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https://github.com/postgres/postgres.git
synced 2025-07-28 23:42:10 +03:00
Add several generator functions for jsonb that exist for json.
The functions are:
to_jsonb()
jsonb_object()
jsonb_build_object()
jsonb_build_array()
jsonb_agg()
jsonb_object_agg()
Also along the way some better logic is implemented in
json_categorize_type() to match that in the newly implemented
jsonb_categorize_type().
Andrew Dunstan, reviewed by Pavel Stehule and Alvaro Herrera.
This commit is contained in:
Andrew Dunstan
@ -301,6 +301,65 @@ SELECT array_to_json(ARRAY [jsonb '{"a":1}', jsonb '{"b":[2,3]}']);
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[{"a": 1},{"b": [2, 3]}]
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(1 row)
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-- to_jsonb, timestamps
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select to_jsonb(timestamp '2014-05-28 12:22:35.614298');
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to_jsonb
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------------------------------
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"2014-05-28T12:22:35.614298"
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(1 row)
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BEGIN;
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SET LOCAL TIME ZONE 10.5;
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select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
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to_jsonb
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------------------------------------
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"2014-05-29T02:52:35.614298+10:30"
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(1 row)
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SET LOCAL TIME ZONE -8;
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select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
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to_jsonb
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------------------------------------
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"2014-05-28T08:22:35.614298-08:00"
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(1 row)
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COMMIT;
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-- unicode escape - backslash is not escaped
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select to_jsonb(text '\uabcd');
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to_jsonb
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----------
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"\uabcd"
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(1 row)
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-- any other backslash is escaped
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select to_jsonb(text '\abcd');
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to_jsonb
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----------
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"\\abcd"
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(1 row)
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--jsonb_agg
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CREATE TEMP TABLE rows AS
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SELECT x, 'txt' || x as y
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FROM generate_series(1,3) AS x;
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SELECT jsonb_agg(q)
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FROM ( SELECT $$a$$ || x AS b, y AS c,
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ARRAY[ROW(x.*,ARRAY[1,2,3]),
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ROW(y.*,ARRAY[4,5,6])] AS z
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FROM generate_series(1,2) x,
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generate_series(4,5) y) q;
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jsonb_agg
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--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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[{"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]}]}]
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(1 row)
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SELECT jsonb_agg(q)
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FROM rows q;
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jsonb_agg
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-----------------------------------------------------------------------
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[{"x": 1, "y": "txt1"}, {"x": 2, "y": "txt2"}, {"x": 3, "y": "txt3"}]
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(1 row)
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-- jsonb extraction functions
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CREATE TEMP TABLE test_jsonb (
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json_type text,
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@ -1256,6 +1315,120 @@ SELECT jsonb_typeof('"1.0"') AS string;
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string
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(1 row)
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-- jsonb_build_array, jsonb_build_object, jsonb_object_agg
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SELECT jsonb_build_array('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
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jsonb_build_array
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-------------------------------------------------------------------------
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["a", 1, "b", 1.2, "c", true, "d", null, "e", {"x": 3, "y": [1, 2, 3]}]
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(1 row)
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SELECT jsonb_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
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jsonb_build_object
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-------------------------------------------------------------------------
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{"a": 1, "b": 1.2, "c": true, "d": null, "e": {"x": 3, "y": [1, 2, 3]}}
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(1 row)
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SELECT jsonb_build_object(
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'a', jsonb_build_object('b',false,'c',99),
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'd', jsonb_build_object('e',array[9,8,7]::int[],
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'f', (select row_to_json(r) from ( select relkind, oid::regclass as name from pg_class where relname = 'pg_class') r)));
