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apache / cloudberry / refs/heads/cbdb-postgres-merge / . / src / test / regress / expected / json.out
blob: 0ddefd3a288c070249b1162c5f54b1bb67b686eb [file] [log] [blame]
-- 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...
-- Check fast path for longer strings (at least 16 bytes long)
SELECT ('"'||repeat('.', 12)||'abc"')::json; -- OK
json
-------------------
"............abc"
(1 row)
SELECT ('"'||repeat('.', 12)||'abc\n"')::json; -- OK, legal escapes
json
---------------------
"............abc\n"
(1 row)
-- see json_encoding test for input with unicode escapes
-- Numbers.
SELECT '1'::json; -- OK
json
------
1
(1 row)
SELECT '0'::json; -- OK
json
------
0
(1 row)
SELECT '01'::json; -- ERROR, not valid according to JSON spec
ERROR: invalid input syntax for type json
LINE 1: SELECT '01'::json;
^
DETAIL: Token "01" is invalid.
CONTEXT: JSON data, line 1: 01
SELECT '0.1'::json; -- OK
json
------
0.1
(1 row)
SELECT '9223372036854775808'::json; -- OK, even though it's too large for int8
json
---------------------
9223372036854775808
(1 row)
SELECT '1e100'::json; -- OK
json
-------
1e100
(1 row)
SELECT '1.3e100'::json; -- OK
json
---------
1.3e100
(1 row)
SELECT '1f2'::json; -- ERROR
ERROR: invalid input syntax for type json
LINE 1: SELECT '1f2'::json;
^
DETAIL: Token "1f2" is invalid.
CONTEXT: JSON data, line 1: 1f2
SELECT '0.x1'::json; -- ERROR
ERROR: invalid input syntax for type json
LINE 1: SELECT '0.x1'::json;
^
DETAIL: Token "0.x1" is invalid.
CONTEXT: JSON data, line 1: 0.x1
SELECT '1.3ex100'::json; -- ERROR
ERROR: invalid input syntax for type json
LINE 1: SELECT '1.3ex100'::json;
^
DETAIL: Token "1.3ex100" is invalid.
CONTEXT: JSON data, line 1: 1.3ex100
-- Arrays.
SELECT '[]'::json; -- OK
json
------
[]
(1 row)
SELECT '[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]'::json; -- OK
json
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[[]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]
(1 row)
SELECT '[1,2]'::json; -- OK
json
-------
[1,2]
(1 row)
SELECT '[1,2,]'::json; -- ERROR, trailing comma
ERROR: invalid input syntax for type json
LINE 1: SELECT '[1,2,]'::json;
^
DETAIL: Expected JSON value, but found "]".
CONTEXT: JSON data, line 1: [1,2,]
SELECT '[1,2'::json; -- ERROR, no closing bracket
ERROR: invalid input syntax for type json
LINE 1: SELECT '[1,2'::json;
^
DETAIL: The input string ended unexpectedly.
CONTEXT: JSON data, line 1: [1,2
SELECT '[1,[2]'::json; -- ERROR, no closing bracket
ERROR: invalid input syntax for type json
LINE 1: SELECT '[1,[2]'::json;
^
DETAIL: The input string ended unexpectedly.
CONTEXT: JSON data, line 1: [1,[2]
-- Objects.
SELECT '{}'::json; -- OK
json
------
{}
(1 row)
SELECT '{"abc"}'::json; -- ERROR, no value
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc"}'::json;
^
DETAIL: Expected ":", but found "}".
CONTEXT: JSON data, line 1: {"abc"}
SELECT '{"abc":1}'::json; -- OK
json
-----------
{"abc":1}
(1 row)
SELECT '{1:"abc"}'::json; -- ERROR, keys must be strings
ERROR: invalid input syntax for type json
LINE 1: SELECT '{1:"abc"}'::json;
^
DETAIL: Expected string or "}", but found "1".
CONTEXT: JSON data, line 1: {1...
SELECT '{"abc",1}'::json; -- ERROR, wrong separator
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc",1}'::json;
^
DETAIL: Expected ":", but found ",".
CONTEXT: JSON data, line 1: {"abc",...
SELECT '{"abc"=1}'::json; -- ERROR, totally wrong separator
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc"=1}'::json;
^
DETAIL: Token "=" is invalid.
CONTEXT: JSON data, line 1: {"abc"=...
SELECT '{"abc"::1}'::json; -- ERROR, another wrong separator
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc"::1}'::json;
^
DETAIL: Expected JSON value, but found ":".
CONTEXT: JSON data, line 1: {"abc"::...
SELECT '{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}'::json; -- OK
json
---------------------------------------------------------
{"abc":1,"def":2,"ghi":[3,4],"hij":{"klm":5,"nop":[6]}}
(1 row)
SELECT '{"abc":1:2}'::json; -- ERROR, colon in wrong spot
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc":1:2}'::json;
^
DETAIL: Expected "," or "}", but found ":".
CONTEXT: JSON data, line 1: {"abc":1:...
SELECT '{"abc":1,3}'::json; -- ERROR, no value
ERROR: invalid input syntax for type json
LINE 1: SELECT '{"abc":1,3}'::json;
^
DETAIL: Expected string, but found "3".
CONTEXT: JSON data, line 1: {"abc":1,3...
-- Recursion.
SET max_stack_depth = '100kB';
SELECT repeat('[', 10000)::json;
ERROR: stack depth limit exceeded
HINT: Increase the configuration parameter "max_stack_depth" (currently 100kB), after ensuring the platform's stack depth limit is adequate.
SELECT repeat('{"a":', 10000)::json;
ERROR: stack depth limit exceeded
HINT: Increase the configuration parameter "max_stack_depth" (currently 100kB), after ensuring the platform's stack depth limit is adequate.
RESET max_stack_depth;
-- Miscellaneous stuff.
SELECT 'true'::json; -- OK
json
------
true
(1 row)
SELECT 'false'::json; -- OK
json
-------
false
(1 row)
SELECT 'null'::json; -- OK
json
------
null
(1 row)
SELECT ' true '::json; -- OK, even with extra whitespace
json
--------
true
(1 row)
SELECT 'true false'::json; -- ERROR, too many values
ERROR: invalid input syntax for type json
LINE 1: SELECT 'true false'::json;
^
DETAIL: Expected end of input, but found "false".
CONTEXT: JSON data, line 1: true false
SELECT 'true, false'::json; -- ERROR, too many values
ERROR: invalid input syntax for type json
LINE 1: SELECT 'true, false'::json;
^
DETAIL: Expected end of input, but found ",".
CONTEXT: JSON data, line 1: true,...
SELECT 'truf'::json; -- ERROR, not a keyword
ERROR: invalid input syntax for type json
LINE 1: SELECT 'truf'::json;
^
DETAIL: Token "truf" is invalid.
CONTEXT: JSON data, line 1: truf
SELECT 'trues'::json; -- ERROR, not a keyword
ERROR: invalid input syntax for type json
LINE 1: SELECT 'trues'::json;
^
DETAIL: Token "trues" is invalid.
CONTEXT: JSON data, line 1: trues
SELECT ''::json; -- ERROR, no value
ERROR: invalid input syntax for type json
LINE 1: SELECT ''::json;
^
DETAIL: The input string ended unexpectedly.
CONTEXT: JSON data, line 1:
SELECT ' '::json; -- ERROR, no value
ERROR: invalid input syntax for type json
LINE 1: SELECT ' '::json;
^
DETAIL: The input string ended unexpectedly.
