# Use \* in canvas essql

**URL:** <https://discuss.elastic.co/t/use-in-canvas-essql/210891>\
**Category:** Kibana\
**Tags:** elastic-stack-sql, canvas\
**Created:** [December 6, 2019, 12:47pm UTC](https://discuss.elastic.co/t/use-in-canvas-essql/210891 "2019-12-06T12:47:43Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![anon42972578](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@anon42972578](https://discuss.elastic.co/u/anon42972578)\
**Post date:** [December 6, 2019, 12:47pm UTC](https://discuss.elastic.co/t/use-in-canvas-essql/210891/1 "2019-12-06T12:47:43Z")

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Hello,

i have a little question for canvas.  
Here is my code:  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/a/bab4ad38389f74b62976a0f332df72aa74f67a33.png)

following line is important:  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/1/4/141ccbb85adb7566340877fda0fad756ed580778.png)  
How can I use \* in single quotes ?  
When i use **Chrome-Version-1** or **Chrome-Version-2** everything is working fine.  
Now I want to find every string that contains "Chrome-Version" ( **Chrome-Version-** \* is not working...)  
Can someone please help me ? 🙂

In visualizations i can just use the filter:

> User-Agent: Chrome-Version-\*

and it is working fine, how can i use it in canvas ?

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<div class="post-metadata">

**Author:** ![tylersmalley](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tylersmalley/32/8833_2.png) [@tylersmalley](https://discuss.elastic.co/u/tylersmalley)\
**Post date:** [December 6, 2019, 6:03pm UTC](https://discuss.elastic.co/t/use-in-canvas-essql/210891/2 "2019-12-06T18:03:09Z")

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Have you tried using double quote and escaping them?

`WHERE \"User-Agent\" = \"Chrome-Version-*\"`

Also, it would help if you posted the queries as a code block instead of images so they can be copy-pasted/searched. Thanks!

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<div class="post-metadata">

**Author:** ![anon42972578](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@anon42972578](https://discuss.elastic.co/u/anon42972578)\
**Post date:** [December 9, 2019, 7:51am UTC](https://discuss.elastic.co/t/use-in-canvas-essql/210891/3 "2019-12-09T07:51:04Z")

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yes i already tried:

> WHERE "User-Agent" = "Chrome-Version-\*"

--\> verification\_exception: Unknown colum [Chrome-Version-\*]

But as far as i know it should be or ? (field="" / value = '')

> WHERE "User-Agent" = 'Chrome-Version-\*'

--\> parse error

sorry for that. I tried to use Blockquote and preformatted text but it will end in a picture 😕  
EDIT: found out

here is my example:

> filters  
> | essql  
> query="SELECT COUNT(_) as count  
> FROM "my\_index-_"  
> WHERE "User-Agent" = 'Chrome-Version-\*'  
> AND "@timestamp" \> CURRENT\_TIMESTAMP - INTERVAL 1 HOUR"  
> | math "count"  
> | metric "SOME TEXT"  
> | render

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<div class="post-metadata">

**Author:** ![anon42972578](https://avatars.discourse-cdn.com/v4/letter/a/da6949/32.png) [@anon42972578](https://discuss.elastic.co/u/anon42972578)\
**Post date:** [December 10, 2019, 7:43am UTC](https://discuss.elastic.co/t/use-in-canvas-essql/210891/4 "2019-12-10T07:43:52Z")

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Finally i found out my solution:

> WHERE "User-Agent" LIKE 'Chrome-Version%'

Best regards

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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:** [January 7, 2020, 7:43am UTC](https://discuss.elastic.co/t/use-in-canvas-essql/210891/5 "2020-01-07T07:43:58Z")

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