How do you retrieve data in SQL that matches a pattern?

To retrieve data in SQL that matches a pattern, you can use the LIKE operator. Here are the steps:

1. First, you need to establish a connection to the database where your data is stored.

2. Once you're connected, you can use the SELECT statement to specify the data you want to retrieve.

3. In the WHERE clause of your SELECT statement, you can use the LIKE operator to specify the pattern you're looking for.

Here's an example:

SELECT column_name
FROM table_name
WHERE column_name LIKE 'pattern%';

In this example, 'pattern%' will match any record in column_name that starts with 'pattern'. The '%' is a wildcard character that matches any sequence of characters.

If you want to match a pattern anywhere within the data, not just at the start, you can use '%' on both sides of your pattern, like this:

SELECT column_name
FROM table_name
WHERE column_name LIKE '%pattern%';

This will match any record in column_name that contains 'pattern' anywhere in the string.