CONTEXT: JSON data, line 1:
-- Multi-line JSON input to check ERROR reporting
SELECT '{
"one": 1,
"two":"two",
"three":
true}'::json; -- OK
json
------------------------------
{ +
"one": 1, +
"two":"two",+
"three": +
true}
(1 row)
SELECT '{
"one": 1,
"two":,"two", -- ERROR extraneous comma before field "two"
"three":
true}'::json;
ERROR: invalid input syntax for type json
LINE 1: SELECT '{
^
DETAIL: Expected JSON value, but found ",".
CONTEXT: JSON data, line 3: "two":,...
SELECT '{
"one": 1,
"two":"two",
"averyveryveryveryveryveryveryveryveryverylongfieldname":}'::json;
ERROR: invalid input syntax for type json
LINE 1: SELECT '{
^
DETAIL: Expected JSON value, but found "}".
CONTEXT: JSON data, line 4: ...yveryveryveryveryveryveryveryverylongfieldname":}
-- ERROR missing value for last field
-- test non-error-throwing input
select pg_input_is_valid('{"a":true}', 'json');
pg_input_is_valid
-------------------
t
(1 row)
select pg_input_is_valid('{"a":true', 'json');
pg_input_is_valid
-------------------
f
(1 row)
select * from pg_input_error_info('{"a":true', 'json');
message | detail | hint | sql_error_code
------------------------------------+--------------------------------------+------+----------------
invalid input syntax for type json | The input string ended unexpectedly. | | 22P02
(1 row)
--constructors
-- array_to_json
SELECT array_to_json(array(select 1 as a));
array_to_json
---------------
[1]
(1 row)
SELECT array_to_json(array_agg(q),false) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
array_to_json
---------------------------------------------
[{"b":1,"c":2},{"b":2,"c":4},{"b":3,"c":6}]
(1 row)
SELECT array_to_json(array_agg(q),true) from (select x as b, x * 2 as c from generate_series(1,3) x) q;
array_to_json
-----------------
[{"b":1,"c":2},+
{"b":2,"c":4},+
{"b":3,"c":6}]
(1 row)
SELECT array_to_json(array_agg(q),false)
FROM ( SELECT $$a$$ || x AS b, y AS c,
ARRAY[ROW(x.*,ARRAY[1,2,3]),
ROW(y.*,ARRAY[4,5,6])] AS z
FROM generate_series(1,2) x,
generate_series(4,5) y) q;
array_to_json
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
[{"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]},{"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]},{"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]},{"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}]
(1 row)
SELECT array_to_json(array_agg(x),false) from generate_series(5,10) x;
array_to_json
----------------
[5,6,7,8,9,10]
(1 row)
SELECT array_to_json('{{1,5},{99,100}}'::int[]);
array_to_json
------------------
[[1,5],[99,100]]
(1 row)
-- row_to_json
SELECT row_to_json(row(1,'foo'));
row_to_json
---------------------
{"f1":1,"f2":"foo"}
(1 row)
SELECT row_to_json(q)
FROM (SELECT $$a$$ || x AS b,
y AS c,
ARRAY[ROW(x.*,ARRAY[1,2,3]),
ROW(y.*,ARRAY[4,5,6])] AS z
FROM generate_series(1,2) x,
generate_series(4,5) y) q;
row_to_json
--------------------------------------------------------------------
{"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
{"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
{"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
{"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
(4 rows)
SELECT row_to_json(q,true)
FROM (SELECT $$a$$ || x AS b,
y AS c,
ARRAY[ROW(x.*,ARRAY[1,2,3]),
ROW(y.*,ARRAY[4,5,6])] AS z
FROM generate_series(1,2) x,
generate_series(4,5) y) q;
row_to_json
-----------------------------------------------------
{"b":"a1", +
"c":4, +
"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
{"b":"a1", +
"c":5, +
"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
{"b":"a2", +
"c":4, +
"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}
{"b":"a2", +
"c":5, +
"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}
(4 rows)
CREATE TEMP TABLE rows AS
SELECT x, 'txt' || x as y
FROM generate_series(1,3) AS x;
SELECT row_to_json(q,true)
FROM rows q;
row_to_json
--------------
{"x":1, +
"y":"txt1"}
{"x":2, +
"y":"txt2"}
{"x":3, +
"y":"txt3"}
(3 rows)
SELECT row_to_json(row((select array_agg(x) as d from generate_series(5,10) x)),false);
row_to_json
-----------------------
{"f1":[5,6,7,8,9,10]}
(1 row)
-- anyarray column
analyze rows;
select attname, to_json(histogram_bounds) histogram_bounds
from pg_stats
where tablename = 'rows' and
schemaname = pg_my_temp_schema()::regnamespace::text
order by 1;
attname | histogram_bounds
---------+------------------------
x | [1,2,3]
y | ["txt1","txt2","txt3"]
(2 rows)
-- to_json, timestamps
select to_json(timestamp '2014-05-28 12:22:35.614298');
to_json
------------------------------
"2014-05-28T12:22:35.614298"
(1 row)
BEGIN;
SET LOCAL TIME ZONE 10.5;
select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
to_json
------------------------------------
"2014-05-29T02:52:35.614298+10:30"
(1 row)
SET LOCAL TIME ZONE -8;
select to_json(timestamptz '2014-05-28 12:22:35.614298-04');
to_json
------------------------------------
"2014-05-28T08:22:35.614298-08:00"
(1 row)
COMMIT;
select to_json(date '2014-05-28');
to_json
--------------
"2014-05-28"
(1 row)
select to_json(date 'Infinity');
to_json
------------
"infinity"
(1 row)
select to_json(date '-Infinity');
to_json
-------------
"-infinity"
(1 row)
select to_json(timestamp 'Infinity');
to_json
------------
"infinity"
(1 row)
select to_json(timestamp '-Infinity');
to_json
-------------
"-infinity"
(1 row)
select to_json(timestamptz 'Infinity');
to_json
------------
"infinity"
(1 row)
select to_json(timestamptz '-Infinity');
to_json
-------------
"-infinity"
(1 row)
--json_agg
SELECT json_agg(q)
FROM ( SELECT $$a$$ || x AS b, y AS c,
ARRAY[ROW(x.*,ARRAY[1,2,3]),
ROW(y.*,ARRAY[4,5,6])] AS z
FROM generate_series(1,2) x,
generate_series(4,5) y) q;
json_agg
-----------------------------------------------------------------------
[{"b":"a1","c":4,"z":[{"f1":1,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}, +
{"b":"a1","c":5,"z":[{"f1":1,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}, +
{"b":"a2","c":4,"z":[{"f1":2,"f2":[1,2,3]},{"f1":4,"f2":[4,5,6]}]}, +
{"b":"a2","c":5,"z":[{"f1":2,"f2":[1,2,3]},{"f1":5,"f2":[4,5,6]}]}]
(1 row)
SELECT json_agg(q ORDER BY x, y)
FROM rows q;
json_agg
-----------------------
[{"x":1,"y":"txt1"}, +
{"x":2,"y":"txt2"}, +
{"x":3,"y":"txt3"}]
(1 row)
UPDATE rows SET x = NULL WHERE x = 1;
SELECT json_agg(q ORDER BY x NULLS FIRST, y)
FROM rows q;
json_agg
--------------------------
[{"x":null,"y":"txt1"}, +
{"x":2,"y":"txt2"}, +
{"x":3,"y":"txt3"}]
(1 row)
-- non-numeric output
SELECT row_to_json(q)
FROM (SELECT 'NaN'::float8 AS "float8field") q;
row_to_json
-----------------------
{"float8field":"NaN"}
(1 row)
SELECT row_to_json(q)
FROM (SELECT 'Infinity'::float8 AS "float8field") q;
row_to_json
----------------------------
{"float8field":"Infinity"}
(1 row)
SELECT row_to_json(q)
FROM (SELECT '-Infinity'::float8 AS "float8field") q;
row_to_json
-----------------------------
{"float8field":"-Infinity"}
(1 row)
-- json input
SELECT row_to_json(q)
FROM (SELECT '{"a":1,"b": [2,3,4,"d","e","f"],"c":{"p":1,"q":2}}'::json AS "jsonfield") q;
row_to_json
------------------------------------------------------------------
{"jsonfield":{"a":1,"b": [2,3,4,"d","e","f"],"c":{"p":1,"q":2}}}
(1 row)
-- json extraction functions
CREATE TEMP TABLE test_json (
json_type text,
test_json json
);
INSERT INTO test_json VALUES
('scalar','"a scalar"'),
('array','["zero", "one","two",null,"four","five", [1,2,3],{"f1":9}]'),
('object','{"field1":"val1","field2":"val2","field3":null, "field4": 4, "field5": [1,2,3], "field6": {"f1":9}}');
SELECT test_json -> 'x'
FROM test_json
WHERE json_type = 'scalar';
?column?
