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
  -- see json_encoding test for input with unicode escapes
  
  -- 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
  
  -- Recursion.
  SET max_stack_depth = '100kB';
  SELECT repeat('[', 10000)::json;
  SELECT repeat('{"a":', 10000)::json;
  RESET max_stack_depth;
  
  -- 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);
  
  -- anyarray column
  
  select to_json(histogram_bounds) histogram_bounds
  from pg_stats
  where attname = 'tmplname' and tablename = 'pg_pltemplate';
  
  -- 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(date '-Infinity');
  select to_json(timestamp 'Infinity');
  select to_json(timestamp '-Infinity');
  select to_json(timestamptz '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 ORDER BY x, y)
    FROM rows q;
  
  UPDATE rows SET x = NULL WHERE x = 1;
  
  SELECT json_agg(q ORDER BY x NULLS FIRST, y)
    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 -> -1
  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 -> -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);
  
  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;
  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;
  
  select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{}') q;
  
  SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"x": 43.2}') q;
  SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"i": null}') q;
  SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"i": 12345}') q;
  
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": null}') q;
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": 123}') q;
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [1, "2", null, 4]}') q;
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1, 2], [3, 4]]}') q;
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1], 2]}') q;
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1], [2, 3]]}') q;
  SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": "{1,2,3}"}') q;
  
  SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": null}') q;
  SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": 123}') q;
  SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": [1, "2", null, 4]}') q;
  SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": [[1, 2, 3]]}') q;
  
  SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": null}') q;
  SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": 123}') q;
  SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": [1, "2", null, 4]}') q;
  SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": [1, "2", null]}') q;
  
  SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [1, "2", null, 4]}') q;
  SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], [null, 4]]}') q;
  SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[], []]}') q;
  SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], [3]]}') q;
  SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], 3, 4]}') q;
  
  SELECT ia2d FROM json_populate_record(NULL::jsrec, '{"ia2d": [[1, "2"], [null, 4]]}') q;
  SELECT ia2d FROM json_populate_record(NULL::jsrec, '{"ia2d": [[1, "2", 3], [null, 5, 6]]}') q;
  
  SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [1, "2", null, 4]}') q;
  SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [[1, 2], [null, 4]]}') q;
  SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[], []], [[], []], [[], []] ]}') q;
  SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2]], [[3, 4]] ]}') q;
  SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2], [3, 4]], [[5, 6], [7, 8]] ]}') q;
  SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2], [3, 4]], [[5, 6], [7, 8], [9, 10]] ]}') q;
  
  SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": null}') q;
  SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": 123}') q;
  SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": [1, "2", null, 4]}') q;
  SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": [[1, 2, 3], {"k": "v"}]}') q;
  
  SELECT c FROM json_populate_record(NULL::jsrec, '{"c": null}') q;
  SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaa"}') q;
  SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaaaaaaaaa"}') q;
  SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaaaaaaaaaaaa"}') q;
  
  SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": null}') q;
  SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": 123}') q;
  SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": [1, "2", null, 4]}') q;
  SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": ["aaaaaaaaaaaaaaaa"]}') q;
  SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": [[1, 2, 3], {"k": "v"}]}') q;
  
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": null}') q;
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": true}') q;
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": 123.45}') q;
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": "123.45"}') q;
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": "abc"}') q;
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": [123, "123", null, {"key": "value"}]}') q;
  SELECT js FROM json_populate_record(NULL::jsrec, '{"js": {"a": "bbb", "b": null, "c": 123.45}}') q;
  
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": null}') q;
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": true}') q;
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": 123.45}') q;
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": "123.45"}') q;
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": "abc"}') q;
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": [123, "123", null, {"key": "value"}]}') q;
  SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": {"a": "bbb", "b": null, "c": 123.45}}') q;
  
  SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": null}') q;
  SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": 123}') q;
  SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": [1, "2", null, 4]}') q;
  SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": ["aaa", null, [1, 2, "3", {}], { "k" : "v" }]}') q;
  
  SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": 123}') q;
  SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": [1, 2]}') q;
  SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2}}') q;
  SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": "(abc,42,01.02.2003)"}') q;
  
  SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": 123}') q;
  SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": [1, 2]}') q;
  SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": [{"a": "abc", "b": 456}, null, {"c": "01.02.2003", "x": 43.2}]}') q;
  SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": ["(abc,42,01.02.2003)"]}') q;
  SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": "{\"(abc,42,01.02.2003)\"}"}') q;
  
  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;
  
  -- anonymous record type
  SELECT json_populate_record(null::record, '{"x": 0, "y": 1}');
  SELECT json_populate_record(row(1,2), '{"f1": 0, "f2": 1}');
  
  -- composite domain
  SELECT json_populate_record(null::j_ordered_pair, '{"x": 0, "y": 1}');
  SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 0}');
  SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 1, "y": 0}');
  
  -- 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;
  
  -- anonymous record type
  SELECT json_populate_recordset(null::record, '[{"x": 0, "y": 1}]');
  SELECT json_populate_recordset(row(1,2), '[{"f1": 0, "f2": 1}]');
  SELECT i, json_populate_recordset(row(i,50), '[{"f1":"42"},{"f2":"43"}]')
  FROM (VALUES (1),(2)) v(i);
  
  -- empty array is a corner case
  SELECT json_populate_recordset(null::record, '[]');
  SELECT json_populate_recordset(row(1,2), '[]');
  SELECT * FROM json_populate_recordset(NULL::jpop,'[]') q;
  
  -- composite domain
  SELECT json_populate_recordset(null::j_ordered_pair, '[{"x": 0, "y": 1}]');
  SELECT json_populate_recordset(row(1,2)::j_ordered_pair, '[{"x": 0}, {"y": 3}]');
  SELECT json_populate_recordset(row(1,2)::j_ordered_pair, '[{"x": 1, "y": 0}]');
  
  -- 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);
  select * from json_populate_recordset(row(0::int,0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
  select * from json_populate_recordset(row(0::int,0::int,0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
  select * from json_populate_recordset(row(1000000000::int,50::int),'[{"b":"2"},{"a":"3"}]') q (a text, b 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;
  
  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);
  
  -- 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_array('a', NULL); -- ok
  SELECT json_build_array(VARIADIC NULL::text[]); -- ok
  SELECT json_build_array(VARIADIC '{}'::text[]); -- ok
  SELECT json_build_array(VARIADIC '{a,b,c}'::text[]); -- ok
  SELECT json_build_array(VARIADIC ARRAY['a', NULL]::text[]); -- ok
  SELECT json_build_array(VARIADIC '{1,2,3,4}'::text[]); -- ok
  SELECT json_build_array(VARIADIC '{1,2,3,4}'::int[]); -- ok
  SELECT json_build_array(VARIADIC '{{1,4},{2,5},{3,6}}'::int[][]); -- ok
  
  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)));
  SELECT json_build_object('{a,b,c}'::text[]); -- error
  SELECT json_build_object('{a,b,c}'::text[], '{d,e,f}'::text[]); -- error, key cannot be array
  SELECT json_build_object('a', 'b', 'c'); -- error
  SELECT json_build_object(NULL, 'a'); -- error, key cannot be NULL
  SELECT json_build_object('a', NULL); -- ok
  SELECT json_build_object(VARIADIC NULL::text[]); -- ok
  SELECT json_build_object(VARIADIC '{}'::text[]); -- ok
  SELECT json_build_object(VARIADIC '{a,b,c}'::text[]); -- error
  SELECT json_build_object(VARIADIC ARRAY['a', NULL]::text[]); -- ok
  SELECT json_build_object(VARIADIC ARRAY[NULL, 'a']::text[]); -- error, key cannot be NULL
  SELECT json_build_object(VARIADIC '{1,2,3,4}'::text[]); -- ok
  SELECT json_build_object(VARIADIC '{1,2,3,4}'::int[]); -- ok
  SELECT json_build_object(VARIADIC '{{1,4},{2,5},{3,6}}'::int[][]); -- ok
  
