Need help! - Unable to load JSON using COPY command - json

Question

Need your expertise here!
I am trying to load a JSON file (generated by JSON dumps) into redshift using copy command which is in the following format,
[
{
"cookieId": "cb2278",
"environment": "STAGE",
"errorMessages": [
"70460"
]
}
,
{
"cookieId": "cb2271",
"environment": "STG",
"errorMessages": [
"70460"
]
}
]
We ran into the error - "Invalid JSONPath format: Member is not an object."
when I tried to get rid of square braces - [] and remove the "," comma separator between JSON dicts then it loads perfectly fine.
{
"cookieId": "cb2278",
"environment": "STAGE",
"errorMessages": [
"70460"
]
}
{
"cookieId": "cb2271",
"environment": "STG",
"errorMessages": [
"70460"
]
}
But in reality most JSON files from API s have this formatting.
I could do string replace or reg ex to get rid of , and [] but I am wondering if there is a better way to load into redshift seamlessly with out modifying the file.

Answer 1

One way to convert a JSON array into a stream of the array's elements is to pipe the former into jq '.[]'. The output is sent to stdout.
If the JSON array is in a file named input.json, then the following command will produce a stream of the array's elements on stdout:
$ jq ".[]" input.json
If you want the output in jsonlines format, then use the -c switch (i.e. jq -c ......).
For more on jq, see https://stedolan.github.io/jq