----------
(1 row)
SELECT test_json -> 'x'
FROM test_json
WHERE json_type = 'array';
?column?
----------
(1 row)
SELECT test_json -> 'x'
FROM test_json
WHERE json_type = 'object';
?column?
----------
(1 row)
SELECT test_json->'field2'
FROM test_json
WHERE json_type = 'object';
?column?
----------
"val2"
(1 row)
SELECT test_json->>'field2'
FROM test_json
WHERE json_type = 'object';
?column?
----------
val2
(1 row)
SELECT test_json -> 2
FROM test_json
WHERE json_type = 'scalar';
?column?
----------
(1 row)
SELECT test_json -> 2
FROM test_json
WHERE json_type = 'array';
?column?
----------
"two"
(1 row)
SELECT test_json -> -1
FROM test_json
WHERE json_type = 'array';
?column?
----------
{"f1":9}
(1 row)
SELECT test_json -> 2
FROM test_json
WHERE json_type = 'object';
?column?
----------
(1 row)
SELECT test_json->>2
FROM test_json
WHERE json_type = 'array';
?column?
----------
two
(1 row)
SELECT test_json ->> 6 FROM test_json WHERE json_type = 'array';
?column?
----------
[1,2,3]
(1 row)
SELECT test_json ->> 7 FROM test_json WHERE json_type = 'array';
?column?
----------
{"f1":9}
(1 row)
SELECT test_json ->> 'field4' FROM test_json WHERE json_type = 'object';
?column?
----------
4
(1 row)
SELECT test_json ->> 'field5' FROM test_json WHERE json_type = 'object';
?column?
----------
[1,2,3]
(1 row)
SELECT test_json ->> 'field6' FROM test_json WHERE json_type = 'object';
?column?
----------
{"f1":9}
(1 row)
SELECT json_object_keys(test_json)
FROM test_json
WHERE json_type = 'scalar';
ERROR: cannot call json_object_keys on a scalar
SELECT json_object_keys(test_json)
FROM test_json
WHERE json_type = 'array';
ERROR: cannot call json_object_keys on an array
SELECT json_object_keys(test_json)
FROM test_json
WHERE json_type = 'object';
json_object_keys
------------------
field1
field2
field3
field4
field5
field6
(6 rows)
-- test extending object_keys resultset - initial resultset size is 256
select count(*) from
(select json_object_keys(json_object(array_agg(g)))
from (select unnest(array['f'||n,n::text])as g
from generate_series(1,300) as n) x ) y;
count
-------
300
(1 row)
-- nulls
select (test_json->'field3') is null as expect_false
from test_json
where json_type = 'object';
expect_false
--------------
f
(1 row)
select (test_json->>'field3') is null as expect_true
from test_json
where json_type = 'object';
expect_true
-------------
t
(1 row)
select (test_json->3) is null as expect_false
from test_json
where json_type = 'array';
expect_false
--------------
f
(1 row)
select (test_json->>3) is null as expect_true
from test_json
where json_type = 'array';
expect_true
-------------
t
(1 row)
-- corner cases
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> null::text;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> null::int;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> 1;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> -1;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> 'z';
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json -> '';
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json -> 1;
?column?
-------------
{"b": "cc"}
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json -> 3;
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json -> 'z';
?column?
----------
(1 row)
select '{"a": "c", "b": null}'::json -> 'b';
?column?
----------
null
(1 row)
select '"foo"'::json -> 1;
?column?
----------
(1 row)
select '"foo"'::json -> 'z';
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> null::text;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> null::int;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> 1;
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> 'z';
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json ->> '';
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json ->> 1;
?column?
-------------
{"b": "cc"}
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json ->> 3;
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json ->> 'z';
?column?
----------
(1 row)
select '{"a": "c", "b": null}'::json ->> 'b';
?column?
----------
(1 row)
select '"foo"'::json ->> 1;
?column?
----------
(1 row)
select '"foo"'::json ->> 'z';
?column?
----------
(1 row)
-- array length
SELECT json_array_length('[1,2,3,{"f1":1,"f2":[5,6]},4]');
json_array_length
-------------------
5
(1 row)
SELECT json_array_length('[]');
json_array_length
-------------------
0
(1 row)
SELECT json_array_length('{"f1":1,"f2":[5,6]}');
ERROR: cannot get array length of a non-array
SELECT json_array_length('4');
ERROR: cannot get array length of a scalar
-- each
select json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null}');
json_each
-------------------
(f1,"[1,2,3]")
(f2,"{""f3"":1}")
(f4,null)
(3 rows)
select * from json_each('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
key | value
-----+-----------
f1 | [1,2,3]
f2 | {"f3":1}
f4 | null
f5 | 99
f6 | "stringy"
(5 rows)
select json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":"null"}');
json_each_text
-------------------
(f1,"[1,2,3]")
(f2,"{""f3"":1}")
(f4,)
(f5,null)
(4 rows)
select * from json_each_text('{"f1":[1,2,3],"f2":{"f3":1},"f4":null,"f5":99,"f6":"stringy"}') q;
key | value
-----+----------
f1 | [1,2,3]
f2 | {"f3":1}
f4 |
f5 | 99
f6 | stringy
(5 rows)
-- extract_path, extract_path_as_text
select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
json_extract_path
-------------------
"stringy"
(1 row)
select json_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
json_extract_path
-------------------
{"f3":1}
(1 row)
select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
json_extract_path
-------------------
"f3"
(1 row)
select json_extract_path('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
json_extract_path
-------------------
1
(1 row)
select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
json_extract_path_text
------------------------
stringy
(1 row)
select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
json_extract_path_text
------------------------
{"f3":1}
(1 row)
select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',0::text);
json_extract_path_text
------------------------
f3
(1 row)
select json_extract_path_text('{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}','f2',1::text);
json_extract_path_text
------------------------
1
(1 row)
-- extract_path nulls
select json_extract_path('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_false;
expect_false
--------------
f
(1 row)
select json_extract_path_text('{"f2":{"f3":1},"f4":{"f5":null,"f6":"stringy"}}','f4','f5') is null as expect_true;
expect_true
-------------
t
(1 row)
select json_extract_path('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_false;
expect_false
--------------
f
(1 row)
select json_extract_path_text('{"f2":{"f3":1},"f4":[0,1,2,null]}','f4','3') is null as expect_true;
expect_true
-------------
t
(1 row)
-- extract_path operators
select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f4','f6'];
?column?
