Forum Discussion

marked-data's avatar
marked-data
Copper Contributor
Mar 18, 2019
Solved

split and regex in Kusco

Hi all,   I have a query in Kusto to return Details from Table which returns multiple rows of sentence text: Table | project Details Output: Starting cycle 20349 Starting scheduling for cycle ...
  • marked-data's avatar
    marked-data
    Mar 20, 2019

    Yoni 

     

    Hey Yoni,

     

    Thanks for the example. I did get what I needed by building off your example: This query takes the log lines, splits into words, screens out numbers. and summarizes the frequency of the word occurrence.

     

    Table // which has a column named "Details"| project KeyWords = split(Details, " ")
| mv-expand KeyWords 
| where KeyWords matches regex @"^[a-zA-Z]+$" 
| summarize count() by tostring(KeyWords)

     

Yoni's avatar
Yoni
Icon for Microsoft rankMicrosoft
Mar 18, 2019

here's an example for using "split()" (depending on your actual use case, operators/functions linked-to below may be relevant as well):

 

split() function: https://docs.microsoft.com/en-us/azure/kusto/query/splitfunction 

parse operator: https://docs.microsoft.com/en-us/azure/kusto/query/parseoperator

reduce operator: https://docs.microsoft.com/en-us/azure/kusto/query/reduceoperator

replace() function: https://docs.microsoft.com/en-us/azure/kusto/query/replacefunction (for removing numeric values you mentioned was part of your goal)

 

MyTable // which has a column named "Details"
| extend Details = split(MyColumn, " ") // This assumes the "words" are separated by a single space