How to convert string into double in KQL db

[Suerima]

I took data from eventstream and converted it to double to save KQL database, but it changed type dynamic, lakehouse changed type to double normally. I read the documentation it says support but I don't know why it hasn't changed.

- My event stream: 

- KQL databases

- In lakehouse

- Document

[v-junyant-msft]

Hi @Suerima ,

Can you please provide a link to this document you are looking at?

According to the official Microsoft documentation, there is no data type Double in KQL Query. You can refer to the following documentation:
https://learn.microsoft.com/en-us/azure/data-explorer/kusto/query/scalar-data-types/#supported-data-... 

Best Regards,
Dino Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Suerima]

Hi Dino Tao,

Thank you for your support. Here is the document link I mentioned:
Process event data with the event processor editor - Microsoft Fabric | Microsoft Learn

Kind Regards,

Suerima

[v-junyant-msft · Accepted solution]

Hi @Suerima ,

Just in the document you provide:

The rows represent the data types supported by KQL Database, but the table rows do not contain double types, so KQL does not support double types.

Best Regards,
Dino Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.