+++ /dev/null
--- Strings.
-SELECT '""'::json; -- OK.
- json
-------
- ""
-(1 row)
-
-SELECT $$''$$::json; -- ERROR, single quotes are not allowed
-ERROR: invalid input syntax for type json
-LINE 1: SELECT $$''$$::json;
- ^
-DETAIL: Token "'" is invalid.
-CONTEXT: JSON data, line 1: '...
-SELECT '"abc"'::json; -- OK
- json
--------
- "abc"
-(1 row)
-
-SELECT '"abc'::json; -- ERROR, quotes not closed
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"abc'::json;
- ^
-DETAIL: Token ""abc" is invalid.
-CONTEXT: JSON data, line 1: "abc
-SELECT '"abc
-def"'::json; -- ERROR, unescaped newline in string constant
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"abc
- ^
-DETAIL: Character with value 0x0a must be escaped.
-CONTEXT: JSON data, line 1: "abc
-SELECT '"\n\"\\"'::json; -- OK, legal escapes
- json
-----------
- "\n\"\\"
-(1 row)
-
-SELECT '"\v"'::json; -- ERROR, not a valid JSON escape
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\v"'::json;
- ^
-DETAIL: Escape sequence "\v" is invalid.
-CONTEXT: JSON data, line 1: "\v...
-SELECT '"\u"'::json; -- ERROR, incomplete escape
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\u"'::json;
- ^
-DETAIL: "\u" must be followed by four hexadecimal digits.
-CONTEXT: JSON data, line 1: "\u"
-SELECT '"\u00"'::json; -- ERROR, incomplete escape
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\u00"'::json;
- ^
-DETAIL: "\u" must be followed by four hexadecimal digits.
-CONTEXT: JSON data, line 1: "\u00"
-SELECT '"\u000g"'::json; -- ERROR, g is not a hex digit
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '"\u000g"'::json;
- ^
-DETAIL: "\u" must be followed by four hexadecimal digits.
-CONTEXT: JSON data, line 1: "\u000g...
-SELECT '"\u0000"'::json; -- OK, legal escape
- json
-----------
- "\u0000"
-(1 row)
-
-SELECT '"\uaBcD"'::json; -- OK, uppercase and lower case both OK
- json
-----------
- "\uaBcD"
-(1 row)
-
--- Numbers.
-SELECT '1'::json; -- OK
- json
-------
- 1
-(1 row)
-
-SELECT '0'::json; -- OK
- json
-------
- 0
-(1 row)
-
-SELECT '01'::json; -- ERROR, not valid according to JSON spec
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '01'::json;
- ^
-DETAIL: Token "01" is invalid.
-CONTEXT: JSON data, line 1: 01
-SELECT '0.1'::json; -- OK
- json
-------
- 0.1
-(1 row)
-
-SELECT '9223372036854775808'::json; -- OK, even though it's too large for int8
- json
----------------------
- 9223372036854775808
-(1 row)
-
-SELECT '1e100'::json; -- OK
- json
--------
- 1e100
-(1 row)
-
-SELECT '1.3e100'::json; -- OK
- json
----------
- 1.3e100
-(1 row)
-
-SELECT '1f2'::json; -- ERROR
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '1f2'::json;
- ^
-DETAIL: Token "1f2" is invalid.
-CONTEXT: JSON data, line 1: 1f2
-SELECT '0.x1'::json; -- ERROR
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '0.x1'::json;
- ^
-DETAIL: Token "0.x1" is invalid.
-CONTEXT: JSON data, line 1: 0.x1
-SELECT '1.3ex100'::json; -- ERROR
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '1.3ex100'::json;
- ^
-DETAIL: Token "1.3ex100" is invalid.
-CONTEXT: JSON data, line 1: 1.3ex100
--- Arrays.
-SELECT '[]'::json; -- OK
- json
-------
- []
-(1 row)
-
-SELECT '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'::json; -- OK
- json
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- [[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]
-(1 row)
-
-SELECT '[1,2]'::json; -- OK
- json
--------
- [1,2]
-(1 row)
-
-SELECT '[1,2,]'::json; -- ERROR, trailing comma
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '[1,2,]'::json;
- ^
-DETAIL: Expected JSON value, but found "]".
-CONTEXT: JSON data, line 1: [1,2,]
-SELECT '[1,2'::json; -- ERROR, no closing bracket
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '[1,2'::json;
- ^
-DETAIL: The input string ended unexpectedly.
