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# StartsWith

> Use the Sigma StartsWith function to determine whether a string starts with a specified substring.

Returns true if a string starts with a specified substring.

## Usage

`StartsWith(string, substring)`

**string** (required)- The string to search.

**substring** (required)- The substring to search with.

StartsWith is case-sensitive. To create a search that is not case-sensitive, combine EndsWith with [Lower](/docs/lower).

## Example

`StartsWith("Jane Doe", "Ja")`

* Returns TRUE

## Related resources

* [EndsWith](/docs/endswith)
* [Contains](/docs/contains)
* [Find](/docs/find)