ERROR: invalid input syntax for type json
LINE 1: SELECT $$''$$::json;
^
-DETAIL: line 1: Token "'" is invalid.
+DETAIL: Token "'" is invalid.
+CONTEXT: JSON data, line 1: '...
SELECT '"abc"'::json; -- OK
json
-------
ERROR: invalid input syntax for type json
LINE 1: SELECT '"abc'::json;
^
-DETAIL: line 1: Token ""abc" is invalid.
+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: line 1: Character "
-" must be escaped.
+DETAIL: Character with value 0x0a must be escaped.
+CONTEXT: JSON data, line 1: "abc
SELECT '"\n\"\\"'::json; -- OK, legal escapes
json
----------
ERROR: invalid input syntax for type json
LINE 1: SELECT '"\v"'::json;
^
-DETAIL: line 1: Invalid escape "\v".
-SELECT '"\u"'::json; -- ERROR, incomplete escape
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\u"'::json;
- ^
-DETAIL: line 1: "\u" must be followed by four hexadecimal digits.
-SELECT '"\u00"'::json; -- ERROR, incomplete escape
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\u00"'::json;
- ^
-DETAIL: line 1: "\u" must be followed by four hexadecimal digits.
-SELECT '"\u000g"'::json; -- ERROR, g is not a hex digit
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\u000g"'::json;
- ^
-DETAIL: line 1: "\u" must be followed by four hexadecimal digits.
-SELECT '"\u0000"'::json; -- OK, legal escape
- json
-----------
- "\u0000"
-(1 row)
-
-SELECT '"\uaBcD"'::json; -- OK, uppercase and lower case both OK
- json
-----------
- "\uaBcD"
-(1 row)
-
+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
ERROR: invalid input syntax for type json
LINE 1: SELECT '01'::json;
^
-DETAIL: line 1: Token "01" is invalid.
+DETAIL: Token "01" is invalid.
+CONTEXT: JSON data, line 1: 01
SELECT '0.1'::json; -- OK
json
------
ERROR: invalid input syntax for type json
LINE 1: SELECT '1f2'::json;
^
-DETAIL: line 1: Token "1f2" is invalid.
+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 '[1,2,]'::json; -- ERROR, trailing comma
-ERROR: invalid input syntax for type json: "[1,2,]"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '[1,2,]'::json;
^
-DETAIL: line 1: Expected string, number, object, array, true, false, or null, but found "]".
+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: "[1,2"
+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: "[1,[2]"
+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: "{"abc"}"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc"}'::json;
^
-DETAIL: line 1: Expected ":", but found "}".
+DETAIL: Expected ":", but found "}".
+CONTEXT: JSON data, line 1: {"abc"}
SELECT '{"abc":1}'::json; -- OK
json
-----------
(1 row)
SELECT '{1:"abc"}'::json; -- ERROR, keys must be strings
-ERROR: invalid input syntax for type json: "{1:"abc"}"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '{1:"abc"}'::json;
^
-DETAIL: line 1: Expected string or "}", but found "1".
+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: "{"abc",1}"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc",1}'::json;
^
-DETAIL: line 1: Expected ":", but found ",".
+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: line 1: Token "=" is invalid.
+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: "{"abc"::1}"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc"::1}'::json;
^
-DETAIL: line 1: Expected string, number, object, array, true, false, or null, but found ":".
+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
---------------------------------------------------------
(1 row)
SELECT '{"abc":1:2}'::json; -- ERROR, colon in wrong spot
-ERROR: invalid input syntax for type json: "{"abc":1:2}"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc":1:2}'::json;
^
-DETAIL: line 1: Expected "," or "}", but found ":".
+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: "{"abc":1,3}"
+ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc":1,3}'::json;
^
-DETAIL: line 1: Expected string, but found "3".
+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
(1 row)
SELECT 'true false'::json; -- ERROR, too many values
-ERROR: invalid input syntax for type json: "true false"
+ERROR: invalid input syntax for type json
LINE 1: SELECT 'true false'::json;
^
-DETAIL: line 1: Expected end of input, but found "false".
+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: "true, false"
+ERROR: invalid input syntax for type json
LINE 1: SELECT 'true, false'::json;
^
-DETAIL: line 1: Expected end of input, but found ",".
+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: line 1: Token "truf" is invalid.
+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: line 1: Token "trues" is invalid.
+DETAIL: Token "trues" is invalid.
+CONTEXT: JSON data, line 1: trues
SELECT ''::json; -- ERROR, no value
-ERROR: invalid input syntax for type json: ""
+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: " "
+ERROR: invalid input syntax for type json
LINE 1: SELECT ' '::json;
^
DETAIL: The input string ended unexpectedly.
+CONTEXT: JSON data, line 1:
--constructors
-- array_to_json
SELECT array_to_json(array(select 1 as a));
(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
----------------------------------------------------
- [{"f1":1,"f2":2},{"f1":2,"f2":4},{"f1":3,"f2":6}]
+ 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
--------------------
- [{"f1":1,"f2":2},+
- {"f1":2,"f2":4},+
- {"f1":3,"f2":6}]
+ 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,
+ 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,
+ ROW(y.*,ARRAY[4,5,6])] AS z
+ FROM generate_series(1,2) x,
generate_series(4,5) y) q;
array_to_json
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
{"f1":1,"f2":"foo"}
(1 row)
-SELECT row_to_json(q)
-FROM (SELECT $$a$$ || x AS b,
- y AS c,
+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,
+ ROW(y.*,ARRAY[4,5,6])] AS z
+ FROM generate_series(1,2) x,
generate_series(4,5) y) q;
row_to_json
--------------------------------------------------------------------
{"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,
+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,
+ ROW(y.*,ARRAY[4,5,6])] AS z
+ FROM generate_series(1,2) x,
generate_series(4,5) y) q;
row_to_json
-----------------------------------------------------
CREATE TEMP TABLE rows AS
SELECT x, 'txt' || x as y
FROM generate_series(1,3) AS x;
-SELECT row_to_json(q,true)
+SELECT row_to_json(q,true)
FROM rows q;
row_to_json
--------------
{"f1":[5,6,7,8,9,10]}
(1 row)
+-- anyarray column
+select to_json(histogram_bounds) histogram_bounds
+from pg_stats
+where attname = 'tmplname' and tablename = 'pg_pltemplate';
+ histogram_bounds
+---------------------------------------------------------------------------------------
+ ["plperl","plperlu","plpgsql","plpython2u","plpython3u","plpythonu","pltcl","pltclu"]
+(1 row)
+
+-- 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: record type has not been registered
+SELECT json_populate_record(row(1,2), '{"f1": 0, "f2": 1}');
+ json_populate_record
+----------------------
+ (0,1)
+(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: record type has not been registered
+SELECT json_populate_recordset(row(1,2), '[{"f1": 0, "f2": 1}]');
+ json_populate_recordset
+-------------------------
+ (0,1)
+(1 row)
+
+-- 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"
+-- 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)
+
+-- 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)
+
+-- ts_vector 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)
+
+-- 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)
+
projects / postgresql / blobdiff