Couchbase N1ql query for updating new objet to JSON array - couchbase

Question

I have the following sample JSON
"address":{
"details":
[
{
"id" :<system generated UUID>,
"city" :{"type" : "string"},
"country" :{"type" : "string"},
"name" :{"type" : "string"},
"url" :{"type" : "string"},
"contacts" :
[{
"email":{"type" : "string"},
"phone":{"type" : "number"}
}]
}
]
}
I want the data to be in the following ways
Example 1:
"address":
{
"details": [
{
"id": 1234,
"city": "Medway",
"country": "United Kingdom",
"name": "Medway Youth Hostel",
"url": "http://www.yha.org.uk"
}]
}
Example 2:
"address":
{
"details": [
{
"id": 1234,
"city": "Medway",
"country": "United Kingdom",
"name": "Medway Youth Hostel",
"url": "http://www.yha.org.uk",
"contact": [
{
"email": "hari34#gmail.com",
"phone": 6789435634
}
]
}]
}
Example 3 :
"address":
{
"details": [
{
"id": 1234,
"city": "Medway",
"country": "United Kingdom",
"name": "Medway Youth Hostel",
"url": "http://www.yha.org.uk",
"contact": [
{
"email": "hari34#gmail.com",
"phone": 6789435634
},
{
"email": "sri123#gmail.com",
"phone": 9876655555
}
]
}]
}
Example 4:
"address":
{
"details": [
{
"id": 1234,
"city": "Medway",
"country": "United Kingdom",
"name": "Medway Youth Hostel",
"url": "http://www.yha.org.uk",
"contact": [
{
"email": "hari34#gmail.com",
"phone": 6789435634
}
]
},
{
"id": 3456,
"city": "Texas",
"country": "USA",
"name": "Texas Youth Hostel",
"url": "http://www.yha.org.uk",
"contact": [
{
"email": "ram123#gmail.com",
"phone": 876543219
}
]
}
]
}
I am very new to n1ql query, would anyone please help me to find the solution for inserting/Update an array to the object with in object. Example 1 is inserting an data to JSON, Example 2 is updating the data to Example 1 and follows...
1. Please help to get n1ql queries that satisfies above examples.
2. How to generate an UUID to id field in the document

Answer 1

1) Appends array never checks if element already exist in the array
INSERT INTO default VALUES ("k01", { "details": [ { "id": 1234, "city": "Medway", "country": "United Kingdom", "name": "Medway Youth Hostel", "url": "http://www.yha.org.uk" }] });
UPDATE default AS d SET e.contact = [ { "email": "hari34#gmail.com", "phone": 6789435634 } ]
FOR e IN d.details WHEN e.id = 1234 END
WHERE META().id = "k01";
UPDATE default AS d SET e.contact = ARRAY_APPEND(e.contact,{ "email": "sri123#gmail.com", "phone": 9876655555 })
FOR e IN d.details WHEN e.id = 1234 END
WHERE META().id = "k01";
UPDATE default AS d SET d.details = ARRAY_APPEND(d.details,{ "id": 3456, "city": "Texas", "country": "USA", "name": "Texas Youth Hostel", "url": "http://www.yha.org.uk", "contact": [ { "email": "ram123#gmail.com", "phone": 876543219 } ] })
WHERE META().id = "k01";
SELECT * from default USE KEYS["k01"];
2) USE UUID() function like below
INSERT INTO default VALUES ("k01", { "details": [ { "id": UUID(), "city": "Medway", "country": "United Kingdom", "name": "Medway Youth Hostel", "url": "http://www.yha.org.uk" }] });