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jsonb_build_object
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------------------------------------------------------------------------------------------------
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{"a": {"b": false, "c": 99}, "d": {"e": [9, 8, 7], "f": {"name": "pg_class", "relkind": "r"}}}
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(1 row)
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-- empty objects/arrays
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SELECT jsonb_build_array();
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jsonb_build_array
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-------------------
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[]
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(1 row)
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SELECT jsonb_build_object();
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jsonb_build_object
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--------------------
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{}
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(1 row)
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-- make sure keys are quoted
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SELECT jsonb_build_object(1,2);
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jsonb_build_object
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--------------------
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{"1": 2}
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(1 row)
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-- keys must be scalar and not null
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SELECT jsonb_build_object(null,2);
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ERROR: arg 1: key cannot be null
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SELECT jsonb_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r;
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ERROR: key value must be scalar, not array, composite or json
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SELECT jsonb_build_object(json '{"a":1,"b":2}', 3);
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ERROR: key value must be scalar, not array, composite or json
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SELECT jsonb_build_object('{1,2,3}'::int[], 3);
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ERROR: key value must be scalar, not array, composite or json
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CREATE TEMP TABLE foo (serial_num int, name text, type text);
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INSERT INTO foo VALUES (847001,'t15','GE1043');
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INSERT INTO foo VALUES (847002,'t16','GE1043');
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INSERT INTO foo VALUES (847003,'sub-alpha','GESS90');
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SELECT jsonb_build_object('turbines',jsonb_object_agg(serial_num,jsonb_build_object('name',name,'type',type)))
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FROM foo;
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jsonb_build_object
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-------------------------------------------------------------------------------------------------------------------------------------------------------------
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{"turbines": {"847001": {"name": "t15", "type": "GE1043"}, "847002": {"name": "t16", "type": "GE1043"}, "847003": {"name": "sub-alpha", "type": "GESS90"}}}
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(1 row)
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-- jsonb_object
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-- one dimension
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SELECT jsonb_object('{a,1,b,2,3,NULL,"d e f","a b c"}');
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jsonb_object
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---------------------------------------------------
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{"3": null, "a": "1", "b": "2", "d e f": "a b c"}
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(1 row)
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-- same but with two dimensions
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SELECT jsonb_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
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jsonb_object
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---------------------------------------------------
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{"3": null, "a": "1", "b": "2", "d e f": "a b c"}
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(1 row)
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-- odd number error
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SELECT jsonb_object('{a,b,c}');
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ERROR: array must have even number of elements
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-- one column error
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SELECT jsonb_object('{{a},{b}}');
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ERROR: array must have two columns
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-- too many columns error
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SELECT jsonb_object('{{a,b,c},{b,c,d}}');
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ERROR: array must have two columns
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-- too many dimensions error
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SELECT jsonb_object('{{{a,b},{c,d}},{{b,c},{d,e}}}');
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ERROR: wrong number of array subscripts
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--two argument form of jsonb_object
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select jsonb_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}');
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jsonb_object
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--------------------------------------------------
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{"a": "1", "b": "2", "c": "3", "d e f": "a b c"}
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(1 row)
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-- too many dimensions
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SELECT jsonb_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"}}');
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ERROR: wrong number of array subscripts
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-- mismatched dimensions
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select jsonb_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}');
