How to map an object to arrays so it can be converted to csv?

Question

I\'m trying to convert an object that looks like this:

{
  \"123\" : \"abc\",
  \"231\" : \"dbh\",
  \"452\" : \"xyz\"
}

To csv that looks

Answer 1

Try this filter:

to_entries[] | [.key, .value]

• to_entries converts an object to an array of key/value objects. [] breaks up the array to each of the items in the array
• then for each of the items, covert to an array containing the key and value.

This produces the following output:

[
  "123",
  "abc"
],
[
  "231",
  "dbh"
],
[
  "452",
  "xyz"
]

Then you can use the @csv filter to convert the rows to CSV rows.

$ echo '{"123":"abc","231":"dbh","452":"xyz"}' | jq -r 'to_entries[] | [.key, .value] | @csv'
"123","abc"
"231","dbh"
"452","xyz"

Answer 2

Jeff answer is a good starting point, something closer to what you expect:

cat input.json | jq 'to_entries | map([.key, .value]|join(","))'

[
 "123,abc",
 "231,dbh",
 "452,xyz"
]

But did not find a way to join using newline:

cat input.json | jq 'to_entries | map([.key, .value]|join(","))|join("\n")'

"123,abc\n231,dbh\n452,xyz"

Answer 3

Here's an example I ended up using this morning (processing PagerDuty alerts):

cat /tmp/summary.json | jq -r '
  .incidents
  | map({desc: .trigger_summary_data.description, id:.id})
  | group_by(.desc)
  | map(length as $len
  | {desc:.[0].desc, length: $len}) 
  | sort_by(.length) 
  | map([.desc, .length] | @csv)
  | join("\n") '

This dumps a CVS-separated document that looks something like: "[Triggered] Something annoyingly frequent",31 "[Triggered] Even more frequent alert!",35 "[No data] Stats Server is probably acting up",55

Answer 4

Try This give same output you want

echo '{"123":"abc","231":"dbh","452":"xyz"}' | jq -r 'to_entries | .[] | "\"" + .key + "\",\"" + (.value | tostring)+ "\""'

Answer 5

onecol2txt () {
 awk 'BEGIN { RS="_end_"; FS="\n"}
   { for (i=2; i <= NF; i++){
       printf "%s ",$i 
       }
     printf "\n" 
   }'
}
cat jsonfile | jq -r -c '....,"_end_"' | onecol2txt