read json file on postgresql

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Wed Mar 23 2022 03:57:58 GMT+0000 (Coordinated Universal Time)

Saved by @Bambibo9799

CREATE TABLE contacts(
    id INT NOT NULL PRIMARY KEY,
    name VARCHAR(50),
    age INT NOT NULL,
    active VARCHAR(10)
);

WITH contacts_json (doc) AS (VALUES(
'[
    {
        "id": 1,
        "name": "Jimmy",
        "age": 25,
        "active": "yes"
    },
    {
        "id": 2,
        "name": "Annie",
        "age": 22,
        "active": "yes"
    },
    {
        "id": 3,
        "name": "John",
        "age": 21,
        "active": "no"
    },
    {
        "id": 4,
        "name": "Mark",
        "age": 15,
        "active": "no"
    },
    {
        "id": 5,
        "name": "Shelly",
        "age": 20,
        "active": "yes"
    }
]'::json))
INSERT INTO contacts (id, name, age, active)
SELECT p.* FROM contacts_json l CROSS JOIN lateral
json_populate_recordset(NULL::contacts, doc) AS p ON conflict (id)
do UPDATE SET name = excluded.name, active = excluded.active;

select * from contacts as c

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