# String Functions

{% hint style="info" %}
PantherFlow is in open beta starting with Panther version 1.110, and is available to all customers. Please share any bug reports and feature requests with your Panther support team.
{% endhint %}

## `strings.cat()`

`strings.cat(str: string, str: string, ... ) -> string`

Concatenates strings.

**Example:**

```kusto
panther_logs.public.aws_alb
| project clientAddr=strings.cat(clientIp, ':', clientPort)
```

## `strings.contains()`

`strings.contains(str: any, substr: string) -> bool`

Returns true if `str` contains `substr`. If `str` is not a string, it is stringified first.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingMozilla=strings.contains(userAgent, "Mozilla")
```

## `strings.ends_with()`

`strings.ends_with(str: string, postfix: string) -> bool`

Returns true if `str` ends with `postfix`.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingSHA256=strings.ends_with(sslCipher, "SHA256")
```

## `strings.ilike()`

`strings.ilike(str: any, substr: string) -> bool`

Returns true if `str` contains `substr` with SQL LIKE semantics ignoring case.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingSHA=strings.ilike(sslCipher, "%sha%")
```

## `strings.join()`

`strings.join(elements: [string], sep: string) -> string`

Returns `elements` joined together with `sep` between each element.

**Example:**

```kusto
panther_logs.public.aws_alb
| project same=strings.join(strings.split(domainName, "."), ".")
```

## `strings.len()`

`strings.len(str: any) -> int`

Returns the length of `str`. If `str` is not a string, it is stringified first.

**Example:**

```kusto
panther_logs.public.aws_alb
| project keyLen=strings.len(p_source_file.aws_s3_key)
```

## `strings.like()`

`strings.like(str: any, substr: string) -> bool`

Returns true if `str` contains `substr` with SQL LIKE semantics.

**Example:**

```kusto
panther_logs.public.aws_alb
| project usingSHA=strings.like(sslCipher, "%SHA%")
```

## `strings.lower()`

`strings.lower(str: string) -> string`

Returns `str` converted to lower case.

**Example:**

```kusto
panther_logs.public.aws_alb
| project action=strings.cat(strings.lower(requestHttpMethod), " a letter")
```

## `strings.split()`

`strings.split(str: any, sep: string) -> [string]`

Returns a list of substrings of `str` separated by `sep`.

**Example:**

```kusto
panther_logs.public.aws_alb
| project ip_parts=strings.split(clientIp, ".")
```

## `strings.starts_with()`

`strings.starts_with(str: string, prefix: string) -> bool`

Returns true if `str` starts with `prefix`.

**Example:**

```kusto
panther_logs.public.aws_alb
| project targetingLoadBalancer=strings.starts_with(targetGroupArn, "arn:aws:elasticloadbalancing")
```

## `strings.upper()`

`strings.upper(str: string) -> string`

Returns `str` converted to upper case.

**Example:**

```kusto
panther_logs.public.aws_alb
| project bigDomain=strings.upper(domainName)
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.panther.com/pantherflow/functions/string.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.