-----------
"stringy"
(1 row)
select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2'];
?column?
----------
{"f3":1}
(1 row)
select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','0'];
?column?
----------
"f3"
(1 row)
select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>array['f2','1'];
?column?
----------
1
(1 row)
select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f4','f6'];
?column?
----------
stringy
(1 row)
select '{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2'];
?column?
----------
{"f3":1}
(1 row)
select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','0'];
?column?
----------
f3
(1 row)
select '{"f2":["f3",1],"f4":{"f5":99,"f6":"stringy"}}'::json#>>array['f2','1'];
?column?
----------
1
(1 row)
-- corner cases for same
select '{"a": {"b":{"c": "foo"}}}'::json #> '{}';
?column?
---------------------------
{"a": {"b":{"c": "foo"}}}
(1 row)
select '[1,2,3]'::json #> '{}';
?column?
----------
[1,2,3]
(1 row)
select '"foo"'::json #> '{}';
?column?
----------
"foo"
(1 row)
select '42'::json #> '{}';
?column?
----------
42
(1 row)
select 'null'::json #> '{}';
?column?
----------
null
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a'];
?column?
--------------------
{"b":{"c": "foo"}}
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a', null];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a', ''];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b'];
?column?
--------------
{"c": "foo"}
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b','c'];
?column?
----------
"foo"
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','b','c','d'];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #> array['a','z','c'];
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #> array['a','1','b'];
?column?
----------
"cc"
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #> array['a','z','b'];
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json #> array['1','b'];
?column?
----------
"cc"
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json #> array['z','b'];
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": null}]'::json #> array['1','b'];
?column?
----------
null
(1 row)
select '"foo"'::json #> array['z'];
?column?
----------
(1 row)
select '42'::json #> array['f2'];
?column?
----------
(1 row)
select '42'::json #> array['0'];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> '{}';
?column?
---------------------------
{"a": {"b":{"c": "foo"}}}
(1 row)
select '[1,2,3]'::json #>> '{}';
?column?
----------
[1,2,3]
(1 row)
select '"foo"'::json #>> '{}';
?column?
----------
foo
(1 row)
select '42'::json #>> '{}';
?column?
----------
42
(1 row)
select 'null'::json #>> '{}';
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a'];
?column?
--------------------
{"b":{"c": "foo"}}
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a', null];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a', ''];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b'];
?column?
--------------
{"c": "foo"}
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b','c'];
?column?
----------
foo
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','b','c','d'];
?column?
----------
(1 row)
select '{"a": {"b":{"c": "foo"}}}'::json #>> array['a','z','c'];
?column?
----------
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #>> array['a','1','b'];
?column?
----------
cc
(1 row)
select '{"a": [{"b": "c"}, {"b": "cc"}]}'::json #>> array['a','z','b'];
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json #>> array['1','b'];
?column?
----------
cc
(1 row)
select '[{"b": "c"}, {"b": "cc"}]'::json #>> array['z','b'];
?column?
----------
(1 row)
select '[{"b": "c"}, {"b": null}]'::json #>> array['1','b'];
?column?
----------
(1 row)
select '"foo"'::json #>> array['z'];
?column?
----------
(1 row)
select '42'::json #>> array['f2'];
?column?
----------
(1 row)
select '42'::json #>> array['0'];
?column?
----------
(1 row)
-- array_elements
select json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
json_array_elements
-----------------------
1
true
[1,[2,3]]
null
{"f1":1,"f2":[7,8,9]}
false
"stringy"
(7 rows)
select * from json_array_elements('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
value
-----------------------
1
true
[1,[2,3]]
null
{"f1":1,"f2":[7,8,9]}
false
"stringy"
(7 rows)
select json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]');
json_array_elements_text
--------------------------
1
true
[1,[2,3]]
{"f1":1,"f2":[7,8,9]}
false
stringy
(7 rows)
select * from json_array_elements_text('[1,true,[1,[2,3]],null,{"f1":1,"f2":[7,8,9]},false,"stringy"]') q;
value
-----------------------
1
true
[1,[2,3]]
{"f1":1,"f2":[7,8,9]}
false
stringy
(7 rows)
-- populate_record
create type jpop as (a text, b int, c timestamp);
CREATE DOMAIN js_int_not_null AS int NOT NULL;
CREATE DOMAIN js_int_array_1d AS int[] CHECK(array_length(VALUE, 1) = 3);
CREATE DOMAIN js_int_array_2d AS int[][] CHECK(array_length(VALUE, 2) = 3);
create type j_unordered_pair as (x int, y int);
create domain j_ordered_pair as j_unordered_pair check((value).x <= (value).y);
CREATE TYPE jsrec AS (
i int,
ia _int4,
ia1 int[],
ia2 int[][],
ia3 int[][][],
ia1d js_int_array_1d,
ia2d js_int_array_2d,
t text,
ta text[],
c char(10),
ca char(10)[],
ts timestamp,
js json,
jsb jsonb,
jsa json[],
rec jpop,
reca jpop[]
);
CREATE TYPE jsrec_i_not_null AS (
i js_int_not_null
);
select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
a | b | c
--------+---+---
blurfl | |
(1 row)
select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
a | b | c
--------+---+--------------------------
blurfl | 3 | Mon Dec 31 15:30:56 2012
(1 row)
select * from json_populate_record(null::jpop,'{"a":"blurfl","x":43.2}') q;
a | b | c
--------+---+---
blurfl | |
(1 row)
select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":"blurfl","x":43.2}') q;
a | b | c
--------+---+--------------------------
blurfl | 3 | Mon Dec 31 15:30:56 2012
(1 row)
select * from json_populate_record(null::jpop,'{"a":[100,200,false],"x":43.2}') q;
a | b | c
-----------------+---+---
[100,200,false] | |
(1 row)
select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"a":[100,200,false],"x":43.2}') q;
a | b | c
-----------------+---+--------------------------
[100,200,false] | 3 | Mon Dec 31 15:30:56 2012
(1 row)
select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{"c":[100,200,false],"x":43.2}') q;
ERROR: invalid input syntax for type timestamp: "[100,200,false]"
select * from json_populate_record(row('x',3,'2012-12-31 15:30:56')::jpop,'{}') q;
a | b | c
---+---+--------------------------
x | 3 | Mon Dec 31 15:30:56 2012
(1 row)
SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"x": 43.2}') q;
ERROR: domain js_int_not_null does not allow null values
SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"i": null}') q;
ERROR: domain js_int_not_null does not allow null values
SELECT i FROM json_populate_record(NULL::jsrec_i_not_null, '{"i": 12345}') q;
i
-------
12345
(1 row)
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": null}') q;
ia
----
(1 row)
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "ia".
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [1, "2", null, 4]}') q;
ia
--------------
{1,2,NULL,4}
(1 row)
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1, 2], [3, 4]]}') q;
ia
---------------
{{1,2},{3,4}}
(1 row)
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1], 2]}') q;
ERROR: expected JSON array
HINT: See the array element [1] of key "ia".
