# Selecting from single column in database table without column name

**URL:** <https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121>\
**Category:** Logstash\
**Created:** [December 11, 2017, 2:50pm UTC](https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121 "2017-12-11T14:50:43Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![johnjingle](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@johnjingle](https://discuss.elastic.co/u/johnjingle)\
**Post date:** [December 11, 2017, 2:50pm UTC](https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121/1 "2017-12-11T14:50:43Z")

</div>

I am a newbie.

Using Logstash to load data from a database.. The column jasondata contains a json string.

"SELECT jsondata FROM [test].[dbo].[employees]" and in ElasticSearch I get

jsondata:  
{"1":223,"firstName":"Standford","lastName":"Gytesham","email":"sgytesham66@phoca.cz","gender":"Male","language":"Ndebele","phone":"664-417-5923","university":"Universidad Mayor"},

where jsondata becomes a field in Elastic.  
Is it possible to not have the jsondata: ?

---

<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:** [December 12, 2017, 7:14am UTC](https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121/2 "2017-12-12T07:14:07Z")

</div>

You mean you want fields named `1`, `firstName`, `lastName` and so on instead of `jsondata`? Use a json filter to process the `jsondata` field.

---

<div class="post-metadata">

**Author:** ![johnjingle](https://avatars.discourse-cdn.com/v4/letter/j/87869e/32.png) [@johnjingle](https://discuss.elastic.co/u/johnjingle)\
**Post date:** [December 12, 2017, 10:45am UTC](https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121/3 "2017-12-12T10:45:02Z")

</div>

Thanks very much that solved it.

An addendum. When I load a row containing  
"  
cars": {"car1":"Ford","car2":"BMW","car3":"Fiat"}

it is fine.

When using

"cars":["Ford", "BMW", "Fiat"]

it ignores the row.

---

<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:** [December 12, 2017, 10:46am UTC](https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121/4 "2017-12-12T10:46:20Z")

</div>

Yes, because the `cars` field by then has been mapped as an object and then you can't store string data in it.

---

<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:** [January 9, 2018, 10:46am UTC](https://discuss.elastic.co/t/selecting-from-single-column-in-database-table-without-column-name/111121/5 "2018-01-09T10:46:25Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.