-CONTEXT: JSON data, line 1: [1,2
-SELECT '[1,[2]'::json; -- ERROR, no closing bracket
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '[1,[2]'::json;
- ^
-DETAIL: The input string ended unexpectedly.
-CONTEXT: JSON data, line 1: [1,[2]
--- Objects.
-SELECT '{}'::json; -- OK
- json
-------
- {}
-(1 row)
-
-SELECT '{"abc"}'::json; -- ERROR, no value
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{"abc"}'::json;
- ^
-DETAIL: Expected ":", but found "}".
-CONTEXT: JSON data, line 1: {"abc"}
-SELECT '{"abc":1}'::json; -- OK
- json
------------
- {"abc":1}
-(1 row)
-
-SELECT '{1:"abc"}'::json; -- ERROR, keys must be strings
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{1:"abc"}'::json;
- ^
-DETAIL: Expected string or "}", but found "1".
-CONTEXT: JSON data, line 1: {1...
-SELECT '{"abc",1}'::json; -- ERROR, wrong separator
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{"abc",1}'::json;
- ^
-DETAIL: Expected ":", but found ",".
-CONTEXT: JSON data, line 1: {"abc",...
-SELECT '{"abc"=1}'::json; -- ERROR, totally wrong separator
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{"abc"=1}'::json;
- ^
-DETAIL: Token "=" is invalid.
-CONTEXT: JSON data, line 1: {"abc"=...
-SELECT '{"abc"::1}'::json; -- ERROR, another wrong separator
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{"abc"::1}'::json;
- ^
-DETAIL: Expected JSON value, but found ":".
-CONTEXT: JSON data, line 1: {"abc"::...
-SELECT '{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}'::json; -- OK
- json
----------------------------------------------------------
- {"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}
-(1 row)
-
-SELECT '{"abc":1:2}'::json; -- ERROR, colon in wrong spot
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{"abc":1:2}'::json;
- ^
-DETAIL: Expected "," or "}", but found ":".
-CONTEXT: JSON data, line 1: {"abc":1:...
-SELECT '{"abc":1,3}'::json; -- ERROR, no value
-ERROR: invalid input syntax for type json
-LINE 1: SELECT '{"abc":1,3}'::json;
- ^
-DETAIL: Expected string, but found "3".
-CONTEXT: JSON data, line 1: {"abc":1,3...
--- Recursion.
-SET max_stack_depth = '100kB';
-SELECT repeat('[', 10000)::json;
-ERROR: stack depth limit exceeded
-HINT: Increase the configuration parameter "max_stack_depth" (currently 100kB), after ensuring the platform's stack depth limit is adequate.
-SELECT repeat('{"a":', 10000)::json;
-ERROR: stack depth limit exceeded
-HINT: Increase the configuration parameter "max_stack_depth" (currently 100kB), after ensuring the platform's stack depth limit is adequate.
-RESET max_stack_depth;
--- Miscellaneous stuff.
-SELECT 'true'::json; -- OK
- json
-------
- true
-(1 row)
-
-SELECT 'false'::json; -- OK
- json
--------
- false
-(1 row)
-
-SELECT 'null'::json; -- OK
- json
-------
- null
-(1 row)
-
-SELECT ' true '::json; -- OK, even with extra whitespace
- json
---------
- true
-(1 row)
-
-SELECT 'true false'::json; -- ERROR, too many values
-ERROR: invalid input syntax for type json
-LINE 1: SELECT 'true false'::json;
- ^
-DETAIL: Expected end of input, but found "false".
-CONTEXT: JSON data, line 1: true false
-SELECT 'true, false'::json; -- ERROR, too many values
-ERROR: invalid input syntax for type json
-LINE 1: SELECT 'true, false'::json;
- ^
-DETAIL: Expected end of input, but found ",".
-CONTEXT: JSON data, line 1: true,...
-SELECT 'truf'::json; -- ERROR, not a keyword
-ERROR: invalid input syntax for type json
-LINE 1: SELECT 'truf'::json;
- ^
-DETAIL: Token "truf" is invalid.
-CONTEXT: JSON data, line 1: truf
-SELECT 'trues'::json; -- ERROR, not a keyword
-ERROR: invalid input syntax for type json
-LINE 1: SELECT 'trues'::json;
- ^
-DETAIL: Token "trues" is invalid.