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": [[1], [2, 3]]}') q;
ERROR: malformed JSON array
DETAIL: Multidimensional arrays must have sub-arrays with matching dimensions.
SELECT ia FROM json_populate_record(NULL::jsrec, '{"ia": "{1,2,3}"}') q;
ia
---------
{1,2,3}
(1 row)
SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": null}') q;
ia1
-----
(1 row)
SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "ia1".
SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": [1, "2", null, 4]}') q;
ia1
--------------
{1,2,NULL,4}
(1 row)
SELECT ia1 FROM json_populate_record(NULL::jsrec, '{"ia1": [[1, 2, 3]]}') q;
ia1
-----------
{{1,2,3}}
(1 row)
SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": null}') q;
ia1d
------
(1 row)
SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "ia1d".
SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": [1, "2", null, 4]}') q;
ERROR: value for domain js_int_array_1d violates check constraint "js_int_array_1d_check"
SELECT ia1d FROM json_populate_record(NULL::jsrec, '{"ia1d": [1, "2", null]}') q;
ia1d
------------
{1,2,NULL}
(1 row)
SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [1, "2", null, 4]}') q;
ia2
--------------
{1,2,NULL,4}
(1 row)
SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], [null, 4]]}') q;
ia2
------------------
{{1,2},{NULL,4}}
(1 row)
SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[], []]}') q;
ia2
-----
{}
(1 row)
SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], [3]]}') q;
ERROR: malformed JSON array
DETAIL: Multidimensional arrays must have sub-arrays with matching dimensions.
SELECT ia2 FROM json_populate_record(NULL::jsrec, '{"ia2": [[1, 2], 3, 4]}') q;
ERROR: expected JSON array
HINT: See the array element [1] of key "ia2".
SELECT ia2d FROM json_populate_record(NULL::jsrec, '{"ia2d": [[1, "2"], [null, 4]]}') q;
ERROR: value for domain js_int_array_2d violates check constraint "js_int_array_2d_check"
SELECT ia2d FROM json_populate_record(NULL::jsrec, '{"ia2d": [[1, "2", 3], [null, 5, 6]]}') q;
ia2d
----------------------
{{1,2,3},{NULL,5,6}}
(1 row)
SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [1, "2", null, 4]}') q;
ia3
--------------
{1,2,NULL,4}
(1 row)
SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [[1, 2], [null, 4]]}') q;
ia3
------------------
{{1,2},{NULL,4}}
(1 row)
SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[], []], [[], []], [[], []] ]}') q;
ia3
-----
{}
(1 row)
SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2]], [[3, 4]] ]}') q;
ia3
-------------------
{{{1,2}},{{3,4}}}
(1 row)
SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2], [3, 4]], [[5, 6], [7, 8]] ]}') q;
ia3
-------------------------------
{{{1,2},{3,4}},{{5,6},{7,8}}}
(1 row)
SELECT ia3 FROM json_populate_record(NULL::jsrec, '{"ia3": [ [[1, 2], [3, 4]], [[5, 6], [7, 8], [9, 10]] ]}') q;
ERROR: malformed JSON array
DETAIL: Multidimensional arrays must have sub-arrays with matching dimensions.
SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": null}') q;
ta
----
(1 row)
SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "ta".
SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": [1, "2", null, 4]}') q;
ta
--------------
{1,2,NULL,4}
(1 row)
SELECT ta FROM json_populate_record(NULL::jsrec, '{"ta": [[1, 2, 3], {"k": "v"}]}') q;
ERROR: expected JSON array
HINT: See the array element [1] of key "ta".
SELECT c FROM json_populate_record(NULL::jsrec, '{"c": null}') q;
c
---
(1 row)
SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaa"}') q;
c
------------
aaa
(1 row)
SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaaaaaaaaa"}') q;
c
------------
aaaaaaaaaa
(1 row)
SELECT c FROM json_populate_record(NULL::jsrec, '{"c": "aaaaaaaaaaaaa"}') q;
ERROR: value too long for type character(10)
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": null}') q;
ca
----
(1 row)
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "ca".
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": [1, "2", null, 4]}') q;
ca
-----------------------------------------------
{"1 ","2 ",NULL,"4 "}
(1 row)
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": ["aaaaaaaaaaaaaaaa"]}') q;
ERROR: value too long for type character(10)
SELECT ca FROM json_populate_record(NULL::jsrec, '{"ca": [[1, 2, 3], {"k": "v"}]}') q;
ERROR: expected JSON array
HINT: See the array element [1] of key "ca".
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": null}') q;
js
----
(1 row)
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": true}') q;
js
------
true
(1 row)
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": 123.45}') q;
js
--------
123.45
(1 row)
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": "123.45"}') q;
js
----------
"123.45"
(1 row)
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": "abc"}') q;
js
-------
"abc"
(1 row)
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": [123, "123", null, {"key": "value"}]}') q;
js
--------------------------------------
[123, "123", null, {"key": "value"}]
(1 row)
SELECT js FROM json_populate_record(NULL::jsrec, '{"js": {"a": "bbb", "b": null, "c": 123.45}}') q;
js
--------------------------------------
{"a": "bbb", "b": null, "c": 123.45}
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": null}') q;
jsb
-----
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": true}') q;
jsb
------
true
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": 123.45}') q;
jsb
--------
123.45
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": "123.45"}') q;
jsb
----------
"123.45"
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": "abc"}') q;
jsb
-------
"abc"
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": [123, "123", null, {"key": "value"}]}') q;
jsb
--------------------------------------
[123, "123", null, {"key": "value"}]
(1 row)
SELECT jsb FROM json_populate_record(NULL::jsrec, '{"jsb": {"a": "bbb", "b": null, "c": 123.45}}') q;
jsb
--------------------------------------
{"a": "bbb", "b": null, "c": 123.45}
(1 row)
SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": null}') q;
jsa
-----
(1 row)
SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "jsa".
SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": [1, "2", null, 4]}') q;
jsa
--------------------
{1,"\"2\"",NULL,4}
(1 row)
SELECT jsa FROM json_populate_record(NULL::jsrec, '{"jsa": ["aaa", null, [1, 2, "3", {}], { "k" : "v" }]}') q;
jsa
----------------------------------------------------------
{"\"aaa\"",NULL,"[1, 2, \"3\", {}]","{ \"k\" : \"v\" }"}
(1 row)
SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": 123}') q;
ERROR: cannot call populate_composite on a scalar
SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": [1, 2]}') q;
ERROR: cannot call populate_composite on an array
SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2}}') q;
rec
-----------------------------------
(abc,,"Thu Jan 02 00:00:00 2003")
(1 row)
SELECT rec FROM json_populate_record(NULL::jsrec, '{"rec": "(abc,42,01.02.2003)"}') q;
rec
-------------------------------------
(abc,42,"Thu Jan 02 00:00:00 2003")
(1 row)
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": 123}') q;
ERROR: expected JSON array
HINT: See the value of key "reca".
