diff options
Diffstat (limited to 'src/test/regress/expected/json_1.out')
| -rw-r--r-- | src/test/regress/expected/json_1.out | 1726 |
1 files changed, 0 insertions, 1726 deletions
diff --git a/src/test/regress/expected/json_1.out b/src/test/regress/expected/json_1.out deleted file mode 100644 index a6e092cb8e..0000000000 --- a/src/test/regress/expected/json_1.out +++ /dev/null @@ -1,1726 +0,0 @@ --- 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) - --- 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(timestamp '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); -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]" --- 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) - --- handling of unicode surrogate pairs -select json '{ "a": "\ud83d\ude04\ud83d\udc36" }' -> 'a' as correct_in_utf8; -ERROR: unsupported Unicode escape sequence -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" }' as correct_in_utf8; - correct_in_utf8 ---------------------------------------- - { "a": "the Copyright \u00a9 sign" } -(1 row) - -select json '{ "a": "dollar \u0024 character" }' as correct_everywhere; - correct_everywhere -------------------------------------- - { "a": "dollar \u0024 character" } -(1 row) - -select json '{ "a": "dollar \\u0024 character" }' as not_an_escape; - not_an_escape --------------------------------------- - { "a": "dollar \\u0024 character" } -(1 row) - -select json '{ "a": "null \u0000 escape" }' as not_unescaped; - not_unescaped --------------------------------- - { "a": "null \u0000 escape" } -(1 row) - -select json '{ "a": "null \\u0000 escape" }' as not_an_escape; - not_an_escape ---------------------------------- - { "a": "null \\u0000 escape" } -(1 row) - -select json '{ "a": "the Copyright \u00a9 sign" }' ->> 'a' as correct_in_utf8; -ERROR: unsupported Unicode escape sequence -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": "dollar \\u0024 character" }' ->> 'a' as not_an_escape; - not_an_escape -------------------------- - dollar \u0024 character -(1 row) - -select json '{ "a": "null \u0000 escape" }' ->> 'a' as fails; -ERROR: unsupported Unicode escape sequence -DETAIL: \u0000 cannot be converted to text. -CONTEXT: JSON data, line 1: { "a":... -select json '{ "a": "null \\u0000 escape" }' ->> 'a' as not_an_escape; - not_an_escape --------------------- - null \u0000 escape -(1 row) - ---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_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) - --- empty objects/arrays -SELECT json_build_array(); - json_build_array ------------------- - [] -(1 row) - -SELECT json_build_object(); - json_build_object -------------------- - {} -(1 row) - --- make sure keys are quoted -SELECT json_build_object(1,2); - json_build_object -------------------- - {"1" : 2} -(1 row) - --- keys must be scalar and not null -SELECT json_build_object(null,2); -ERROR: argument 1 cannot be null -HINT: Object keys should be text. -SELECT json_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r; -ERROR: key value must be scalar, not array, composite, or json -SELECT json_build_object(json '{"a":1,"b":2}', 3); -ERROR: key value must be scalar, not array, composite, or json -SELECT json_build_object('{1,2,3}'::int[], 3); -ERROR: key value must be scalar, not array, composite, or json -CREATE TEMP TABLE foo (serial_num int, name text, type text); -INSERT INTO foo VALUES (847001,'t15','GE1043'); -INSERT INTO foo VALUES (847002,'t16','GE1043'); -INSERT INTO foo VALUES (847003,'sub-alpha','GESS90'); -SELECT json_build_object('turbines',json_object_agg(serial_num,json_build_object('name',name,'type',type))) -FROM foo; - json_build_object -------------------------------------------------------------------------------------------------------------------------------------------------------------------------- - {"turbines" : { "847001" : {"name" : "t15", "type" : "GE1043"}, "847002" : {"name" : "t16", "type" : "GE1043"}, "847003" : {"name" : "sub-alpha", "type" : "GESS90"} }} -(1 row) - -SELECT json_object_agg(name, type) FROM foo; - json_object_agg ----------------------------------------------------------------- - { "t15" : "GE1043", "t16" : "GE1043", "sub-alpha" : "GESS90" } -(1 row) - -INSERT INTO foo VALUES (999999, NULL, 'bar'); -SELECT json_object_agg(name, type) FROM foo; -ERROR: field name must not be null --- json_object --- one dimension -SELECT json_object('{a,1,b,2,3,NULL,"d e f","a b c"}'); - json_object -------------------------------------------------------- - {"a" : "1", "b" : "2", "3" : null, "d e f" : "a b c"} -(1 row) - --- same but with two dimensions -SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}'); - json_object -------------------------------------------------------- - {"a" : "1", "b" : "2", "3" : null, "d e f" : "a b c"} -(1 row) - --- odd number error -SELECT json_object('{a,b,c}'); -ERROR: array must have even number of elements --- one column error -SELECT json_object('{{a},{b}}'); -ERROR: array must have two columns --- too many columns error -SELECT json_object('{{a,b,c},{b,c,d}}'); -ERROR: array must have two columns --- too many dimensions error -SELECT json_object('{{{a,b},{c,d}},{{b,c},{d,e}}}'); -ERROR: wrong number of array subscripts ---two argument form of json_object -select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}'); - json_object ------------------------------------------------------- - {"a" : "1", "b" : "2", "c" : "3", "d e f" : "a b c"} -(1 row) - --- too many dimensions -SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}', '{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}'); -ERROR: wrong number of array subscripts --- mismatched dimensions -select json_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}'); -ERROR: mismatched array dimensions -select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}'); -ERROR: mismatched array dimensions --- null key error -select json_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}'); -ERROR: null value not allowed for object key --- empty key is allowed -select json_object('{a,b,"","d e f"}','{1,2,3,"a b c"}'); - json_object ------------------------------------------------------ - {"a" : "1", "b" : "2", "" : "3", "d e f" : "a b c"} -(1 row) - --- json_to_record and json_to_recordset -select * from json_to_record('{"a":1,"b":"foo","c":"bar"}') - as x(a int, b text, d text); - a | b | d ----+-----+--- - 1 | foo | -(1 row) - -select * from json_to_recordset('[{"a":1,"b":"foo","d":false},{"a":2,"b":"bar","c":true}]') - as x(a int, b text, c boolean); - a | b | c ----+-----+--- - 1 | foo | - 2 | bar | t -(2 rows) - -select * from json_to_recordset('[{"a":1,"b":{"d":"foo"},"c":true},{"a":2,"c":false,"b":{"d":"bar"}}]') - as x(a int, b json, c boolean); - a | b | c ----+-------------+--- - 1 | {"d":"foo"} | t - 2 | {"d":"bar"} | f -(2 rows) - --- 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) - |