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ERROR: mismatched array dimensions
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select jsonb_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}');
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ERROR: mismatched array dimensions
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-- null key error
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select jsonb_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}');
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ERROR: null value not allowed for object key
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-- empty key is allowed
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select jsonb_object('{a,b,"","d e f"}','{1,2,3,"a b c"}');
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jsonb_object
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-------------------------------------------------
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{"": "3", "a": "1", "b": "2", "d e f": "a b c"}
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(1 row)
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-- extract_path, extract_path_as_text
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SELECT jsonb_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
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jsonb_extract_path
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@ -301,6 +301,65 @@ SELECT array_to_json(ARRAY [jsonb '{"a":1}', jsonb '{"b":[2,3]}']);
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[{"a": 1},{"b": [2, 3]}]
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(1 row)
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-- to_jsonb, timestamps
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select to_jsonb(timestamp '2014-05-28 12:22:35.614298');
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to_jsonb
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------------------------------
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"2014-05-28T12:22:35.614298"
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(1 row)
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BEGIN;
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SET LOCAL TIME ZONE 10.5;
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select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
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to_jsonb
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------------------------------------
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"2014-05-29T02:52:35.614298+10:30"
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(1 row)
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SET LOCAL TIME ZONE -8;
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select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
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to_jsonb
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------------------------------------
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"2014-05-28T08:22:35.614298-08:00"
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(1 row)
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COMMIT;
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-- unicode escape - backslash is not escaped
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select to_jsonb(text '\uabcd');
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to_jsonb
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----------
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"\uabcd"
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(1 row)
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-- any other backslash is escaped
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select to_jsonb(text '\abcd');
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to_jsonb
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----------
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"\\abcd"
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(1 row)
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--jsonb_agg
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CREATE TEMP TABLE rows AS
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SELECT x, 'txt' || x as y
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FROM generate_series(1,3) AS x;
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SELECT jsonb_agg(q)
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FROM ( SELECT $$a$$ || x AS b, y AS c,
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ARRAY[ROW(x.*,ARRAY[1,2,3]),
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ROW(y.*,ARRAY[4,5,6])] AS z
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FROM generate_series(1,2) x,
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generate_series(4,5) y) q;
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jsonb_agg
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--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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[{"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]}]}]
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(1 row)
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SELECT jsonb_agg(q)
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FROM rows q;
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jsonb_agg
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-----------------------------------------------------------------------
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[{"x": 1, "y": "txt1"}, {"x": 2, "y": "txt2"}, {"x": 3, "y": "txt3"}]
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(1 row)
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-- jsonb extraction functions
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CREATE TEMP TABLE test_jsonb (
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json_type text,
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@ -1256,6 +1315,120 @@ SELECT jsonb_typeof('"1.0"') AS string;
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string
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(1 row)
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-- jsonb_build_array, jsonb_build_object, jsonb_object_agg
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SELECT jsonb_build_array('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
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jsonb_build_array
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-------------------------------------------------------------------------
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["a", 1, "b", 1.2, "c", true, "d", null, "e", {"x": 3, "y": [1, 2, 3]}]
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(1 row)