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": [1, 2]}') q;
ERROR: cannot call populate_composite on a scalar
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": [{"a": "abc", "b": 456}, null, {"c": "01.02.2003", "x": 43.2}]}') q;
reca
--------------------------------------------------------
{"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
(1 row)
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": ["(abc,42,01.02.2003)"]}') q;
reca
-------------------------------------------
{"(abc,42,\"Thu Jan 02 00:00:00 2003\")"}
(1 row)
SELECT reca FROM json_populate_record(NULL::jsrec, '{"reca": "{\"(abc,42,01.02.2003)\"}"}') q;
reca
-------------------------------------------
{"(abc,42,\"Thu Jan 02 00:00:00 2003\")"}
(1 row)
SELECT rec FROM json_populate_record(
row(NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,
row('x',3,'2012-12-31 15:30:56')::jpop,NULL)::jsrec,
'{"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2}}'
) q;
rec
------------------------------------
(abc,3,"Thu Jan 02 00:00:00 2003")
(1 row)
-- anonymous record type
SELECT json_populate_record(null::record, '{"x": 0, "y": 1}');
ERROR: could not determine row type for result of json_populate_record
HINT: Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
SELECT json_populate_record(row(1,2), '{"f1": 0, "f2": 1}');
json_populate_record
----------------------
(0,1)
(1 row)
--start_ignore
-- GPDB_13_MERGE_FIXME: Need to full support stable evaluation in const evalation in planner.
--end_ignore
SELECT * FROM
json_populate_record(null::record, '{"x": 776}') AS (x int, y int);
ERROR: could not determine row type for result of json_populate_record
HINT: Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
-- composite domain
SELECT json_populate_record(null::j_ordered_pair, '{"x": 0, "y": 1}');
json_populate_record
----------------------
(0,1)
(1 row)
SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 0}');
json_populate_record
----------------------
(0,2)
(1 row)
SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 1, "y": 0}');
ERROR: value for domain j_ordered_pair violates check constraint "j_ordered_pair_check"
-- populate_recordset
select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
--------+---+--------------------------
blurfl | |
| 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
--------+----+--------------------------
blurfl | 99 |
def | 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
--------+---+--------------------------
blurfl | |
| 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
--------+----+--------------------------
blurfl | 99 |
def | 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
---------------+----+--------------------------
[100,200,300] | 99 |
{"z":true} | 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(row('def',99,null)::jpop,'[{"c":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
ERROR: invalid input syntax for type timestamp: "[100,200,300]"
create type jpop2 as (a int, b json, c int, d int);
select * from json_populate_recordset(null::jpop2, '[{"a":2,"c":3,"b":{"z":4},"d":6}]') q;
a | b | c | d
---+---------+---+---
2 | {"z":4} | 3 | 6
(1 row)
select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
--------+---+--------------------------
blurfl | |
| 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
--------+----+--------------------------
blurfl | 99 |
def | 3 | Fri Jan 20 10:42:53 2012
(2 rows)
select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q;
a | b | c
---------------+----+--------------------------
[100,200,300] | 99 |
{"z":true} | 3 | Fri Jan 20 10:42:53 2012
(2 rows)
-- anonymous record type
SELECT json_populate_recordset(null::record, '[{"x": 0, "y": 1}]');
ERROR: could not determine row type for result of json_populate_recordset
HINT: Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
SELECT json_populate_recordset(row(1,2), '[{"f1": 0, "f2": 1}]');
json_populate_recordset
-------------------------
(0,1)
(1 row)
SELECT i, json_populate_recordset(row(i,50), '[{"f1":"42"},{"f2":"43"}]')
FROM (VALUES (1),(2)) v(i);
i | json_populate_recordset
---+-------------------------
1 | (42,50)
1 | (1,43)
2 | (42,50)
2 | (2,43)
(4 rows)
SELECT * FROM
json_populate_recordset(null::record, '[{"x": 776}]') AS (x int, y int);
x | y
-----+---
776 |
(1 row)
-- empty array is a corner case
SELECT json_populate_recordset(null::record, '[]');
ERROR: could not determine row type for result of json_populate_recordset
HINT: Provide a non-null record argument, or call the function in the FROM clause using a column definition list.
SELECT json_populate_recordset(row(1,2), '[]');
json_populate_recordset
-------------------------
(0 rows)
SELECT * FROM json_populate_recordset(NULL::jpop,'[]') q;
a | b | c
---+---+---
(0 rows)
SELECT * FROM
json_populate_recordset(null::record, '[]') AS (x int, y int);
x | y
---+---
(0 rows)
-- composite domain
SELECT json_populate_recordset(null::j_ordered_pair, '[{"x": 0, "y": 1}]');
json_populate_recordset
-------------------------
(0,1)
(1 row)
SELECT json_populate_recordset(row(1,2)::j_ordered_pair, '[{"x": 0}, {"y": 3}]');
json_populate_recordset
-------------------------
(0,2)
(1,3)
(2 rows)
SELECT json_populate_recordset(row(1,2)::j_ordered_pair, '[{"x": 1, "y": 0}]');
ERROR: value for domain j_ordered_pair violates check constraint "j_ordered_pair_check"
-- negative cases where the wrong record type is supplied
select * from json_populate_recordset(row(0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
ERROR: function return row and query-specified return row do not match
DETAIL: Returned row contains 1 attribute, but query expects 2.
select * from json_populate_recordset(row(0::int,0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
ERROR: function return row and query-specified return row do not match
DETAIL: Returned type integer at ordinal position 1, but query expects text.
select * from json_populate_recordset(row(0::int,0::int,0::int),'[{"a":"1","b":"2"},{"a":"3"}]') q (a text, b text);
ERROR: function return row and query-specified return row do not match
DETAIL: Returned row contains 3 attributes, but query expects 2.
select * from json_populate_recordset(row(1000000000::int,50::int),'[{"b":"2"},{"a":"3"}]') q (a text, b text);
ERROR: function return row and query-specified return row do not match
DETAIL: Returned type integer at ordinal position 1, but query expects text.
