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106 lines
3.5 KiB
Plaintext
106 lines
3.5 KiB
Plaintext
-- { echo }
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SELECT '--JSON_VALUE--';
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--JSON_VALUE--
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SELECT JSON_VALUE('{"hello":1}', '$'); -- root is a complex object => default value (empty string)
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SELECT JSON_VALUE('{"hello":1}', '$.hello');
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1
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SELECT JSON_VALUE('{"hello":1.2}', '$.hello');
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1.2
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SELECT JSON_VALUE('{"hello":true}', '$.hello');
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true
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SELECT JSON_VALUE('{"hello":"world"}', '$.hello');
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world
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SELECT JSON_VALUE('{"hello":null}', '$.hello');
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null
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SELECT JSON_VALUE('{"hello":["world","world2"]}', '$.hello');
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SELECT JSON_VALUE('{"hello":{"world":"!"}}', '$.hello');
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SELECT JSON_VALUE('{hello:world}', '$.hello'); -- invalid json => default value (empty string)
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SELECT JSON_VALUE('', '$.hello');
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SELECT JSON_VALUE('{"foo foo":"bar"}', '$."foo foo"');
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bar
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SELECT JSON_VALUE('{"hello":"\\uD83C\\uDF3A \\uD83C\\uDF38 \\uD83C\\uDF37 Hello, World \\uD83C\\uDF37 \\uD83C\\uDF38 \\uD83C\\uDF3A"}', '$.hello');
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🌺 🌸 🌷 Hello, World 🌷 🌸 🌺
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SELECT JSON_VALUE('{"a":"Hello \\"World\\" \\\\"}', '$.a');
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Hello "World" \\
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select JSON_VALUE('{"a":"\\n\\u0000"}', '$.a');
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\n\0
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select JSON_VALUE('{"a":"\\u263a"}', '$.a');
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☺
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SELECT '--JSON_QUERY--';
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--JSON_QUERY--
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SELECT JSON_QUERY('{"hello":1}', '$');
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[{"hello":1}]
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SELECT JSON_QUERY('{"hello":1}', '$.hello');
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[1]
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SELECT JSON_QUERY('{"hello":1.2}', '$.hello');
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[1.2]
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SELECT JSON_QUERY('{"hello":true}', '$.hello');
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[true]
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SELECT JSON_QUERY('{"hello":"world"}', '$.hello');
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["world"]
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SELECT JSON_QUERY('{"hello":null}', '$.hello');
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[null]
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SELECT JSON_QUERY('{"hello":["world","world2"]}', '$.hello');
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[["world","world2"]]
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SELECT JSON_QUERY('{"hello":{"world":"!"}}', '$.hello');
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[{"world":"!"}]
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SELECT JSON_QUERY( '{hello:{"world":"!"}}}', '$.hello'); -- invalid json => default value (empty string)
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SELECT JSON_QUERY('', '$.hello');
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SELECT JSON_QUERY('{"array":[[0, 1, 2, 3, 4, 5], [0, -1, -2, -3, -4, -5]]}', '$.array[*][0 to 2, 4]');
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[0, 1, 4, 0, -1, -4]
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SELECT '--JSON_EXISTS--';
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--JSON_EXISTS--
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SELECT JSON_EXISTS('{"hello":1}', '$');
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1
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SELECT JSON_EXISTS('', '$');
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0
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SELECT JSON_EXISTS('{}', '$');
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1
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SELECT JSON_EXISTS('{"hello":1}', '$.hello');
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1
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SELECT JSON_EXISTS('{"hello":1,"world":2}', '$.world');
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1
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SELECT JSON_EXISTS('{"hello":{"world":1}}', '$.world');
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0
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SELECT JSON_EXISTS('{"hello":{"world":1}}', '$.hello.world');
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1
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SELECT JSON_EXISTS('{hello:world}', '$.hello'); -- invalid json => default value (zero integer)
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0
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SELECT JSON_EXISTS('', '$.hello');
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0
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SELECT JSON_EXISTS('{"hello":["world"]}', '$.hello[*]');
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1
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SELECT JSON_EXISTS('{"hello":["world"]}', '$.hello[0]');
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1
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SELECT JSON_EXISTS('{"hello":["world"]}', '$.hello[1]');
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0
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SELECT JSON_EXISTS('{"a":[{"b":1},{"c":2}]}', '$.a[*].b');
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1
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SELECT JSON_EXISTS('{"a":[{"b":1},{"c":2}]}', '$.a[*].f');
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0
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SELECT JSON_EXISTS('{"a":[[{"b":1}, {"g":1}],[{"h":1},{"y":1}]]}', '$.a[*][0].h');
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1
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SELECT '--MANY ROWS--';
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--MANY ROWS--
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DROP TABLE IF EXISTS 01889_sql_json;
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CREATE TABLE 01889_sql_json (id UInt8, json String) ENGINE = MergeTree ORDER BY id;
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INSERT INTO 01889_sql_json(id, json) VALUES(0, '{"name":"Ivan","surname":"Ivanov","friends":["Vasily","Kostya","Artyom"]}');
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INSERT INTO 01889_sql_json(id, json) VALUES(1, '{"name":"Katya","surname":"Baltica","friends":["Tihon","Ernest","Innokentiy"]}');
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INSERT INTO 01889_sql_json(id, json) VALUES(2, '{"name":"Vitali","surname":"Brown","friends":["Katya","Anatoliy","Ivan","Oleg"]}');
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SELECT id, JSON_QUERY(json, '$.friends[0 to 2]') FROM 01889_sql_json ORDER BY id;
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0 ["Vasily", "Kostya"]
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1 ["Tihon", "Ernest"]
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2 ["Katya", "Anatoliy"]
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SELECT id, JSON_VALUE(json, '$.friends[0]') FROM 01889_sql_json ORDER BY id;
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0 Vasily
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1 Tihon
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2 Katya
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DROP TABLE 01889_sql_json;
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