mirror of
https://github.com/GreptimeTeam/greptimedb.git
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f73fb82133
* feat: add respective json_is UDFs * refactor: rename to_json to parse_json * chore: happy clippy * chore: some rename * fix: small fixes
80 lines
2.5 KiB
SQL
80 lines
2.5 KiB
SQL
-- json_get functions --
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SELECT json_get_int(parse_json('{"a": {"b": {"c": 1}}}'), 'a.b.c');
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SELECT json_get_float(parse_json('{"a": {"b": {"c": 1.234}}}'), 'a:b.c');
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SELECT json_get_string(parse_json('{"a": {"b": {"c": "foo"}}}'), 'a.b:c');
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SELECT json_get_bool(parse_json('{"a": {"b": {"c": true}}}'), 'a.b["c"]');
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SELECT json_get_int(parse_json('{"a": {"b": {"c": {"d": 1}}}}'), 'a.b');
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SELECT json_get_string(parse_json('{"a": {"b": {"c": {"d": 1}}}}'), 'a.b');
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-- test functions with table rows --
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CREATE TABLE jsons(j JSON, ts timestamp time index);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": 1}}}'), 1);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": 1.234}}}'), 2);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": "foo"}}}'), 3);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": true}}}'), 4);
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SELECT json_get_int(j, 'a.b.c') FROM jsons;
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SELECT json_get_float(j, 'a["b"].c') FROM jsons;
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SELECT json_get_string(j, 'a.b.c?(@ == 1)') FROM jsons;
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SELECT json_get_bool(j, 'a.b.c') FROM jsons;
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SELECT json_get_int(j, 'a.b["c"]') FROM jsons;
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DROP TABLE jsons;
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-- test functions with arrays --
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CREATE TABLE jsons(j JSON, ts timestamp time index);
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INSERT INTO jsons VALUES(parse_json('["a", "bcde", "", "Long time ago, there is a little pig flying in the sky"]'), 1);
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INSERT INTO jsons VALUES(parse_json('[true, false, false, false]'), 2);
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INSERT INTO jsons VALUES(parse_json('[1, 0, -2147483649, 2147483648]'), 3);
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INSERT INTO jsons VALUES(parse_json('[1.2, 3.1415926535897932384626, -3e123, 1e100]'), 4);
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SELECT json_get_int(j, '[0]') FROM jsons;
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SELECT json_get_float(j, '[1]') FROM jsons;
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SELECT json_get_bool(j, '[2]') FROM jsons;
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SELECT json_get_string(j, '[3]') FROM jsons;
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DROP TABLE jsons;
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-- test functions in WHERE clause --
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CREATE TABLE jsons(j JSON, ts timestamp time index);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": 1}}}'), 1);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": 1.234}}}'), 2);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": "foo"}}}'), 3);
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INSERT INTO jsons VALUES(parse_json('{"a": {"b": {"c": true}}}'), 4);
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SELECT json_to_string(j) FROM jsons WHERE json_get_int(j, 'a.b.c') = 1;
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SELECT json_to_string(j) FROM jsons WHERE json_get_float(j, 'a.b.c') = 1.234;
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SELECT json_to_string(j) FROM jsons WHERE json_get_string(j, 'a.b.c') = 'foo';
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SELECT json_to_string(j) FROM jsons WHERE json_get_bool(j, 'a.b.c') = true;
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SELECT json_to_string(j) FROM jsons WHERE CAST(json_get_int(j, 'a.b.c') AS BOOLEAN);
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DROP TABLE jsons;
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