-- test type info caching in json_populate_record()
CREATE TEMP TABLE jspoptest (js json);
INSERT INTO jspoptest
SELECT '{
"jsa": [1, "2", null, 4],
"rec": {"a": "abc", "c": "01.02.2003", "x": 43.2},
"reca": [{"a": "abc", "b": 456}, null, {"c": "01.02.2003", "x": 43.2}]
}'::json
FROM generate_series(1, 3);
SELECT (json_populate_record(NULL::jsrec, js)).* FROM jspoptest;
i | ia | ia1 | ia2 | ia3 | ia1d | ia2d | t | ta | c | ca | ts | js | jsb | jsa | rec | reca
---+----+-----+-----+-----+------+------+---+----+---+----+----+----+-----+--------------------+-----------------------------------+--------------------------------------------------------
| | | | | | | | | | | | | | {1,"\"2\"",NULL,4} | (abc,,"Thu Jan 02 00:00:00 2003") | {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
| | | | | | | | | | | | | | {1,"\"2\"",NULL,4} | (abc,,"Thu Jan 02 00:00:00 2003") | {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
| | | | | | | | | | | | | | {1,"\"2\"",NULL,4} | (abc,,"Thu Jan 02 00:00:00 2003") | {"(abc,456,)",NULL,"(,,\"Thu Jan 02 00:00:00 2003\")"}
(3 rows)
DROP TYPE jsrec;
DROP TYPE jsrec_i_not_null;
DROP DOMAIN js_int_not_null;
DROP DOMAIN js_int_array_1d;
DROP DOMAIN js_int_array_2d;
DROP DOMAIN j_ordered_pair;
DROP TYPE j_unordered_pair;
--json_typeof() function
select value, json_typeof(value)
from (values (json '123.4'),
(json '-1'),
(json '"foo"'),
(json 'true'),
(json 'false'),
(json 'null'),
(json '[1, 2, 3]'),
(json '[]'),
(json '{"x":"foo", "y":123}'),
(json '{}'),
(NULL::json))
as data(value);
value | json_typeof
----------------------+-------------
123.4 | number
-1 | number
"foo" | string
true | boolean
false | boolean
null | null
[1, 2, 3] | array
[] | array
{"x":"foo", "y":123} | object
{} | object
|
(11 rows)
-- json_build_array, json_build_object, json_object_agg
SELECT json_build_array('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
json_build_array
-----------------------------------------------------------------------
["a", 1, "b", 1.2, "c", true, "d", null, "e", {"x": 3, "y": [1,2,3]}]
(1 row)
SELECT json_build_array('a', NULL); -- ok
json_build_array
------------------
["a", null]
(1 row)
SELECT json_build_array(VARIADIC NULL::text[]); -- ok
json_build_array
------------------
(1 row)
SELECT json_build_array(VARIADIC '{}'::text[]); -- ok
json_build_array
------------------
[]
(1 row)
SELECT json_build_array(VARIADIC '{a,b,c}'::text[]); -- ok
json_build_array
------------------
["a", "b", "c"]
(1 row)
SELECT json_build_array(VARIADIC ARRAY['a', NULL]::text[]); -- ok
json_build_array
------------------
["a", null]
(1 row)
SELECT json_build_array(VARIADIC '{1,2,3,4}'::text[]); -- ok
json_build_array
----------------------
["1", "2", "3", "4"]
(1 row)
SELECT json_build_array(VARIADIC '{1,2,3,4}'::int[]); -- ok
json_build_array
------------------
[1, 2, 3, 4]
(1 row)
SELECT json_build_array(VARIADIC '{{1,4},{2,5},{3,6}}'::int[][]); -- ok
json_build_array
--------------------
[1, 4, 2, 5, 3, 6]
(1 row)
SELECT json_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
json_build_object
----------------------------------------------------------------------------
{"a" : 1, "b" : 1.2, "c" : true, "d" : null, "e" : {"x": 3, "y": [1,2,3]}}
(1 row)
SELECT json_build_object(
'a', json_build_object('b',false,'c',99),
'd', json_build_object('e',array[9,8,7]::int[],
'f', (select row_to_json(r) from ( select relkind, oid::regclass as name from pg_class where relname = 'pg_class') r)));
json_build_object
-------------------------------------------------------------------------------------------------
{"a" : {"b" : false, "c" : 99}, "d" : {"e" : [9,8,7], "f" : {"relkind":"r","name":"pg_class"}}}
(1 row)
SELECT json_build_object('{a,b,c}'::text[]); -- error
ERROR: argument list must have even number of elements
HINT: The arguments of json_build_object() must consist of alternating keys and values.
SELECT json_build_object('{a,b,c}'::text[], '{d,e,f}'::text[]); -- error, key cannot be array
ERROR: key value must be scalar, not array, composite, or json
SELECT json_build_object('a', 'b', 'c'); -- error
ERROR: argument list must have even number of elements
HINT: The arguments of json_build_object() must consist of alternating keys and values.
SELECT json_build_object(NULL, 'a'); -- error, key cannot be NULL
ERROR: null value not allowed for object key
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: null value not allowed for object key
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: null value not allowed for object key
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) order by serial_num))
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 order by type, name) 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: null value not allowed for object key
-- 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_object_agg_unique requires unique keys
select json_object_agg_unique(mod(i,100), i) from generate_series(0, 199) i;
ERROR: duplicate JSON object key value: "0"
-- json_to_record and json_to_recordset
select * from json_to_record('{"a":1,"b":"foo","c":"bar"}')
as x(a int, b text, d text);
a | b | d
---+-----+---
1 | foo |
(1 row)
select * from json_to_recordset('[{"a":1,"b":"foo","d":false},{"a":2,"b":"bar","c":true}]')
as x(a int, b text, c boolean);
a | b | c
---+-----+---
1 | foo |
2 | bar | t
(2 rows)
select * from json_to_recordset('[{"a":1,"b":{"d":"foo"},"c":true},{"a":2,"c":false,"b":{"d":"bar"}}]')
as x(a int, b json, c boolean);
a | b | c
---+-------------+---
1 | {"d":"foo"} | t
2 | {"d":"bar"} | f
(2 rows)
select *, c is null as c_is_null
from json_to_record('{"a":1, "b":{"c":16, "d":2}, "x":8, "ca": ["1 2", 3], "ia": [[1,2],[3,4]], "r": {"a": "aaa", "b": 123}}'::json)
as t(a int, b json, c text, x int, ca char(5)[], ia int[][], r jpop);
a | b | c | x | ca | ia | r | c_is_null
---+-----------------+---+---+-------------------+---------------+------------+-----------
1 | {"c":16, "d":2} | | 8 | {"1 2 ","3 "} | {{1,2},{3,4}} | (aaa,123,) | t
(1 row)
select *, c is null as c_is_null
from json_to_recordset('[{"a":1, "b":{"c":16, "d":2}, "x":8}]'::json)
as t(a int, b json, c text, x int);
a | b | c | x | c_is_null
---+-----------------+---+---+-----------
1 | {"c":16, "d":2} | | 8 | t
(1 row)
select * from json_to_record('{"ia": null}') as x(ia _int4);
ia
----
(1 row)
select * from json_to_record('{"ia": 123}') as x(ia _int4);
ERROR: expected JSON array
HINT: See the value of key "ia".
select * from json_to_record('{"ia": [1, "2", null, 4]}') as x(ia _int4);
ia
--------------
{1,2,NULL,4}
(1 row)
select * from json_to_record('{"ia": [[1, 2], [3, 4]]}') as x(ia _int4);
ia
---------------
{{1,2},{3,4}}
(1 row)
select * from json_to_record('{"ia": [[1], 2]}') as x(ia _int4);
ERROR: expected JSON array
HINT: See the array element [1] of key "ia".
select * from json_to_record('{"ia": [[1], [2, 3]]}') as x(ia _int4);
ERROR: malformed JSON array
DETAIL: Multidimensional arrays must have sub-arrays with matching dimensions.
