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Diffstat (limited to '')
| -rw-r--r-- | src/test/regress/expected/json.out | 2603 |
1 files changed, 2603 insertions, 0 deletions
diff --git a/src/test/regress/expected/json.out b/src/test/regress/expected/json.out new file mode 100644 index 0000000..c4156cf --- /dev/null +++ b/src/test/regress/expected/json.out @@ -0,0 +1,2603 @@ +-- 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... +-- 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: +--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) + +SELECT * FROM + json_populate_record(null::record, '{"x": 776}') AS (x int, y int); + x | y +-----+--- + 776 | +(1 row) + +-- composite domain +SELECT json_populate_record(null::j_ordered_pair, '{"x": 0, "y": 1}'); + json_populate_record +---------------------- + (0,1) +(1 row) + +SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 0}'); + json_populate_record +---------------------- + (0,2) +(1 row) + +SELECT json_populate_record(row(1,2)::j_ordered_pair, '{"x": 1, "y": 0}'); +ERROR: value for domain j_ordered_pair violates check constraint "j_ordered_pair_check" +-- populate_recordset +select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +--------+---+-------------------------- + blurfl | | + | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +--------+----+-------------------------- + blurfl | 99 | + def | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +--------+---+-------------------------- + blurfl | | + | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +--------+----+-------------------------- + blurfl | 99 | + def | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +---------------+----+-------------------------- + [100,200,300] | 99 | + {"z":true} | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(row('def',99,null)::jpop,'[{"c":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q; +ERROR: invalid input syntax for type timestamp: "[100,200,300]" +create type jpop2 as (a int, b json, c int, d int); +select * from json_populate_recordset(null::jpop2, '[{"a":2,"c":3,"b":{"z":4},"d":6}]') q; + a | b | c | d +---+---------+---+--- + 2 | {"z":4} | 3 | 6 +(1 row) + +select * from json_populate_recordset(null::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +--------+---+-------------------------- + blurfl | | + | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":"blurfl","x":43.2},{"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +--------+----+-------------------------- + blurfl | 99 | + def | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +select * from json_populate_recordset(row('def',99,null)::jpop,'[{"a":[100,200,300],"x":43.2},{"a":{"z":true},"b":3,"c":"2012-01-20 10:42:53"}]') q; + a | b | c +---------------+----+-------------------------- + [100,200,300] | 99 | + {"z":true} | 3 | Fri Jan 20 10:42:53 2012 +(2 rows) + +-- anonymous record type +SELECT json_populate_recordset(null::record, '[{"x": 0, "y": 1}]'); +ERROR: 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: argument 1 cannot be null +HINT: Object keys should be text. +SELECT json_build_object('a', NULL); -- ok + json_build_object +------------------- + {"a" : null} +(1 row) + +SELECT json_build_object(VARIADIC NULL::text[]); -- ok + json_build_object +------------------- + +(1 row) + +SELECT json_build_object(VARIADIC '{}'::text[]); -- ok + json_build_object +------------------- + {} +(1 row) + +SELECT json_build_object(VARIADIC '{a,b,c}'::text[]); -- error +ERROR: argument list must have even number of elements +HINT: The arguments of json_build_object() must consist of alternating keys and values. +SELECT json_build_object(VARIADIC ARRAY['a', NULL]::text[]); -- ok + json_build_object +------------------- + {"a" : null} +(1 row) + +SELECT json_build_object(VARIADIC ARRAY[NULL, 'a']::text[]); -- error, key cannot be NULL +ERROR: argument 1 cannot be null +HINT: Object keys should be text. +SELECT json_build_object(VARIADIC '{1,2,3,4}'::text[]); -- ok + json_build_object +------------------------ + {"1" : "2", "3" : "4"} +(1 row) + +SELECT json_build_object(VARIADIC '{1,2,3,4}'::int[]); -- ok + json_build_object +-------------------- + {"1" : 2, "3" : 4} +(1 row) + +SELECT json_build_object(VARIADIC '{{1,4},{2,5},{3,6}}'::int[][]); -- ok + json_build_object +----------------------------- + {"1" : 4, "2" : 5, "3" : 6} +(1 row) + +-- empty objects/arrays +SELECT json_build_array(); + json_build_array +------------------ + [] +(1 row) + +SELECT json_build_object(); + json_build_object +------------------- + {} +(1 row) + +-- make sure keys are quoted +SELECT json_build_object(1,2); + json_build_object +------------------- + {"1" : 2} +(1 row) + +-- keys must be scalar and not null +SELECT json_build_object(null,2); +ERROR: argument 1 cannot be null +HINT: Object keys should be text. +SELECT json_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r; +ERROR: key value must be scalar, not array, composite, or json +SELECT json_build_object(json '{"a":1,"b":2}', 3); +ERROR: key value must be scalar, not array, composite, or json +SELECT json_build_object('{1,2,3}'::int[], 3); +ERROR: key value must be scalar, not array, composite, or json +CREATE TEMP TABLE foo (serial_num int, name text, type text); +INSERT INTO foo VALUES (847001,'t15','GE1043'); +INSERT INTO foo VALUES (847002,'t16','GE1043'); +INSERT INTO foo VALUES (847003,'sub-alpha','GESS90'); +SELECT