use jq to format json data into csv data - json

Question

{
"Users": [
{
"Attributes": [
{
"Name": "sub",
"Value": "1"
},
{
"Name": "phone_number",
"Value": "1234"
},
{
"Name": "referral_code",
"Value": "abc"
}
]
},
{
"Attributes": [
{
"Name": "sub",
"Value": "2"
},
{
"Name": "phone_number",
"Value": "5678"
},
{
"Name": "referral_code",
"Value": "def"
}
]
}
]
}
How can I produce output like below ?
1,1234,abc
2,5678,def
jq '.Users[] .Attributes[] .Value' test.json
produces
1
1234
abc
2
5678
def

Answer 1

Not sure this is the cleanest way to handle this, but the following will get the desired output:
.Users[].Attributes | map(.Value) | #csv
Loop through all the deep Attributes .Users[].Attributes
map() to get all the Value's
Convert to #csv
jqPlay demo

Answer 2

If you don't need the output to be guaranteed to be CSV, and if you're sure the "Name" values are presented in the same order, you could go with:
.Users[].Attributes
| from_entries
| [.[]]
| join(",")
To be safe though it would be better to ensure consistency of ordering:
(.Users[0] | [.Attributes[] | .Name]) as $keys
| .Users[]
| .Attributes
| from_entries
| [.[ $keys[] ]]
| join(",")
Using join(",") will produce the comma-separated values as shown in the Q (without the quotation marks), but is not guaranteed to produce the expected CSV for all valid values of the input. If you don't mind the pesky quotation marks, you could use #csv, or if you want to skip the quotation marks around all numeric values:
map(tonumber? // .) | #csv