contains_cs operator

Applies to: ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel

Filters a record set for data containing a case-sensitive string. contains_cs searches for arbitrary sub-strings rather than terms.

The following table compares the contains operators using the abbreviations provided:

  • RHS = right-hand side of the expression
  • LHS = left-hand side of the expression
Operator Description Case-Sensitive Example (yields true)
contains RHS occurs as a subsequence of LHS No "FabriKam" contains "BRik"
!contains RHS doesn't occur in LHS No "Fabrikam" !contains "xyz"
contains_cs RHS occurs as a subsequence of LHS Yes "FabriKam" contains_cs "Kam"
!contains_cs RHS doesn't occur in LHS Yes "Fabrikam" !contains_cs "Kam"

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

Performance tips

Note

Performance depends on the type of search and the structure of the data. For best practices, see Query best practices.

If you're looking for a term, use has_cs for faster results.

Syntax

T | where col contains_cs (string)

Learn more about syntax conventions.

Parameters

Name Type Required Description
T string ✔️ The tabular input whose records are to be filtered.
col string ✔️ The name of the column to check for string.
string string ✔️ The case-sensitive string by which to filter the data.

Returns

Rows in T for which string is in col.

Examples

The following example demonstrates how to use the contains_cs operator.

Run the query

StormEvents
| summarize event_count=count() by State
| where State contains_cs "AS"

Output

Count
8