-CONTEXT: JSON data, line 1: trues
-SELECT ''::json; -- ERROR, no value
-ERROR: invalid input syntax for type json
-LINE 1: SELECT ''::json;
- ^
-DETAIL: The input string ended unexpectedly.
-CONTEXT: JSON data, line 1:
-SELECT ' '::json; -- ERROR, no value
-ERROR: invalid input syntax for type json
-LINE 1: SELECT ' '::json;
- ^
-DETAIL: The input string ended unexpectedly.
-CONTEXT: JSON data, line 1:
---constructors
--- array_to_json
-SELECT array_to_json(array(select 1 as a));
- array_to_json
----------------
- [1]
-(1 row)
-
-SELECT array_to_json(array_agg(q),false) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
- array_to_json
----------------------------------------------
- [{"b":1,"c":2},{"b":2,"c":4},{"b":3,"c":6}]
-(1 row)
-
-SELECT array_to_json(array_agg(q),true) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
- array_to_json
------------------
- [{"b":1,"c":2},+
- {"b":2,"c":4},+
- {"b":3,"c":6}]
-(1 row)
-
-SELECT array_to_json(array_agg(q),false)
- FROM ( SELECT $$a$$ || x AS b, y AS c,
- ARRAY[ROW(x.*,ARRAY[1,2,3]),
- ROW(y.*,ARRAY[4,5,6])] AS z
- FROM generate_series(1,2) x,
- generate_series(4,5) y) q;
- array_to_json
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
- [{"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]},{"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]},{"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]},{"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}]
-(1 row)
-
-SELECT array_to_json(array_agg(x),false) from generate_series(5,10) x;
- array_to_json
-----------------
- [5,6,7,8,9,10]
-(1 row)
-
-SELECT array_to_json('{{1,5},{99,100}}'::int[]);
- array_to_json
-------------------
- [[1,5],[99,100]]
-(1 row)
-
--- row_to_json
-SELECT row_to_json(row(1,'foo'));
- row_to_json
----------------------
- {"f1":1,"f2":"foo"}
-(1 row)
-
-SELECT row_to_json(q)
-FROM (SELECT $$a$$ || x AS b,
- y AS c,
- ARRAY[ROW(x.*,ARRAY[1,2,3]),
- ROW(y.*,ARRAY[4,5,6])] AS z
- FROM generate_series(1,2) x,
- generate_series(4,5) y) q;
- row_to_json
---------------------------------------------------------------------
- {"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
- {"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
- {"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
- {"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
-(4 rows)
-
-SELECT row_to_json(q,true)
-FROM (SELECT $$a$$ || x AS b,
- y AS c,
- ARRAY[ROW(x.*,ARRAY[1,2,3]),
- ROW(y.*,ARRAY[4,5,6])] AS z
- FROM generate_series(1,2) x,
- generate_series(4,5) y) q;
- row_to_json
------------------------------------------------------
- {"b":"a1", +
- "c":4, +
- "z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
- {"b":"a1", +
- "c":5, +
- "z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
- {"b":"a2", +
- "c":4, +
- "z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
- {"b":"a2", +
- "c":5, +
- "z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
-(4 rows)
-
-CREATE TEMP TABLE rows AS
-SELECT x, 'txt' || x as y
-FROM generate_series(1,3) AS x;
-SELECT row_to_json(q,true)
-FROM rows q;
- row_to_json
---------------
- {"x":1, +
- "y":"txt1"}
- {"x":2, +
- "y":"txt2"}
- {"x":3, +
- "y":"txt3"}
-(3 rows)
-
-SELECT row_to_json(row((select array_agg(x) as d from generate_series(5,10) x)),false);
- row_to_json
------------------------
- {"f1":[5,6,7,8,9,10]}
-(1 row)
-
---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)
- FROM rows q;
- json_agg
------------------------
- [{"x":1,"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"]'),
-('object','{"field1":"val1","field2":"val2","field3":null}');
-SELECT test_json -> 'x'
-FROM test_json
-WHERE json_type = 'scalar';
-ERROR: cannot extract element from a scalar
-SELECT test_json -> 'x'
-FROM test_json
-WHERE json_type = 'array';
-ERROR: cannot extract field from a non-object
-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';
-ERROR: cannot extract element from a scalar
-SELECT test_json -> 2
-FROM test_json
-WHERE json_type = 'array';
- ?column?