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SELECT jsonb_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
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jsonb_build_object
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-------------------------------------------------------------------------
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{"a": 1, "b": 1.2, "c": true, "d": null, "e": {"x": 3, "y": [1, 2, 3]}}
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(1 row)
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SELECT jsonb_build_object(
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'a', jsonb_build_object('b',false,'c',99),
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'd', jsonb_build_object('e',array[9,8,7]::int[],
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'f', (select row_to_json(r) from ( select relkind, oid::regclass as name from pg_class where relname = 'pg_class') r)));
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jsonb_build_object
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------------------------------------------------------------------------------------------------
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{"a": {"b": false, "c": 99}, "d": {"e": [9, 8, 7], "f": {"name": "pg_class", "relkind": "r"}}}
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(1 row)
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-- empty objects/arrays
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SELECT jsonb_build_array();
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jsonb_build_array
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-------------------
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[]
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(1 row)
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SELECT jsonb_build_object();
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jsonb_build_object
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--------------------
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{}
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(1 row)
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-- make sure keys are quoted
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SELECT jsonb_build_object(1,2);
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jsonb_build_object
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--------------------
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{"1": 2}
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(1 row)
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-- keys must be scalar and not null
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SELECT jsonb_build_object(null,2);
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ERROR: arg 1: key cannot be null
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SELECT jsonb_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r;
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ERROR: key value must be scalar, not array, composite or json
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SELECT jsonb_build_object(json '{"a":1,"b":2}', 3);
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ERROR: key value must be scalar, not array, composite or json
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SELECT jsonb_build_object('{1,2,3}'::int[], 3);
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ERROR: key value must be scalar, not array, composite or json
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CREATE TEMP TABLE foo (serial_num int, name text, type text);
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INSERT INTO foo VALUES (847001,'t15','GE1043');
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INSERT INTO foo VALUES (847002,'t16','GE1043');
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INSERT INTO foo VALUES (847003,'sub-alpha','GESS90');
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SELECT jsonb_build_object('turbines',jsonb_object_agg(serial_num,jsonb_build_object('name',name,'type',type)))
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FROM foo;
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jsonb_build_object
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-------------------------------------------------------------------------------------------------------------------------------------------------------------
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{"turbines": {"847001": {"name": "t15", "type": "GE1043"}, "847002": {"name": "t16", "type": "GE1043"}, "847003": {"name": "sub-alpha", "type": "GESS90"}}}
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(1 row)
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-- jsonb_object
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-- one dimension
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SELECT jsonb_object('{a,1,b,2,3,NULL,"d e f","a b c"}');
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jsonb_object
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---------------------------------------------------
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{"3": null, "a": "1", "b": "2", "d e f": "a b c"}
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(1 row)
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-- same but with two dimensions
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SELECT jsonb_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
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jsonb_object
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---------------------------------------------------
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{"3": null, "a": "1", "b": "2", "d e f": "a b c"}
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(1 row)
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-- odd number error
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SELECT jsonb_object('{a,b,c}');
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ERROR: array must have even number of elements
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-- one column error
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SELECT jsonb_object('{{a},{b}}');
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ERROR: array must have two columns
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-- too many columns error
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SELECT jsonb_object('{{a,b,c},{b,c,d}}');
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ERROR: array must have two columns
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-- too many dimensions error
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SELECT jsonb_object('{{{a,b},{c,d}},{{b,c},{d,e}}}');
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ERROR: wrong number of array subscripts
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--two argument form of jsonb_object
