# Add Column in csv file logstash

**URL:** <https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853>\
**Category:** Logstash\
**Created:** [April 12, 2018, 4:52pm UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853 "2018-04-12T16:52:24Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![rouchad\_rouchad](https://avatars.discourse-cdn.com/v4/letter/r/4491bb/32.png) [@rouchad\_rouchad](https://discuss.elastic.co/u/rouchad_rouchad)\
**Post date:** [April 12, 2018, 4:52pm UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853/1 "2018-04-12T16:52:24Z")

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hello everyone , please i need ur help  
i want add new columns in my logstash config file but i don't how do it ??  
there is my config file :  
input {  
file {  
path =\> "C:\elk\logstash\data.csv"  
start\_position =\> "beginning"  
sincedb\_path =\> "/dev/null"  
}  
}  
filter {  
csv {  
separator =\> ","  
columns =\> ["maker","model","mileage","manufacture\_year","engine\_displacement","engine\_power","body\_type","color\_slug","stock\_year", "transmission","door\_count","seat\_count","fuel\_type","date\_created","date\_last\_seen","price\_euro",]  
add\_tag =\> ["country"]  
if [maker]=='ford'{[country]== 'USA'}  
if [maker]=='skoda'{[country]== 'Czech Republic'}  
if [maker]=='audi'{[country]== 'germany'}  
}

}  
output {  
elasticsearch {  
hosts =\> "[http://localhost:9200](http://localhost:9200)"  
index =\> "database"  
}  
stdout {}  
}

---

<div class="post-metadata">

**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [April 12, 2018, 5:15pm UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853/2 "2018-04-12T17:15:40Z")

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Remove the add\_tag. You could do this with a series of

```auto
if [maker]=='ford' { mutate { add_field => { "country" => 'USA' } } }

```

Or with one translate filter. In either case these would come after the csv filter, not inside it.

```auto
  translate {
    field => "maker"
    destination => "country"
    dictionary => [
      'ford', 'USA',
      'skoda', 'Czech Republic',
      'audi', 'germany'
    ]
  }

```

If your input varies in case then use a temporary field

```auto
  mutate { add_field => { "[@metadata][lowermaker]" => "%{maker}" } }
  mutate { lowercase => ["[@metadata][lowermaker]" ] }
  translate {
    field => "[@metadata][lowermaker]"
    [...]

```

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<div class="post-metadata">

**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\
**Post date:** [April 13, 2018, 6:20am UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853/3 "2018-04-13T06:20:24Z")

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> path =\> "C:\elk\logstash\data.csv"  
> start\_position =\> "beginning"  
> sincedb\_path =\> "/dev/null"

On Windows use "nul" instead of "/dev/null".

---

<div class="post-metadata">

**Author:** ![rouchad\_rouchad](https://avatars.discourse-cdn.com/v4/letter/r/4491bb/32.png) [@rouchad\_rouchad](https://discuss.elastic.co/u/rouchad_rouchad)\
**Post date:** [April 13, 2018, 9:02am UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853/4 "2018-04-13T09:02:27Z")

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thank you very much Mr Magnus :souriant:

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<div class="post-metadata">

**Author:** ![rouchad\_rouchad](https://avatars.discourse-cdn.com/v4/letter/r/4491bb/32.png) [@rouchad\_rouchad](https://discuss.elastic.co/u/rouchad_rouchad)\
**Post date:** [April 13, 2018, 9:07am UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853/5 "2018-04-13T09:07:48Z")

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Thank you very much Badger 😃

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [May 11, 2018, 9:07am UTC](https://discuss.elastic.co/t/add-column-in-csv-file-logstash/127853/6 "2018-05-11T09:07:54Z")

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