select * from json_to_record('{"ia2": [1, 2, 3]}') as x(ia2 int[][]);
ia2
---------
{1,2,3}
(1 row)
select * from json_to_record('{"ia2": [[1, 2], [3, 4]]}') as x(ia2 int4[][]);
ia2
---------------
{{1,2},{3,4}}
(1 row)
select * from json_to_record('{"ia2": [[[1], [2], [3]]]}') as x(ia2 int4[][]);
ia2
-----------------
{{{1},{2},{3}}}
(1 row)
select * from json_to_record('{"out": {"key": 1}}') as x(out json);
out
------------
{"key": 1}
(1 row)
select * from json_to_record('{"out": [{"key": 1}]}') as x(out json);
out
--------------
[{"key": 1}]
(1 row)
select * from json_to_record('{"out": "{\"key\": 1}"}') as x(out json);
out
----------------
"{\"key\": 1}"
(1 row)
select * from json_to_record('{"out": {"key": 1}}') as x(out jsonb);
out
------------
{"key": 1}
(1 row)
select * from json_to_record('{"out": [{"key": 1}]}') as x(out jsonb);
out
--------------
[{"key": 1}]
(1 row)
select * from json_to_record('{"out": "{\"key\": 1}"}') as x(out jsonb);
out
----------------
"{\"key\": 1}"
(1 row)
-- json_strip_nulls
select json_strip_nulls(null);
json_strip_nulls
------------------
(1 row)
select json_strip_nulls('1');
json_strip_nulls
------------------
1
(1 row)
select json_strip_nulls('"a string"');
json_strip_nulls
------------------
"a string"
(1 row)
select json_strip_nulls('null');
json_strip_nulls
------------------
null
(1 row)
select json_strip_nulls('[1,2,null,3,4]');
json_strip_nulls
------------------
[1,2,null,3,4]
(1 row)
select json_strip_nulls('{"a":1,"b":null,"c":[2,null,3],"d":{"e":4,"f":null}}');
json_strip_nulls
------------------------------------
{"a":1,"c":[2,null,3],"d":{"e":4}}
(1 row)
select json_strip_nulls('[1,{"a":1,"b":null,"c":2},3]');
json_strip_nulls
---------------------
[1,{"a":1,"c":2},3]
(1 row)
-- an empty object is not null and should not be stripped
select json_strip_nulls('{"a": {"b": null, "c": null}, "d": {} }');
json_strip_nulls
------------------
{"a":{},"d":{}}
(1 row)
-- json to tsvector
select to_tsvector('{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
to_tsvector
---------------------------------------------------------------------------
'aaa':1 'bbb':2 'ccc':4 'ddd':3 'eee':6 'fff':7 'ggg':8 'hhh':10 'iii':11
(1 row)
-- json to tsvector with config
select to_tsvector('simple', '{"a": "aaa bbb ddd ccc", "b": ["eee fff ggg"], "c": {"d": "hhh iii"}}'::json);
to_tsvector
---------------------------------------------------------------------------
'aaa':1 'bbb':2 'ccc':4 'ddd':3 'eee':6 'fff':7 'ggg':8 'hhh':10 'iii':11
(1 row)
-- json to tsvector with stop words
select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": ["the eee fff ggg"], "c": {"d": "hhh. iii"}}'::json);
to_tsvector
----------------------------------------------------------------------------
'aaa':1 'bbb':3 'ccc':5 'ddd':4 'eee':8 'fff':9 'ggg':10 'hhh':12 'iii':13
(1 row)
-- json to tsvector with numeric values
select to_tsvector('english', '{"a": "aaa in bbb ddd ccc", "b": 123, "c": 456}'::json);
to_tsvector
---------------------------------
'aaa':1 'bbb':3 'ccc':5 'ddd':4
(1 row)
-- json_to_tsvector
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"all"');
json_to_tsvector
----------------------------------------------------------------------------------------
'123':8 '456':12 'aaa':2 'b':6 'bbb':4 'c':10 'd':14 'f':18 'fals':20 'g':22 'true':16
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"key"');
json_to_tsvector
--------------------------------
'b':2 'c':4 'd':6 'f':8 'g':10
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"string"');
json_to_tsvector
------------------
'aaa':1 'bbb':3
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"numeric"');
json_to_tsvector
------------------
'123':1 '456':3
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"boolean"');
json_to_tsvector
-------------------
'fals':3 'true':1
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["string", "numeric"]');
json_to_tsvector
---------------------------------
'123':5 '456':7 'aaa':1 'bbb':3
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"all"');
json_to_tsvector
----------------------------------------------------------------------------------------
'123':8 '456':12 'aaa':2 'b':6 'bbb':4 'c':10 'd':14 'f':18 'fals':20 'g':22 'true':16
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"key"');
json_to_tsvector
--------------------------------
'b':2 'c':4 'd':6 'f':8 'g':10
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"string"');
json_to_tsvector
------------------
'aaa':1 'bbb':3
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"numeric"');
json_to_tsvector
------------------
'123':1 '456':3
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '"boolean"');
json_to_tsvector
-------------------
'fals':3 'true':1
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["string", "numeric"]');
json_to_tsvector
---------------------------------
'123':5 '456':7 'aaa':1 'bbb':3
(1 row)
-- to_tsvector corner cases
select to_tsvector('""'::json);
to_tsvector
-------------
(1 row)
select to_tsvector('{}'::json);
to_tsvector
-------------
(1 row)
select to_tsvector('[]'::json);
to_tsvector
-------------
(1 row)
select to_tsvector('null'::json);
to_tsvector
-------------
(1 row)
-- json_to_tsvector corner cases
select json_to_tsvector('""'::json, '"all"');
json_to_tsvector
------------------
(1 row)
select json_to_tsvector('{}'::json, '"all"');
json_to_tsvector
------------------
(1 row)
select json_to_tsvector('[]'::json, '"all"');
json_to_tsvector
------------------
(1 row)
select json_to_tsvector('null'::json, '"all"');
json_to_tsvector
------------------
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '""');
ERROR: wrong flag in flag array: ""
HINT: Possible values are: "string", "numeric", "boolean", "key", and "all".
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '{}');
ERROR: wrong flag type, only arrays and scalars are allowed
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '[]');
json_to_tsvector
------------------
(1 row)
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, 'null');
ERROR: flag array element is not a string
HINT: Possible values are: "string", "numeric", "boolean", "key", and "all".
select json_to_tsvector('english', '{"a": "aaa in bbb", "b": 123, "c": 456, "d": true, "f": false, "g": null}'::json, '["all", null]');
ERROR: flag array element is not a string
HINT: Possible values are: "string", "numeric", "boolean", "key", and "all".
-- ts_headline for json
select ts_headline('{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
ts_headline
---------------------------------------------------------------------------------------------------------
{"a":"aaa <b>bbb</b>","b":{"c":"ccc <b>ddd</b> fff","c1":"ccc1 ddd1"},"d":["ggg <b>hhh</b>","iii jjj"]}
(1 row)
select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'));
ts_headline
----------------------------------------------------------------------------------------
{"a":"aaa <b>bbb</b>","b":{"c":"ccc <b>ddd</b> fff"},"d":["ggg <b>hhh</b>","iii jjj"]}
(1 row)
select ts_headline('{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'), 'StartSel = <, StopSel = >');
ts_headline
------------------------------------------------------------------------------------------
{"a":"aaa <bbb>","b":{"c":"ccc <ddd> fff","c1":"ccc1 ddd1"},"d":["ggg <hhh>","iii jjj"]}
(1 row)
select ts_headline('english', '{"a": "aaa bbb", "b": {"c": "ccc ddd fff", "c1": "ccc1 ddd1"}, "d": ["ggg hhh", "iii jjj"]}'::json, tsquery('bbb & ddd & hhh'), 'StartSel = <, StopSel = >');
ts_headline
------------------------------------------------------------------------------------------
{"a":"aaa <bbb>","b":{"c":"ccc <ddd> fff","c1":"ccc1 ddd1"},"d":["ggg <hhh>","iii jjj"]}
(1 row)
-- corner cases for ts_headline with json
select ts_headline('null'::json, tsquery('aaa & bbb'));
ts_headline
-------------
null
(1 row)
select ts_headline('{}'::json, tsquery('aaa & bbb'));
ts_headline
-------------
{}
(1 row)
select ts_headline('[]'::json, tsquery('aaa & bbb'));
ts_headline
-------------
[]
(1 row)
-- checking proisstrict settings
select '[{"a":1}]'::json->0->'b';
?column?
----------
(1 row)
select '[{"a":1}]'::json->1;
?column?
----------
(1 row)
select '[{"a":1}]'::json->1->'a';
?column?
----------
(1 row)