1

I have two jsons as follows

JSON 1 -

{
"2021-03-11": [
    {
        "14:30:00": 3000
    }
],
"2021-03-14": [
    {
        "14:30:00": 130
    }
]

}

JSON 2 -

{
"2021-03-02": [
    {
        "10:30:00": null
    }
],
"2021-03-11": [
    {
        "10:30:00": null
    },
    {
        "11:30:00": null
    },
    {
        "14:30:00": null
    }
],
"2021-03-12": [
    {
        "11:30:00": null
    }
],
"2021-03-14": [
    {
        "14:30:00": null
    }
],
"2021-03-15": [
    {
        "10:30:00": null
    }
]

}

I want to combine these two JSON like below

{
"2021-03-02": [
    {
        "10:30:00": null
    }
],
"2021-03-11": [
    {
        "10:30:00": null
    },
    {
        "11:30:00": null
    },
    {
        "14:30:00": 3000
    }
],
"2021-03-12": [
    {
        "11:30:00": null
    }
],
"2021-03-14": [
    {
        "14:30:00": 130
    }
],
"2021-03-15": [
    {
        "10:30:00": null
    }
]

}

But when I use the || operator, this is the result I get

{
{
"2021-03-02": [
    {
        "10:30:00": null
    }
],
"2021-03-11": [
    {
        "14:30:00": 3000
    }
],
"2021-03-12": [
    {
        "11:30:00": null
    }
],
"2021-03-14": [
    {
        "14:30:00": 130
    }
],
"2021-03-15": [
    {
        "10:30:00": null
    }
]

}

for some reason it only retrieves only one second level key value pair, is there anyway to fix this?

Improve this question
4
  • for some reason it only retrieves only one second level key value pair This is a norma: Concatenating two objects generates an object containing the union of their keys, taking the second object's value when there are duplicate keys. postgresql.org/docs/current/functions-json.html
    – Akina
    Mar 23, 2021 at 9:46
  • Concatenation does not iterate over all document strusture, it operates only on the upper level. So you must unnest your JSONs then nest them back.
    – Akina
    Mar 23, 2021 at 9:48
  • Have a look here for a starter: dba.stackexchange.com/questions/287155/… You'll have to add a level to deal with your nesting.
    – Gerard H. Pille
    Mar 23, 2021 at 9:51
  • See here or here
    – user1822
    Mar 23, 2021 at 12:08

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