# String Operations

## String Matching

The **like** keyword is used followed by:

* **%**: The character % matches any substring
* **\_**: The character *\_\\* matches any character

```
select name from instructor where name like '%kr%'
```

This will return Vi**kr**am as one of the results.

## Other Supported String Operations

* Concatenation using ||
* Converting from uppercase to lowercase and vice versa
* Finding string length
* Extracting substrings etc.


---

# 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://vikram-bajaj.gitbook.io/cs-gy-6083-principles-of-database-systems/main-1/sql/dml-commands/string-operations.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.