JSON_ARRAY (Lakehouse v1)

지정한 값으로 JSON 배열을 만듭니다.

Analyze Syntax

func.json_array(value1[, value2[, ...]])

Analyze Examples

func.json_array('fruits', func.json_array('apple', 'banana', 'orange'), func.json_object('price', 1.2, 'quantity', 3)) |
-----------------------------------------------------------------------------------------------------------------------+
["fruits",["apple","banana","orange"],{"price":1.2,"quantity":3}]                                                      |

SQL Syntax

JSON_ARRAY(value1[, value2[, ...]])

반환 타입

JSON 배열.

SQL Examples

SQL Examples 1: 상수 값이나 식으로 JSON 배열 만들기

SELECT JSON_ARRAY('PlaidCloud Lakehouse', 3.14, NOW(), TRUE, NULL);

json_array('databend', 3.14, now(), true, null)         |
--------------------------------------------------------+
["PlaidCloud Lakehouse",3.14,"2023-09-06 07:23:55.399070",true,null]|

SELECT JSON_ARRAY('fruits', JSON_ARRAY('apple', 'banana', 'orange'), JSON_OBJECT('price', 1.2, 'quantity', 3));

json_array('fruits', json_array('apple', 'banana', 'orange'), json_object('price', 1.2, 'quantity', 3))|
-------------------------------------------------------------------------------------------------------+
["fruits",["apple","banana","orange"],{"price":1.2,"quantity":3}]                                      |

SQL Examples 2: 테이블 데이터로 JSON 배열 만들기

CREATE TABLE products (
    ProductName VARCHAR(255),
    Price DECIMAL(10, 2)
);

INSERT INTO products (ProductName, Price)
VALUES
    ('Apple', 1.2),
    ('Banana', 0.5),
    ('Orange', 0.8);

SELECT JSON_ARRAY(ProductName, Price) FROM products;

json_array(productname, price)|
------------------------------+
["Apple",1.2]                 |
["Banana",0.5]                |
["Orange",0.8]                |