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!endswith_cs operator

Filters a record set for data that does not contain a case-insensitive ending string.

The following table provides a comparison of the endswith operators:

Operator Description Case-Sensitive Example (yields true)
endswith RHS is a closing subsequence of LHS No "microsoftWindowsSource5" endswith "CE5"
!endswith RHS isn't a closing subsequence of LHS No "microsoftWindowsSource5" !endswith "micro"
endswith_cs RHS is a closing subsequence of LHS Yes "microsoftWindowsSource5" endswith_cs "ce5"
!endswith_cs RHS isn't a closing subsequence of LHS Yes "microsoftWindowsSource5" !endswith_cs "CE5"

The following abbreviations are used in the table above:

  • RHS = right hand side of the expression
  • LHS = left hand side of the expression

For further information about other operators and to determine which operator is most appropriate for your query, see datatype string operators.

Performance tips

Performance depends on the type of search and the structure of the data.

For faster results, use the case-sensitive version of an operator, for example, endswith_cs, not endswith.


T | where col !endswith_cs (expression)


  • T - The tabular input whose records are to be filtered.
  • col - The column to filter.
  • expression - Scalar or literal expression.


Rows in T for which the predicate is true.


    | project original_time, data_source_name, name
    //--- Search for the last 5 mins of data    
    | where original_time > now(-15m)
    //--- USER Criteria Here
    | where data_source_name !endswith_cs "Ce4"
    | take 2


original_time data_source_name name
2023-04-11T12:27:01.489Z microsoftWindowsSource4 Failure Audit: Privileged Object Operation Failed
2023-04-11T14:52:33.756Z microsoftWindowsSource4 Credential Manager Credentials Were Read