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select jsonb_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}');
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jsonb_object
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--------------------------------------------------
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{"a": "1", "b": "2", "c": "3", "d e f": "a b c"}
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(1 row)
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-- too many dimensions
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SELECT jsonb_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"}}');
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ERROR: wrong number of array subscripts
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-- mismatched dimensions
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select jsonb_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}');
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ERROR: mismatched array dimensions
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select jsonb_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}');
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ERROR: mismatched array dimensions
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-- null key error
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select jsonb_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}');
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ERROR: null value not allowed for object key
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-- empty key is allowed
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select jsonb_object('{a,b,"","d e f"}','{1,2,3,"a b c"}');
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jsonb_object
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-------------------------------------------------
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{"": "3", "a": "1", "b": "2", "d e f": "a b c"}
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(1 row)
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-- extract_path, extract_path_as_text
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SELECT jsonb_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
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jsonb_extract_path
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@ -62,6 +62,41 @@ SELECT ' '::jsonb; -- ERROR, no value
|
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-- make sure jsonb is passed through json generators without being escaped
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SELECT array_to_json(ARRAY [jsonb '{"a":1}', jsonb '{"b":[2,3]}']);
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|
||||
-- to_jsonb, timestamps
|
||||
|
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select to_jsonb(timestamp '2014-05-28 12:22:35.614298');
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|
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BEGIN;
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||||
SET LOCAL TIME ZONE 10.5;
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select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
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SET LOCAL TIME ZONE -8;
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select to_jsonb(timestamptz '2014-05-28 12:22:35.614298-04');
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COMMIT;
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-- unicode escape - backslash is not escaped
|
||||
|
||||
select to_jsonb(text '\uabcd');
|
||||
|
||||
-- any other backslash is escaped
|
||||
|
||||
select to_jsonb(text '\abcd');
|
||||
|
||||
--jsonb_agg
|
||||
|
||||
CREATE TEMP TABLE rows AS
|
||||
SELECT x, 'txt' || x as y
|
||||
FROM generate_series(1,3) AS x;
|
||||
|
||||
SELECT jsonb_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;
|
||||
|
||||
SELECT jsonb_agg(q)
|
||||
FROM rows q;
|
||||
|
||||
-- jsonb extraction functions
|
||||
CREATE TEMP TABLE test_jsonb (
|
||||
json_type text,
|
||||
@ -263,6 +298,86 @@ SELECT jsonb_typeof('"hello"') AS string;
|
||||
SELECT jsonb_typeof('"true"') AS string;
|
||||
SELECT jsonb_typeof('"1.0"') AS string;
|
||||
|
||||
-- jsonb_build_array, jsonb_build_object, jsonb_object_agg
|
||||
|
||||
SELECT jsonb_build_array('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
|
||||
|
||||
SELECT jsonb_build_object('a',1,'b',1.2,'c',true,'d',null,'e',json '{"x": 3, "y": [1,2,3]}');
|
||||
|
||||
SELECT jsonb_build_object(
|
||||
'a', jsonb_build_object('b',false,'c',99),
|
||||
'd', jsonb_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)));
|
||||
|
||||
|
||||
-- empty objects/arrays
|
||||
SELECT jsonb_build_array();
|
||||
|
||||
SELECT jsonb_build_object();
|
||||
|
||||
-- make sure keys are quoted
|
||||
SELECT jsonb_build_object(1,2);
|
||||
|
||||
-- keys must be scalar and not null
|
||||
SELECT jsonb_build_object(null,2);
|
||||
|
||||
SELECT jsonb_build_object(r,2) FROM (SELECT 1 AS a, 2 AS b) r;
|
||||
|
||||
SELECT jsonb_build_object(json '{"a":1,"b":2}', 3);
|
||||
|
||||
SELECT jsonb_build_object('{1,2,3}'::int[], 3);
|
||||
|
||||
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 jsonb_build_object('turbines',jsonb_object_agg(serial_num,jsonb_build_object('name',name,'type',type)))
|
||||
FROM foo;
|
||||
|
||||
-- jsonb_object
|
||||
|
||||
-- one dimension
|
||||
SELECT jsonb_object('{a,1,b,2,3,NULL,"d e f","a b c"}');
|
||||
|
||||
-- same but with two dimensions
|
||||
SELECT jsonb_object('{{a,1},{b,2},{3,NULL},{"d e f","a b c"}}');
|
||||
|
||||
-- odd number error
|
||||
SELECT jsonb_object('{a,b,c}');
|
||||
|
||||
-- one column error
|
||||
SELECT jsonb_object('{{a},{b}}');
|
||||
|
||||
-- too many columns error
|
||||
SELECT jsonb_object('{{a,b,c},{b,c,d}}');
|
||||
|
||||
-- too many dimensions error
|
||||
SELECT jsonb_object('{{{a,b},{c,d}},{{b,c},{d,e}}}');
|
||||
|
||||
--two argument form of jsonb_object
|
||||
|
||||
select jsonb_object('{a,b,c,"d e f"}','{1,2,3,"a b c"}');
|
||||
|
||||
-- too many dimensions
|
||||
SELECT jsonb_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"}}');
|
||||
|
||||
-- mismatched dimensions
|
||||
|
||||
select jsonb_object('{a,b,c,"d e f",g}','{1,2,3,"a b c"}');
|
||||
|
||||
select jsonb_object('{a,b,c,"d e f"}','{1,2,3,"a b c",g}');
|
||||
|
||||
-- null key error
|
||||
|
||||
select jsonb_object('{a,b,NULL,"d e f"}','{1,2,3,"a b c"}');
|
||||
|
||||
-- empty key is allowed
|
||||
|
||||
select jsonb_object('{a,b,"","d e f"}','{1,2,3,"a b c"}');
|
||||
|
||||
|
||||
|
||||
-- extract_path, extract_path_as_text
|
||||
SELECT jsonb_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f4','f6');
|
||||
SELECT jsonb_extract_path('{"f2":{"f3":1},"f4":{"f5":99,"f6":"stringy"}}','f2');
|
||||
|
||||
Reference in New Issue
Block a user