json_build_object('turbines',json_object_agg(serial_num,json_build_object('name',name,'type',type))) +FROM foo; + json_build_object +------------------------------------------------------------------------------------------------------------------------------------------------------------------------- + {"turbines" : { "847001" : {"name" : "t15", "type" : "GE1043"}, "847002" : {"name" : "t16", "type" : "GE1043"}, "847003" : {"name" : "sub-alpha", "type" : "GESS90"} }} +(1 row) + +SELECT json_object_agg(name, type) FROM foo; + json_object_agg +---------------------------------------------------------------- + { "t15" : "GE1043", "t16" : "GE1043", "sub-alpha" : "GESS90" } +(1 row) + +INSERT INTO foo VALUES (999999, NULL, 'bar'); +SELECT json_object_agg(name, type) FROM foo; +ERROR: field name must not be null +-- json_object +-- empty object, one dimension +SELECT json_object('{}'); + json_object +------------- + {} +(1 row) + +-- empty object, two dimensions +SELECT json_object('{}', '{}'); + json_object +------------- + {} +(1 row) + +-- one dimension +SELECT json_object('{a,1,b,2,3,NULL,"d e f","a b c"}'); + json_object +------------------------------------------------------- + {"a" : "1", "b" : "2", "3" : null, "d e f" : "a b c"} +(1 row) + +-- same but with two dimensions +SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}'); + json_object +------------------------------------------------------- + {"a" : "1", "b" : "2", "3" : null, "d e f" : "a b c"} +(1 row) + +-- odd number error +SELECT json_object('{a,b,c}'); +ERROR: array must have even number of elements +-- one column error +SELECT json_object('{{a},{b}}'); +ERROR: array must have two columns +-- too many columns error +SELECT json_object('{{a,b,c},{b,c,d}}'); +ERROR: array must have two columns +-- too many dimensions error +SELECT json_object('{{{a,b},{c,d}},{{b,c},{d,e}}}'); +ERROR: wrong number of array subscripts +--two argument form of json_object +select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}'); + json_object +------------------------------------------------------ + {"a" : "1", "b" : "2", "c" : "3", "d e f" : "a b c"} +(1 row) + +-- too many dimensions +SELECT json_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}', '{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}'); +ERROR: wrong number of array subscripts +-- mismatched dimensions +select json_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}'); +ERROR: mismatched array dimensions +select json_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}'); +ERROR: mismatched array dimensions +-- null key error +select json_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}'); +ERROR: null value not allowed for object key +-- empty key is allowed +select json_object('{a,b,"","d e f"}','{1,2,3,"a b c"}'); + json_object +----------------------------------------------------- + {"a" : "1", "b" : "2", "" : "3", "d e f" : "a b c"} +(1 row) + +-- json_to_record and json_to_recordset +select * from json_to_record('{"a":1,"b":"foo","c":"bar"}') + as x(a int, b text, d text); + a | b | d +---+-----+--- + 1 | foo | +(1 row) + +select * from json_to_recordset('[{"a":1,"b":"foo","d":false},{"a":2,"b":"bar","c":true}]') + as x(a int, b text, c boolean); + a | b | c +---+-----+--- + 1 | foo | + 2 | bar | t +(2 rows) + +select * from json_to_recordset('[{"a":1,"b":{"d":"foo"},"c":true},{"a":2,"c":false,"b":{"d":"bar"}}]') + as x(a int, b json, c boolean); + a | b | c +---+-------------+--- + 1 | {"d":"foo"} | t + 2 | {"d":"bar"} | f +(2 rows) + +select *, c is null as c_is_null +from json_to_record('{"a":1, "b":{"c":16, "d":2}, "x":8, "ca": ["1 2", 3], "ia": [[1,2],[3,4]], "r": {"a": "aaa", "b": 123}}'::json) + as t(a int, b json, c text, x int, ca char(5)[], ia int[][], r jpop); + a | b | c | x | ca | ia | r | c_is_null +---+-----------------+---+---+-------------------+---------------+------------+----------- + 1 | {"c":16, "d":2} | | 8 | {"1 2 ","3 "} | {{1,2},{3,4}} | (aaa,123,) | t +(1 row) + +select *, c is null as c_is_null +from json_to_recordset('[{"a":1, "b":{"c":16, "d":2}, "x":8}]'::json) + as t(a int, b json, c text, x int); + a | b | c | x | c_is_null +---+-----------------+---+---+----------- + 1 | {"c":16, "d":2} | | 8 | t +(1 row) + +select * from json_to_record('{"ia": null}') as x(ia _int4); + ia +---- + +(1 row) + +select * from json_to_record('{"ia": 123}') as x(ia _int4); +ERROR: expected JSON array +HINT: See the value of key "ia". +select * from json_to_record('{"ia": [1, "2", null, 4]}') as x(ia _int4); + ia +-------------- + {1,2,NULL,4} +(1 row) + +select * from json_to_record('{"ia": [[1, 2], [3, 4]]}') as x(ia _int4); + ia +--------------- + {{1,2},{3,4}} +(1 row) + +select * from json_to_record('{"ia": [[1], 2]}') as x(ia _int4); +ERROR: expected JSON array +HINT: See the array element [1] of key "ia". +select * from json_to_record('{"ia": [[1], [2, 3]]}') as x(ia _int4); +ERROR: malformed JSON array +DETAIL: Multidimensional arrays must have sub-arrays with matching dimensions. +select * from json_to_record('{"ia2": [1, 2, 3]}') as x(ia2 int[][]); + ia2 +--------- + {1,2,3} +(1 row) + +select * from json_to_record('{"ia2": [[1, 2], [3, 4]]}') as x(ia2 int4[][]); + ia2 +--------------- + {{1,2},{3,4}} +(1 row) + +select * from json_to_record('{"ia2": [[[1], [2], [3]]]}') as x(ia2 int4[][]); + ia2 +----------------- + {{{1},{2},{3}}} +(1 row) + +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) + |