  -- 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;
  
  SELECT json_object_agg(name, type) FROM foo;
  
  INSERT INTO foo VALUES (999999, NULL, 'bar');
  SELECT json_object_agg(name, type) FROM foo;
  
  -- json_object
  
  -- empty object, one dimension
  SELECT json_object('{}');
  
  -- empty object, two dimensions
  SELECT 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);
  
  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);
  
  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);
  
  select * from json_to_record('{"ia": null}') as x(ia _int4);
  select * from json_to_record('{"ia": 123}') as x(ia _int4);
  select * from json_to_record('{"ia": [1, "2", null, 4]}') as x(ia _int4);
  select * from json_to_record('{"ia": [[1, 2], [3, 4]]}') as x(ia _int4);
  select * from json_to_record('{"ia": [[1], 2]}') as x(ia _int4);
  select * from json_to_record('{"ia": [[1], [2, 3]]}') as x(ia _int4);
  
  select * from json_to_record('{"ia2": [1, 2, 3]}') as x(ia2 int[][]);
  select * from json_to_record('{"ia2": [[1, 2], [3, 4]]}') as x(ia2 int4[][]);
  select * from json_to_record('{"ia2": [[[1], [2], [3]]]}') as x(ia2 int4[][]);
  
  select * from json_to_record('{"out": {"key": 1}}') as x(out json);
  select * from json_to_record('{"out": [{"key": 1}]}') as x(out json);
  select * from json_to_record('{"out": "{\"key\": 1}"}') as x(out json);
  select * from json_to_record('{"out": {"key": 1}}') as x(out jsonb);
  select * from json_to_record('{"out": [{"key": 1}]}') as x(out jsonb);
  select * from json_to_record('{"out": "{\"key\": 1}"}') as x(out jsonb);
  
  -- json_strip_nulls
  
  select json_strip_nulls(null);
  
  select json_strip_nulls('1');
  
  select json_strip_nulls('"a string"');
  
  select json_strip_nulls('null');
  
  select json_strip_nulls('[1,2,null,3,4]');
  
  select json_strip_nulls('{"a":1,"b":null,"c":[2,null,3],"d":{"e":4,"f":null}}');
  
  select json_strip_nulls('[1,{"a":1,"b":null,"c":2},3]');
  
  -- an empty object is not null and should not be stripped
  select json_strip_nulls('{"a": {"b": null, "c": null}, "d": {} }');
  
  -- json to tsvector
  select to_tsvector('{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
  
  -- json to tsvector with config
  select to_tsvector('simple', '{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
  
  -- 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);
  
  -- json to tsvector with numeric values
  select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": 123, "c": 456}'::json);
  
  -- json_to_tsvector
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"all"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"key"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"string"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"numeric"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"boolean"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["string", "numeric"]');
  
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"all"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"key"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"string"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"numeric"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"boolean"');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["string", "numeric"]');
  
  -- ts_vector corner cases
  select to_tsvector('""'::json);
  select to_tsvector('{}'::json);
  select to_tsvector('[]'::json);
  select to_tsvector('null'::json);
  
  -- json_to_tsvector corner cases
  select json_to_tsvector('""'::json, '"all"');
  select json_to_tsvector('{}'::json, '"all"');
  select json_to_tsvector('[]'::json, '"all"');
  select json_to_tsvector('null'::json, '"all"');
  
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '""');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '{}');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '[]');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, 'null');
  select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["all", null]');
  
  -- 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'));
  select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
  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 = >');
  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 = >');
  
  -- corner cases for ts_headline with json
  select ts_headline('null'::json, tsquery('aaa & bbb'));
  select ts_headline('{}'::json, tsquery('aaa & bbb'));
  select ts_headline('[]'::json, tsquery('aaa & bbb'));
  