-----------
- "two"
-(1 row)
-
-SELECT test_json -> 2
-FROM test_json
-WHERE json_type = 'object';
-ERROR: cannot extract array element from a non-array
-SELECT test_json->>2
-FROM test_json
-WHERE json_type = 'array';
- ?column?
-----------
- two
-(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
-(3 rows)
-
--- 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)
-
--- 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)
-
--- same using array literals
-select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f4,f6}';
- ?column?
------------
- "stringy"
-(1 row)
-
-select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f2}';
- ?column?
-----------
- {"f3":1}
-(1 row)
-
-select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f2,0}';
- ?column?
-----------
- "f3"
-(1 row)
-
-select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>'{f2,1}';
- ?column?
-----------
- 1
-(1 row)
-
-select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f4,f6}';
- ?column?
-----------
- stringy
-(1 row)
-
-select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f2}';
- ?column?
-----------
- {"f3":1}
-(1 row)
-
-select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f2,0}';
- ?column?
-----------
- f3
-(1 row)
-
-select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>'{f2,1}';
- ?column?
-----------
- 1
-(1 row)
-
--- array_elements
-select json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false]');
- json_array_elements
------------------------
- 1
- true
- [1,[2,3]]
- null
- {"f1":1,"f2":[7,8,9]}
- false
-(6 rows)
-
-select * from json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false]') q;
- value
------------------------
- 1
- true
- [1,[2,3]]
- null
- {"f1":1,"f2":[7,8,9]}
- false
-(6 rows)
-
--- populate_record
-create type jpop as (a text, b int, c timestamp);
-select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
- 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}', true) 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}', true) 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}', true) 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}', true) 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}', true) q;
-ERROR: invalid input syntax for type timestamp: "[100,200,false]"
--- populate_recordset
-select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]',false) 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"}]',false) 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"}]',true) 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"}]',true) 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"}]',true) 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"}]',true) 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}]',true) q;
- a | b | c | d
----+---------+---+---
- 2 | {"z":4} | 3 | 6
-(1 row)
-
--- using the default use_json_as_text argument
-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;
-ERROR: cannot call json_populate_recordset on a nested object
-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: cannot call json_populate_recordset on a nested object
--- handling of unicode surrogate pairs
-select json '{ "a": "\ud83d\ude04\ud83d\udc36" }' -> 'a' as correct_in_utf8;
-ERROR: invalid input syntax for type json
-DETAIL: Unicode escape values cannot be used for code point values above 007F when the server encoding is not UTF8.
-CONTEXT: JSON data, line 1: { "a":...
-select json '{ "a": "\ud83d\ud83d" }' -> 'a'; -- 2 high surrogates in a row
-ERROR: invalid input syntax for type json
-DETAIL: Unicode high surrogate must not follow a high surrogate.
-CONTEXT: JSON data, line 1: { "a":...
-select json '{ "a": "\ude04\ud83d" }' -> 'a'; -- surrogates in wrong order
-ERROR: invalid input syntax for type json
-DETAIL: Unicode low surrogate must follow a high surrogate.
-CONTEXT: JSON data, line 1: { "a":...
-select json '{ "a": "\ud83dX" }' -> 'a'; -- orphan high surrogate
-ERROR: invalid input syntax for type json
-DETAIL: Unicode low surrogate must follow a high surrogate.
-CONTEXT: JSON data, line 1: { "a":...
-select json '{ "a": "\ude04X" }' -> 'a'; -- orphan low surrogate
-ERROR: invalid input syntax for type json
-DETAIL: Unicode low surrogate must follow a high surrogate.
-CONTEXT: JSON data, line 1: { "a":...
---handling of simple unicode escapes
-select json '{ "a": "the Copyright \u00a9 sign" }' ->> 'a' as correct_in_utf8;
-ERROR: invalid input syntax for type json
-DETAIL: Unicode escape values cannot be used for code point values above 007F when the server encoding is not UTF8.
-CONTEXT: JSON data, line 1: { "a":...
-select json '{ "a": "dollar \u0024 character" }' ->> 'a' as correct_everywhere;
- correct_everywhere
---------------------
- dollar $ character
-(1 row)
-
-select json '{ "a": "null \u0000 escape" }' ->> 'a' as not_unescaped;
- not_unescaped
---------------------
- null \u0000 escape
-(1 row)
-
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