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feat: add respective get_by_path UDFs for JSON type (#4720)

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* feat: add respectiv get_by_path udf for json type

* Apply review comments

Co-authored-by: Weny Xu <wenymedia@gmail.com>

* fix: fix compile error

* refactor: change name of UDFs, add some tests

---------

Co-authored-by: Weny Xu <wenymedia@gmail.com>
This commit is contained in:
Yohan Wal
2024-09-11 16:17:57 +08:00
committed by GitHub
parent aa03d3b11c
commit 67fb3d003e
4 changed files with 715 additions and 0 deletions
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56
tests/cases/standalone/common/function/json.sql Normal file
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-- json_get functions --
SELECT json_get_int(to_json('{"a": {"b": {"c": 1}}}'), 'a.b.c');
SELECT json_get_float(to_json('{"a": {"b": {"c": 1.234}}}'), 'a:b.c');
SELECT json_get_string(to_json('{"a": {"b": {"c": "foo"}}}'), 'a.b:c');
SELECT json_get_bool(to_json('{"a": {"b": {"c": true}}}'), 'a.b["c"]');
SELECT json_get_int(to_json('{"a": {"b": {"c": {"d": 1}}}}'), 'a.b');
SELECT json_get_string(to_json('{"a": {"b": {"c": {"d": 1}}}}'), 'a.b');
-- test functions with table rows --
CREATE TABLE jsons(j JSON, ts timestamp time index);
INSERT INTO jsons VALUES(to_json('{"a": {"b": {"c": 1}}}'), 1);
INSERT INTO jsons VALUES(to_json('{"a": {"b": {"c": 1.234}}}'), 2);
INSERT INTO jsons VALUES(to_json('{"a": {"b": {"c": "foo"}}}'), 3);
INSERT INTO jsons VALUES(to_json('{"a": {"b": {"c": true}}}'), 4);
SELECT json_get_int(j, 'a.b.c') FROM jsons;
SELECT json_get_float(j, 'a["b"].c') FROM jsons;
SELECT json_get_string(j, 'a.b.c?(@ == 1)') FROM jsons;
SELECT json_get_bool(j, 'a.b.c') FROM jsons;
SELECT json_get_int(j, 'a.b["c"]') FROM jsons;
DROP TABLE jsons;
-- test functions with arrays --
CREATE TABLE jsons(j JSON, ts timestamp time index);
INSERT INTO jsons VALUES(to_json('["a", "bcde", "", "Long time ago, there is a little pig flying in the sky"]'), 1);
INSERT INTO jsons VALUES(to_json('[true, false, false, false]'), 2);
INSERT INTO jsons VALUES(to_json('[1, 0, -2147483649, 2147483648]'), 3);
INSERT INTO jsons VALUES(to_json('[1.2, 3.1415926535897932384626, -3e123, 1e100]'), 4);
SELECT json_get_int(j, '[0]') FROM jsons;
SELECT json_get_float(j, '[1]') FROM jsons;
SELECT json_get_bool(j, '[2]') FROM jsons;
SELECT json_get_string(j, '[3]') FROM jsons;
DROP TABLE jsons;