-- Tags: no-fasttest -- { echo } SELECT '--JSON_VALUE--'; SELECT JSON_VALUE('{"hello":1}', '$'); -- root is a complex object => default value (empty string) SELECT JSON_VALUE('{"hello":1}', '$.hello'); SELECT JSON_VALUE('{"hello":1.2}', '$.hello'); SELECT JSON_VALUE('{"hello":true}', '$.hello'); SELECT JSON_VALUE('{"hello":"world"}', '$.hello'); SELECT JSON_VALUE('{"hello":null}', '$.hello'); SELECT JSON_VALUE('{"hello":["world","world2"]}', '$.hello'); SELECT JSON_VALUE('{"hello":{"world":"!"}}', '$.hello'); SELECT JSON_VALUE('{hello:world}', '$.hello'); -- invalid json => default value (empty string) SELECT JSON_VALUE('', '$.hello'); SELECT JSON_VALUE('{"foo foo":"bar"}', '$."foo foo"'); SELECT JSON_VALUE('{"hello":"\\uD83C\\uDF3A \\uD83C\\uDF38 \\uD83C\\uDF37 Hello, World \\uD83C\\uDF37 \\uD83C\\uDF38 \\uD83C\\uDF3A"}', '$.hello'); SELECT JSON_VALUE('{"a":"Hello \\"World\\" \\\\"}', '$.a'); select JSON_VALUE('{"a":"\\n\\u0000"}', '$.a'); select JSON_VALUE('{"a":"\\u263a"}', '$.a'); SELECT '--JSON_QUERY--'; SELECT JSON_QUERY('{"hello":1}', '$'); SELECT JSON_QUERY('{"hello":1}', '$.hello'); SELECT JSON_QUERY('{"hello":1.2}', '$.hello'); SELECT JSON_QUERY('{"hello":true}', '$.hello'); SELECT JSON_QUERY('{"hello":"world"}', '$.hello'); SELECT JSON_QUERY('{"hello":null}', '$.hello'); SELECT JSON_QUERY('{"hello":["world","world2"]}', '$.hello'); SELECT JSON_QUERY('{"hello":{"world":"!"}}', '$.hello'); SELECT JSON_QUERY( '{hello:{"world":"!"}}}', '$.hello'); -- invalid json => default value (empty string) SELECT JSON_QUERY('', '$.hello'); SELECT JSON_QUERY('{"array":[[0, 1, 2, 3, 4, 5], [0, -1, -2, -3, -4, -5]]}', '$.array[*][0 to 2, 4]'); SELECT '--JSON_EXISTS--'; SELECT JSON_EXISTS('{"hello":1}', '$'); SELECT JSON_EXISTS('', '$'); SELECT JSON_EXISTS('{}', '$'); SELECT JSON_EXISTS('{"hello":1}', '$.hello'); SELECT JSON_EXISTS('{"hello":1,"world":2}', '$.world'); SELECT JSON_EXISTS('{"hello":{"world":1}}', '$.world'); SELECT JSON_EXISTS('{"hello":{"world":1}}', '$.hello.world'); SELECT JSON_EXISTS('{hello:world}', '$.hello'); -- invalid json => default value (zero integer) SELECT JSON_EXISTS('', '$.hello'); SELECT JSON_EXISTS('{"hello":["world"]}', '$.hello[*]'); SELECT JSON_EXISTS('{"hello":["world"]}', '$.hello[0]'); SELECT JSON_EXISTS('{"hello":["world"]}', '$.hello[1]'); SELECT JSON_EXISTS('{"a":[{"b":1},{"c":2}]}', '$.a[*].b'); SELECT JSON_EXISTS('{"a":[{"b":1},{"c":2}]}', '$.a[*].f'); SELECT JSON_EXISTS('{"a":[[{"b":1}, {"g":1}],[{"h":1},{"y":1}]]}', '$.a[*][0].h'); SELECT '--MANY ROWS--'; DROP TABLE IF EXISTS 01889_sql_json; CREATE TABLE 01889_sql_json (id UInt8, json String) ENGINE = MergeTree ORDER BY id; INSERT INTO 01889_sql_json(id, json) VALUES(0, '{"name":"Ivan","surname":"Ivanov","friends":["Vasily","Kostya","Artyom"]}'); INSERT INTO 01889_sql_json(id, json) VALUES(1, '{"name":"Katya","surname":"Baltica","friends":["Tihon","Ernest","Innokentiy"]}'); INSERT INTO 01889_sql_json(id, json) VALUES(2, '{"name":"Vitali","surname":"Brown","friends":["Katya","Anatoliy","Ivan","Oleg"]}'); SELECT id, JSON_QUERY(json, '$.friends[0 to 2]') FROM 01889_sql_json ORDER BY id; SELECT id, JSON_VALUE(json, '$.friends[0]') FROM 01889_sql_json ORDER BY id; DROP TABLE 01889_sql_json;