'field3') is null as expect_true
  from test_json
  where json_type = 'object';
  
  select (test_json->3) is null as expect_false
  from test_json
  where json_type = 'array';
  
  select (test_json->>3) is null as expect_true
  from test_json
  where json_type = 'array';
  
  -- corner cases
  
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> null::text;
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> null::int;
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> 1;
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> 'z';
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> '';
  select '[{"b": "c"}, {"b": "cc"}]'::json -> 1;
  select '[{"b": "c"}, {"b": "cc"}]'::json -> 3;
  select '[{"b": "c"}, {"b": "cc"}]'::json -> 'z';
  select '{"a": "c", "b": null}'::json -> 'b';
  select '"foo"'::json -> 1;
  select '"foo"'::json -> 'z';
  
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> null::text;
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> null::int;
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> 1;
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> 'z';
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> '';
  select '[{"b": "c"}, {"b": "cc"}]'::json ->> 1;
  select '[{"b": "c"}, {"b": "cc"}]'::json ->> 3;
  select '[{"b": "c"}, {"b": "cc"}]'::json ->> 'z';
  select '{"a": "c", "b": null}'::json ->> 'b';
  select '"foo"'::json ->> 1;
  select '"foo"'::json ->> 'z';
  
  -- array length
  
  SELECT json_array_length('[1,2,3,{"f1":1,"f2":[5,6]},4]');
  
  SELECT json_array_length('[]');
  
  SELECT json_array_length('{"f1":1,"f2":[5,6]}');
  
  SELECT json_array_length('4');
  
  -- each
  
  select json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null}');
  select * from json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
  
  select json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":"null"}');
  select * from json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
  
  -- extract_path, extract_path_as_text
  
  select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
  select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
  select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
  select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
  select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
  select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
  select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
  select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
  
  -- extract_path nulls
  
  select json_extract_path('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_false;
  select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_true;
  select json_extract_path('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_false;
  select json_extract_path_text('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_true;
  
  -- extract_path operators
  
  select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f4','f6'];
  select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2'];
  select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','0'];
  select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','1'];
  
  select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f4','f6'];
  select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2'];
  select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','0'];
  select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','1'];
  
  -- corner cases for same
  select '{"a": {"b":{"c": "foo"}}}'::json #> '{}';
  select '[1,2,3]'::json #> '{}';
  select '"foo"'::json #> '{}';
  select '42'::json #> '{}';
  select 'null'::json #> '{}';
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a'];
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a', null];
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a', ''];
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b'];
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b','c'];
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b','c','d'];
  select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','z','c'];
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #> array['a','1','b'];
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #> array['a','z','b'];
  select '[{"b": "c"}, {"b": "cc"}]'::json #> array['1','b'];
  select '[{"b": "c"}, {"b": "cc"}]'::json #> array['z','b'];
  select '[{"b": "c"}, {"b": null}]'::json #> array['1','b'];
  select '"foo"'::json #> array['z'];
  select '42'::json #> array['f2'];
  select '42'::json #> array['0'];
  
  select '{"a": {"b":{"c": "foo"}}}'::json #>> '{}';
  select '[1,2,3]'::json #>> '{}';
  select '"foo"'::json #>> '{}';
  select '42'::json #>> '{}';
  select 'null'::json #>> '{}';
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a'];
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a', null];
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a', ''];
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b'];
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b','c'];
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b','c','d'];
  select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','z','c'];
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #>> array['a','1','b'];
  select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #>> array['a','z','b'];
  select '[{"b": "c"}, {"b": "cc"}]'::json #>> array['1','b'];
  select '[{"b": "c"}, {"b": "cc"}]'::json #>> array['z','b'];
  select '[{"b": "c"}, {"b": null}]'::json #>> array['1','b'];
  select '"foo"'::json #>> array['z'];
  select '42'::json #>> array['f2'];
  select '42'::json #>> array['0'];
  
  -- array_elements
  
  select json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
  select * from json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
  select json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
  select * from json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
  
  -- populate_record
  create type jpop as (a text, b int, c timestamp);
  
  select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
  select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
  
  select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
  select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
  
  select * from json_populate_record(null::jpop,'{"a":[100,200,false],"x":43.2}') q;
  select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":[100,200,false],"x":43.2}') q;
  select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"c":[100,200,false],"x":43.2}') q;
  
  -- populate_recordset
  
  select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
  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;
  select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
  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;
  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;
  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;
  
  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;
  
  select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
  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;
  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;
  
  -- handling of unicode surrogate pairs
  
  select json '{ "a":  "\ud83d\ude04\ud83d\udc36" }' -> 'a' as correct_in_utf8;
  select json '{ "a":  "\ud83d\ud83d" }' -> 'a'; -- 2 high surrogates in a row
  select json '{ "a":  "\ude04\ud83d" }' -> 'a'; -- surrogates in wrong order
  select json '{ "a":  "\ud83dX" }' -> 'a'; -- orphan high surrogate
  select json '{ "a":  "\ude04X" }' -> 'a'; -- orphan low surrogate
  
  --handling of simple unicode escapes
  
  select json '{ "a":  "the Copyright \u00a9 sign" }' as correct_in_utf8;
  select json '{ "a":  "dollar \u0024 character" }' as correct_everywhere;
  select json '{ "a":  "dollar \\u0024 character" }' as not_an_escape;
  select json '{ "a":  "null \u0000 escape" }' as not_unescaped;
  select json '{ "a":  "null \\u0000 escape" }' as not_an_escape;
  
  select json '{ "a":  "the Copyright \u00a9 sign" }' ->> 'a' as correct_in_utf8;
  select json '{ "a":  "dollar \u0024 character" }' ->> 'a' as correct_everywhere;
  select json '{ "a":  "dollar \\u0024 character" }' ->> 'a' as not_an_escape;
  select json '{ "a":  "null \u0000 escape" }' ->> 'a' as fails;
  select json '{ "a":  "null \\u0000 escape" }' ->> 'a' as not_an_escape;
  
  --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);
  
  -- 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]}');
  
  SELECT json_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
  
  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)));
  
  
  -- empty objects/arrays
  SELECT json_build_array();
  
  SELECT json_build_object();
  
  -- make sure keys are quoted
  SELECT json_build_object(1,2);
  
  -- keys must be scalar and not null
  SELECT json_build_object(null,2);
  
  SELECT json_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r;
  
  SELECT json_build_object(json '{"a":1,"b":2}', 3);
  
  SELECT json_build_object('{1,2,3}'::int[], 3);
  
  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_object
  
  -- one dimension
  SELECT json_object('{a,1,b,2,3,NULL,"d e f","a b c"}');
  
  -- same but with two dimensions
  SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
  
  -- odd number error
  SELECT json_object('{a,b,c}');
  
  -- one column error
  SELECT json_object('{{a},{b}}');
  
  -- too many columns error
  SELECT json_object('{{a,b,c},{b,c,d}}');
  
  -- too many dimensions error
  SELECT json_object('{{{a,b},{c,d}},{{b,c},{d,e}}}');
  
  --two argument form of json_object
  
  select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}');
  
  -- 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"}}');
  
  -- mismatched dimensions
  
  select json_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}');
  
  select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}');
  
  -- null key error
  
  select json_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}');
  
  -- empty key is allowed
  
  select json_object('{a,b,"","d e f"}','{1,2,3,"a b c"}');
  
  
  -- 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);
  
  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);
  
  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);
  